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FlextFit Series

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Flex Fit Single Zone

Flex Fit Multi Zone

Arctic Series

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Ceiling Cassette

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Easy Series

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FlexFit Highwall

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FlexFit Multi Outdoor

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FlexFit Single Outdoor

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Forward Series

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Novel Series

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Slim Duct

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YR-E16b Wired Controller

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YR-E17 Wired Controller

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Wireless Remote

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Highwall Error Codes

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E1

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Indoor ambient temp sensor fault

E2

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Indoor pipe temp sensor fault

E4

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Indoor PCB EEPROM fault

E5

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Indoor frozen / Indoor anti-frosting protection

E7

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Communication fault between indoor and outdoor unit

E9

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Indoor thermal overload / Indoor unit overload protection

E14

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Indoor motor feedback circuit fault

F1

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Outdoor IPM fault

F2

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Compressor start failure

F3

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Communication fault between outdoor PCB and power module

F4

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Compressor Exhaust temp overtop protection

F5

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Module thermal overload

F6

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Outdoor Ambient sensor fault

F7

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Outdoor Suction sensor fault

F8

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Outdoor DC fan motor fault

F9

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MCU reset

F10

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Malfunction of liquid pipe temp. sensor for indoor unit A

F11

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Loss of synchronism detection (compressor)

F12

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Outdoor PCB EEPROM fault

F13

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Lack of refrigerant or discharging

F14

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Four-way-valve couldn't shift normally

F15

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Terminal block temp too high

F16

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Malfunction of liquid pipe temp. sensor for indoor unit B

F17

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Malfunction of liquid pipe temp. sensor for indoor unit C

F18

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Malfunction of liquid pipe temp. sensor for indoor unit D

F19

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Unreliable utility power input

F20

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Compressor overload protection

F21

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Outdoor Defrost sensor fault

F22

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Outdoor Alternating current over current protection

F23

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Module input overcurrent

F24

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Module current detect circuit malfunction

F25

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Outdoor Exhaust sensor fault

F26

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Malfunction of gas pipe temp. sensor for indoor unit E

F27

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Compressor blocked or instantaneous stop

F28

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Position detection circuit fault of compressor

F29

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Malfunction of gas pipe temp. sensor for indoor unit A

F30

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Outdoor Suction temp overtop / Malfunction of gas pipe temp. sensor for indoor unit B

F31

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Malfunction of gas pipe temp. sensor for indoor unit C

F32

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Malfunction of gas pipe temp. sensor for indoor unit D

F33

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Malfunction of liquid pipe temp. sensor for indoor unit E

F34

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Outdoor pipe temp protection in cooling mode

F35

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Malfunction of module temp.sensor / Momentary power failure detection

F36

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Malfunction of condensing temp. sensor

F38

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Malfunction of Toci temp. sensor

F39

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System high pressure switch off

F40

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System low pressure switch off

F41

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System high pressure protection / Refrigerant overabundance / High condensing temp. / malfunction of fan motor.

F42

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System low pressure protection / Refrigerant shortage / Low defrosting temp. / malfunction of fan motor.

F43

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Wrong match between indoor unit and outdoor unit

Single Zone FlexFit Outdoor

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1 LED Flash

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Outdoor PCB EEPROM fault

2 LED Flashes

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Outdoor IPM fault

3 LED Flashes

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Outdoor Alternating current over current protection

4 LED Flashes

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Communication fault between outdoor PCB and power module

5 LED Flashes

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Compressor overload protection

6 LED Flashes

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Unreliable utility power input

7 LED Flashes

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Compressor blocked or instantaneous stop

8 LED Flashes

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Compressor Exhaust temp overtop protection

9 LED Flashes

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Outdoor DC fan motor fault

10 LED Flashes

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Outdoor Defrost sensor fault

11 LED Flashes

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Outdoor Suction sensor fault

12 LED Flashes

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Outdoor Ambient sensor fault

13 LED Flashes

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Outdoor Exhaust sensor fault

14 LED Flashes

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Outdoor Suction temp overtop

