Special Functions ...................................................................................................................................................................J-3
Auto Restart ..........................................................................................................................................................................J-3
Forced Defrost ......................................................................................................................................................................J-3
Enhanced Defrost .................................................................................................................................................................J-3
Temperature Compensation ................................................................................................................................................J-4
Matching Tables .....................................................................................................................................................................J-6
Resistance Values ..................................................................................................................................................................J-8
Louver Motors .......................................................................................................................................................................J-8
EEV ........................................................................................................................................................................................J-8
Component Ratings ...............................................................................................................................................................J-9
4