15 LED Flashes

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Communication fault between indoor and outdoor unit

16 LED Flashes

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Lack of refrigerant or discharging

17 LED Flashes

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Four-way-valve couldn't shift normally

18 LED Flashes

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Loss of synchronism detection (compressor)

19 LED Flashes

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Position detection circuit fault of compressor

20 LED Flashes

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Terminal block temp too high

21 LED Flashes

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Indoor unit overload protection

22 LED Flashes

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Indoor anti-frosting protection

24 LED Flashes

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Compressor start failure

25 LED Flashes

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Module input overcurrent

37 LED Flashes

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Outdoor pipe temp protection in cooling mode

46 LED Flashes

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Wrong match between indoor unit and outdoor unit

Multi Zone FlexFit Outdoor

Back Home

LED Disp. 1

Back Home

Outdoor PCB EEPROM fault

LED Disp. 2

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Outdoor IPM fault

LED Disp. 4

Back Home

Communication fault between outdoor PCB and power module

LED Disp. 5

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Compressor overload protection

LED Disp. 6

Back Home

Unreliable utility power input

LED Disp. 8

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Compressor Exhaust temp overtop protection

LED Disp. 9

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Outdoor DC fan motor fault

LED Disp. 10

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Outdoor Defrost sensor fault

LED Disp. 11

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Outdoor Suction sensor fault

LED Disp. 12

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Outdoor Ambient sensor fault

LED Disp. 13

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Outdoor Exhaust sensor fault

LED Disp. 15

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Communication fault between indoor and outdoor unit

LED Disp. 16

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Lack of refrigerant or discharging

LED Disp. 17

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Four-way-valve couldn't shift normally

LED Disp. 18

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Loss of synchronism detection (compressor)

LED Disp. 20

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Indoor thermal overload

LED Disp. 21

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Indoor frosted

LED Disp. 23

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Module thermal overload

LED Disp. 24

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Compressor start failure

LED Disp. 25

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Module input overcurrent

LED Disp. 26

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MCU reset

LED Disp. 27

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Module current detect circuit malfunction

LED Disp. 28

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Malfunction of liquid pipe temp. sensor for indoor unit A

LED Disp. 29

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Malfunction of liquid pipe temp. sensor for indoor unit B

LED Disp. 30

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Malfunction of liquid pipe temp. sensor for indoor unit C

LED Disp. 31

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Malfunction of liquid pipe temp. sensor for indoor unit D

LED Disp. 32

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Malfunction of gas pipe temp. sensor for indoor unit A

LED Disp. 33

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Malfunction of gas pipe temp. sensor for indoor unit B

LED Disp. 34

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Malfunction of gas pipe temp. sensor for indoor unit C

LED Disp. 35

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Malfunction of gas pipe temp. sensor for indoor unit D

LED Disp. 36

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Malfunction of gas pipe temp. sensor for indoor unit E

LED Disp. 38

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Malfunction of module temp.sensor Momentary power failure detection

LED Disp. 39

Back Home

Malfunction of condensing temp. sensor

LED Disp. 40

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Malfunction of liquid pipe temp. sensor for indoor unit E

LED Disp. 41

Back Home

Malfunction of ‘Toci’temp. sensor

LED Disp. 42

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System high pressure switch off

LED Disp. 43

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System low pressure switch off

LED Disp. 44

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System high pressure protection.Refrigerant overabundance, High condensing temp. or malfunction of fan motor.

LED Disp. 45

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System low pressure protection.Refrigerant shortage, Low defrosting temp., or malfunction of fan motor.

Single and 2 Zone Multi 2U18 FlexFit Outdoor

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LED Disp. 1

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Outdoor PCB EEPROM fault

LED Disp. 2

Back Home

Outdoor IPM fault

LED Disp. 3

Back Home

Outdoor Alternating current over current protection / Outdoor current protection

LED Disp. 4

Back Home

Communication fault between outdoor PCB and power module

LED Disp. 5

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Compressor overload protection

LED Disp. 6

Back Home

Unstable utility power input

LED Disp. 7

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Compressor blocked or instantaneous stop

LED Disp. 8

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Compressor Exhaust temp overtop protection

LED Disp. 9

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Outdoor DC fan motor fault

LED Disp. 10

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Outdoor Defrost sensor fault

LED Disp. 11

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Outdoor Suction sensor fault

LED Disp. 12

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Outdoor Ambient sensor fault

LED Disp. 13

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Outdoor Exhaust sensor fault

LED Disp. 14

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Outdoor Suction temp overtop

LED Disp. 15

Back Home

Communication fault between indoor and outdoor unit

LED Disp. 16

Back Home

Lack of refrigerant or discharging / Low refrigerant

LED Disp. 17

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Four-way-valve couldn't shift normally / failure

LED Disp. 18

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Loss of synchronism detection (compressor)

LED Disp. 19

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Position detection circuit fault of compressor

LED Disp. 20

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Terminal block temp too high

LED Disp. 21

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Indoor unit overload protection

LED Disp. 22

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Indoor anti-frosting protection

LED Disp. 24

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Compressor start failure

LED Disp. 25

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Module input voltage overcurrent

LED Disp. 37

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Outdoor pipe temp protection in cooling mode

LED Disp. 46

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Wrong match between indoor unit and outdoor unit

Cassette Error Codes

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2Y/1G

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Outdoor PCB EEPROM fault

2Y/2G

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Outdoor IPM fault

2Y/3G

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Outdoor Alternating current over current protection

2Y/4G

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Communication fault between outdoor PCB and power module

2Y/5G

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Compressor overload protection

2Y/6G

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Unreliable utility power input

2Y/7G

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Compressor blocked or instantaneous stop

2Y/8G

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Compressor Exhaust temp overtop protection

2Y/9G

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Outdoor DC fan motor fault

3Y/0G

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Outdoor Defrost sensor fault

3Y/1G

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Outdoor Suction sensor fault

3Y/2G

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Outdoor Ambient sensor fault

3Y/3G

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Outdoor Exhaust sensor fault

3Y/4G

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Outdoor Suction temp overtop

3Y/5G

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Communication fault between indoor and outdoor unit

3Y/6G

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Lack of refrigerant or discharging

3Y/7G

Back Home

Four-way-valve couldn't shift normally

3Y/8G

Back Home

Loss of synchronism detection (compressor)

3Y/9G

Back Home

Position detection circuit fault of compressor

4Y/0G

Back Home

Terminal block temp too high or
Indoor thermal overload

4Y/1G

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Indoor unit overload protection or
Indoor frosted

4Y/2G

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Indoor anti-frosting protection

4Y/3G

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Module thermal overload

4Y/4G

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Compressor start failure

4Y/5G

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Module input overcurrent

4Y/6G

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MCU reset

4Y/7G

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Module current detect circuit malfunction

4Y/8G

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Malfunction of liquid pipe temp. sensor for indoor unit A

4Y/9G

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Malfunction of liquid pipe temp. sensor for indoor unit B

5Y/0G

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Malfunction of liquid pipe temp. sensor for indoor unit C

5Y/1G

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Malfunction of liquid pipe temp. sensor for indoor unit D

5Y/2G

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Malfunction of gas pipe temp. sensor for indoor unit A

5Y/3G

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Malfunction of gas pipe temp. sensor for indoor unit B

5Y/4G

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Malfunction of gas pipe temp. sensor for indoor unit C

5Y/5G

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Malfunction of gas pipe temp. sensor for indoor unit D

5Y/6G

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Malfunction of gas pipe temp. sensor for indoor unit E

5Y/7G

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Outdoor pipe temp protection in cooling mode

5Y/8G

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Malfunction of module temp.sensor / Momentary power failure detection

5Y/9G

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Malfunction of condensing temp. sensor

6Y/0G

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Malfunction of liquid pipe temp. sensor for indoor unit E

6Y/1G

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Malfunction of ‘Toci’temp. sensor

6Y/2G

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System high pressure switch off

6Y/3G

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System low pressure switch off

6Y/4G

Back Home

System high pressure protection.Refrigerant overabundance / High condensing temp. or malfunction of fan motor.

6Y/5G

Back Home

System low pressure protection.Refrigerant shortage / Low defrosting temp., or malfunction of fan motor.

6Y/6G

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Wrong match between indoor unit and outdoor unit

Wired Hex Disp.

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15

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Outdoor PCB EEPROM fault

16

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Outdoor IPM fault

17

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Outdoor Alternating current over current protection

18

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Communication fault between outdoor PCB and power module

19

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Compressor overload protection

1A

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Unreliable utility power input

1B

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Compressor blocked or instantaneous stop

1C

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Compressor Exhaust temp overtop protection

1D

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Outdoor DC fan motor fault

1E

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Outdoor Defrost sensor fault

1F

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Outdoor Suction sensor fault

20

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Outdoor Ambient sensor fault

21

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Outdoor Exhaust sensor fault

22

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Outdoor Suction temp overtop

23

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Communication fault between indoor and outdoor unit

24

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Lack of refrigerant or discharging

25

Back Home

Four-way-valve couldn't shift normally

26

Back Home

Loss of synchronism detection (compressor)

27

Back Home

Position detection circuit fault of compressor

28

Back Home

Terminal block temp too high


Indoor thermal overload

29

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Indoor unit overload protection


Indoor frosted

2A

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Indoor anti-frosting protection

2B

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Module thermal overload

2C

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Compressor start failure

2D

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Module input overcurrent

2E

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MCU reset

2F

Back Home

Module current detect circuit malfunction

30

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit A

31

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Malfunction of liquid pipe temp. sensor for indoor unit B

32

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit C

33

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit D

34

Back Home

Malfunction of gas pipe temp. sensor for indoor unit A

35

Back Home

Malfunction of gas pipe temp. sensor for indoor unit B

36

Back Home

Malfunction of gas pipe temp. sensor for indoor unit C

37

Back Home

Malfunction of gas pipe temp. sensor for indoor unit D

38

Back Home

Malfunction of gas pipe temp. sensor for indoor unit E

39

Back Home

Outdoor pipe temp protection in cooling mode

3A

Back Home

Malfunction of module temp.sensor / Momentary power failure detection

3B

Back Home

Malfunction of condensing temp. sensor

3C

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit E

3D

Back Home

Malfunction of ‘Toci’temp. sensor

3E

Back Home

System high pressure switch off

3F

Back Home

System low pressure switch off

40

Back Home

System high pressure protection.Refrigerant overabundance / High condensing temp. or malfunction of fan motor.

41

Back Home

System low pressure protection.Refrigerant shortage / Low defrosting temp., or malfunction of fan motor.

42

Back Home

Wrong match between indoor unit and outdoor unit

Common Errors

Back Home

E1

Back Home

Indoor pipe temp sensor fault

Is the sensor properly plugged onto board?

Yes No

View as PDF

E1

Back Home

Indoor pipe temp sensor fault

Unplug sensor. Is it reading properly? 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

E1

Back Home

Indoor pipe temp sensor fault

Are the pins on the board and the sensor connector free of corrosion or defect?

Yes Back No

E1

Back Home

Indoor pipe temp sensor fault

Replace board.

Back

E1

Back Home

Indoor pipe temp sensor fault

Fix connection.

Back

E1

Back Home

Indoor pipe temp sensor fault

Replace sensor.

Back

E1

Back Home

Indoor pipe temp sensor fault

Rehab the connector if possible. Replace sensor and/or board if needed.

Back

E5

Back Home

Frosted indoor coil

Is the indoor coil sensor in place?

Yes No

View as PDF

E5

Back Home

Frosted indoor coil

Is the coil sensor reading properly? Unplug off board. 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

E5

Back Home

Frosted indoor coil

Is air flowing properly? If unit is ducted is the duct designed per design spec?

Yes Back No

E5

Back Home

Frosted indoor coil

Does the system have a refrigerant leak?

Yes Back No

E5

Back Home

Frosted indoor coil

Repair and recharge system.

Back

E5

Back Home

Frosted indoor coil

Adjust or replace EEV coil.

Back

E5

Back Home

Frosted indoor coil

Is the unit oversized for the room?

Yes Back No

E5

Back Home

Frosted indoor coil

Downsize unit.

Back

E5

Back Home

Frosted indoor coil

Fix placement.

Back

E5

Back Home

Frosted indoor coil

Replace sensor.

Back

E5

Back Home

Frosted indoor coil

Unblock or adjust air flow.

Back

E5

Back Home

Frosted indoor coil

Is EEV coil out of position or have an open coil? Read 46Ω Red->Violet Red->Yellow Red->Orange Red->Blue

Yes Back No

E5

Back Home

Frosted indoor coil

Is indoor ambient air sensor reading properly? 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

E5

Back Home

Frosted indoor coil

Replace ambient sensor.

Back

E5

Back Home

Frosted indoor coil

Replace indoor PCB.

Back

E7

Back Home

Communication failure.

The connecting wiring between the outdoor and indoor units should be 14-4 (14 gauge 4 conductor) SOOW cable. It is recommended that the wire connections be made with spade terminals. If spade terminals are not used then the wires should not be twisted prior to connecting to the screw terminals. All strands of the wires need to be tightened to the terminal with no fraying. The cable should be secured with the strain relief clamp.

Next

View as PDF

E7

Back Home

Communication failure.

Disconnect power to outdoor unit for 10 minutes. Does issue return after 3 minutes?

Yes Back No

E7

Back Home

Communication failure.

Is the LED on the outdoor PCB flashing?

Yes Back No

E7

Back Home

Communication failure.

Is the LED on the indoor PCB flashing?

Yes Back No

E7

Back Home

Communication failure.

Check wires and wire connections.

Back

E7

Back Home

Communication failure.

Check wires and wire connections.

Back

E7

Back Home

Communication failure.

Replace outdoor PCB

Back

E7

Back Home

Communication failure.

Replace outdoor PCB

Back

F3

Back Home

Outdoor internal communication error

This error occurs when the outdoor PCB looses communication with the Inverter Power module (IPM).

Next

View as PDF

F3

Back Home

Outdoor internal communication error

Is the communication wire connected properly onto CN11 on IPM board and CN24 on PCB?

Yes Back No

F3

Back Home

Outdoor internal communication error

Is the low volt wire connected properly onto CN10 on IPM board and CN23 on PCB?

Yes Back No

F3

Back Home

Outdoor internal communication error

Unplug CN10 on IPM. Is there 5VDC on wires at pins 1-2 and 15VDC on wires at pins 2-3?

Yes Back No

F3

Back Home

Outdoor internal communication error

Replace IPM.

Back

F3

Back Home

Outdoor internal communication error

Fix connection.

Back

F3

Back Home

Outdoor internal communication error

Fix connection.

Back

F3

Back Home

Outdoor internal communication error

Replace PCB

Back

F5

Back Home

Inverter power module (IPM) over current

Is supply voltage correct? Are the wire connections to IPM and compressor correct per wire diagram? Is the insulation of the wires good?

Yes No

View as PDF

F5

Back Home

Inverter power module (IPM) over current

Are the compressor windings shorted/grounded?

Yes Back No

F5

Back Home

Inverter power module (IPM) over current

Replace compressor.

Back

F5

Back Home

Inverter power module (IPM) over current

Correct the wiring.

Back

F5

Back Home

Inverter power module (IPM) over current

Replace IPM.

Back

F7

Back Home

Outdoor Suction Sensor Fault

Is the sensor properly plugged onto board?

Yes No

View as PDF

F7

Back Home

Outdoor Suction Sensor Fault

Unplug sensor. Is it reading properly? 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

F7

Back Home

Outdoor Suction Sensor Fault

Are the pins on the board and the sensor connector free of corrosion or defect?

Yes Back No

F7

Back Home

Outdoor Suction Sensor Fault

Replace board.

Back

F7

Back Home

Outdoor Suction Sensor Fault

Fix connection.

Back

F7

Back Home

Outdoor Suction Sensor Fault

Replace sensor.

Back

F7

Back Home

Outdoor Suction Sensor Fault

Rehab the connector if possible. Replace sensor and/or board if needed.

Back

F8

Back Home

Outdoor Fan Motor Fault

Power off the unit and gain access to outdoor PCB. Locate the fan motor wires on board, don’t unplug. Use meter to check for voltage.

Ok

View as PDF

F8

Back Home

Outdoor Fan Motor Fault

Are the following volts present when power is turned on? Black to Red ~ 300VDC Black to White ~ 15VDC

Yes Back No

F8

Back Home

Outdoor Fan Motor Fault

After about 3 minutes, volts here? Black to Yellow ~ 1-4VDC

Yes Back No

F8

Back Home

Outdoor Fan Motor Fault

Is the fan running?

Yes Back No

F8

Back Home

Outdoor Fan Motor Fault

Volts here? Black to Blue ~ 8VAC

Yes Back No

F8

Back Home

Outdoor Fan Motor Fault

Replace PCB

Back

F8

Back Home

Outdoor Fan Motor Fault

Replace PCB

Back

F8

Back Home

Outdoor Fan Motor Fault

Replace PCB

Back

F8

Back Home

Outdoor Fan Motor Fault

Replace fan motor

Back

F8

Back Home

Outdoor Fan Motor Fault

Replace fan motor

Back

F11

Back Home

Loss of Compressor Synchronization

Locate and note the wire colors on the U,V,W terminals of the Inverter Board. 3U24/4U36: U–Red V–White W–Black. Single zone units: U–Black V–White W–Red

Ok

View as PDF

F11

Back Home

Loss of Compressor Synchronization

Are the wires on the correct terminals?

Yes Back No

F11

Back Home

Loss of Compressor Synchronization

Unplug wires off board. Do all 3 wires ohm properly? Red & White = Red & Black = Black & White?

Yes Back No

F11

Back Home

Loss of Compressor Synchronization

Does each wire ohm open to ground?

Yes Back No

F11

Back Home

Loss of Compressor Synchronization

Call Tech Line 866-814-3633 option 3

Back

F11

Back Home

Loss of Compressor Synchronization

Fix according to above note.

Back

F11

Back Home

Loss of Compressor Synchronization

Replace compressor

Back

F11

Back Home

Loss of Compressor Synchronization

Replace compressor

Back

F12

Back Home

Outdoor EEPROM failure

Disconnect power, wait 10 minutes and power back on. Does error return?

Yes No

View as PDF

F12

Back Home

Outdoor EEPROM failure

Replace outdoor main board.

Back

F12

Back Home

Outdoor EEPROM failure

Take no further action.

Back

F13

Back Home

Lack of Refrigerant

Error in heat or cool?

Heat Cool

View as PDF

F13

Back Home

Lack of Refrigerant

Is compressor amp draw between 0.6-1.6 Amps when both of the following is correct? *ID coil temp minus ID ambient ≤41°F *Both ID & OD ambient temps are between 44~73°F

Yes Back No

F13

Back Home

Lack of Refrigerant

Is compressor amp draw between 0.6-1.6 Amps when both of the following is correct? *ID ambient minus ID coil temp ≤39°F *Both ID & OD ambient temps ≥77°F

Yes Back No

F13

Back Home

Lack of Refrigerant

Find and repair leak

Back

F13

Back Home

Lack of Refrigerant

Unplug each sensor. Is it reading properly? 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

F13

Back Home

Lack of Refrigerant

Replace sensor.

Back

F13

Back Home

Lack of Refrigerant

Are the pins on the board and the sensor connector free of corrosion or defect?

Yes Back No

F13

Back Home

Lack of Refrigerant

Replace board.

Back

F13

Back Home

Lack of Refrigerant

Rehab the connector if possible. Replace sensor and/or board if needed.

Back

F39

Back Home

Open High Pressure Switch

Is high pressure switch connected to main board

Yes No

View as PDF

F39

Back Home

Open High Pressure Switch

Unplug connector. Is pressure switch open?

Yes Back No

F39

Back Home

Open High Pressure Switch

Is system pressure higher than switch open limit?

Yes Back No

F39

Back Home

Open High Pressure Switch

Are the indoor coils heating/cooling?

Yes Back No

F39

Back Home

Open High Pressure Switch

Is the outdoor unit installed too close to walls or are the coils blocked?

Yes Back No

F39

Back Home

Open High Pressure Switch

Replace EEV coil.

Back

F39

Back Home

Open High Pressure Switch

Is the outdoor unit installed too close to walls or are the coils blocked?

Yes Back No

F39

Back Home

Open High Pressure Switch

Fix install or clean coil.

Back

F39

Back Home

Open High Pressure Switch

Reconnect.

Back

F39

Back Home

Open High Pressure Switch

Replace PCB.

Back

F39

Back Home

Open High Pressure Switch

Replace limit switch.

Back

F39

Back Home

Open High Pressure Switch

Replace limit switch.

Back

F39

Back Home

Open High Pressure Switch

Is EEV coil out of position or have an open coil? Read 46Ω Red->Violet Red->Yellow Red->Orange Red->Blue

Yes Back No

F39

Back Home

Open High Pressure Switch

Replace PCB.

Back

F39

Back Home

Open High Pressure Switch

Unit is overcharged. Recover and recharge system.

Back

F40

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Open Low Pressure Switch

Is low pressure switch connected to main board

Yes No

View as PDF

F40

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Open Low Pressure Switch

Unplug connector. Is pressure switch open?

Yes Back No

F40

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Open Low Pressure Switch

Is system pressure lower than switch open limit?

Yes Back No

F40

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Open Low Pressure Switch

Are the indoor coils heating/cooling?

Yes Back No

F40

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Open Low Pressure Switch

Unit is low on refrigerant. Check for leaks. Weigh out current charge, fix and recharge system.

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F40

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Open Low Pressure Switch

Replace EEV coil.

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F40

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Open Low Pressure Switch

Reconnect.

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F40

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Open Low Pressure Switch

Replace PCB.

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F40

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Open Low Pressure Switch

Replace limit switch.

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F40

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Open Low Pressure Switch

Replace limit switch.

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F40

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Open Low Pressure Switch

Is EEV coil out of position or have an open coil? Read 46Ω Red->Violet Red->Yellow Red->Orange Red->Blue

Yes Back No

F40

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Open Low Pressure Switch

Replace PCB.

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F40

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Open Low Pressure Switch

Recover and recharge system.

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Haier Ductless

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Multi Zone Calc

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Factory Charge: -oz.

The amount of refrigerant in the system from the factory.


Add to Factory Charge: -oz.

Amount of charge to add to the factory amount.


Add oz per ft: -oz.
The amount of refrigerant to be added/removed.

Total oz. Required: -oz.

Total amount of refrigerant needed in the system. Based off the total length of the system.



Length A:

Length of lineset on circuit A.

Length B:

Length of lineset on circuit B.

Length C:

Length of lineset on circuit C.

Length D:

Length of lineset on circuit D.

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-

Total ft. of Lineset: -ft.

Combined length of each circuit. (A+B+C+D=Total)


Max Length: -ft.

The maximum length the lineset can be.


Max Length Before Adding: -ft.

The longest length of lineset before having to add refrigerant to the factory charge.


Max Length Single Circuit: -ft.

The longest length of lineset before having to add refrigerant to the factory charge.


Max Lift: -ft.

The maximum lift allowed between the outdoor unit and COMBINED indoor units is XX feet total of all installed units. For example, 3 units with 15 elevation each is 45 feet.


Single Zone Calc

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Factory Charge: -oz.

The amount of refrigerant in the system from the factory.


Add to Factory Charge: -oz.

Amount of charge to add to the factory amount.


Add oz per ft: -oz.

The amount of refrigerant to be added/removed.


Total oz. Required: -oz.

Total amount of refrigerant needed in the system. Based off the total length of the system.



Total Length:

Total length of lineset.

-

Total ft. of Lineset: -ft.

Total length of lineset.


Max Length: -ft.

The maximum length the lineset can be.


Max Length Before Adding: -ft.

The longest length of lineset before having to add refrigerant to the factory charge.


Videos

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Wall Mount

Cassette

Slim Duct

Outdoor Unit

FAQ

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1) Q: How do I change the display to read Fahrenheit? (It currently displays Celsius).

A: Locate the “Extra Function” and “Confirm/Cancel” buttons on the wireless remote. Press the “Power” button to turn the wireless remote “On”. While viewing the LCD display on the wireless remote, tap the “Extra Function” button multiple times until the temperature is displayed in °F. Immediately press the “Confirm/Cancel” button to lock in the selection. (The “Confirm/Cancel” button must be pressed within 5 seconds of reaching the desired selection; otherwise the remote will revert back to the previous setting).

2) Q: The temperature displayed on the wall unit shows a higher temperature than what my thermometer on the table does, why?

A: The unit is mounted high on the wall where air in the room is normally at a higher temperature, therefore, the reading will be higher.

3) Q: The indoor fan operates all the time when the system is in cool mode.

A: This is a normal operating condition. The indoor fan needs to be operating to draw air across the indoor unit sensor to determine the temperature of the room for cycling the outdoor unit on and off.

4) Q: How do I make the system operate in Fan mode?

A: Locate the “Extra Function” and “Confirm/Cancel” buttons on the wireless remote. Press the “Power” button to turn the wireless remote “On”. While viewing the LCD display on the wireless remote, tap the “Extra Function” button multiple times until the “Fan” icon is displayed. Immediately press the “Confirm/Cancel” button to lock in the selection. (The “Confirm/Cancel” button must be pressed within five seconds of reaching the desired selection; otherwise the remote will revert back to the previous setting). The system will now operate in “Fan” Mode.

5) Q: Is there a humidity percentage setting for Dry mode?

A: No. In Dry mode, the system will continually run at a reduced cooling speed to remove humidity without substantial cooling. It does not monitor humidity levels.

6) Q: On a multi-split system, can one indoor unit operate in Cool mode at the same time another indoor unit is operating in Heat mode, or vice versa?

A: No, the outdoor unit can provide only one mode of operation at a time. The first unit to turn on sets the mode the outdoor unit will operate at.

7) Q: What does the “Health” button on the remote do?

A: This feature is not applicable on systems sold in North America.

8) Q: There is an icon displayed on the indoor unit in the shape of Christmas tree, what does that indicate?

A: The icon indicates the “Health” button has been pressed. Press the “Health” button one time to turn the icon off. This function is not applicable on systems sold in North America.

9) Q: The wall unit display turns off after making a selection with the remote controller.

A: Press the “light” button on the remote control to return the wall unit display to being constantly lit. The “light” button feature is used to turn the wall unit display on and off. Most often used where the unit is installed in a bedroom area where a lit indicator may disturb sleep.

10) Q: Can the system be operated if I cannot find the remote controller?

A: Yes. Press the Emergency Run button with a non-metallic pen or pencil. It is in an opening underneath the unit cover on the right side of the cabinet. After the beep, the unit will maintain 75° until the remote is located. Refer to the owner’s manual for operation of this feature.

Efficiency Calculator

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Unit Information

SEER:

SEER rating of unit.

BTUH Capacity Cooling:

Cooling capacity of the unit for cooling in BTUH.

HSPF:

HSPF rating of unit.

BTUH Capacity Heating:

Cooling capacity of the unit for heating in BTUH.

kWH Cost:

kWH cost in cents.

Cost per year in cooling:

$

Cost per year in heating:

$


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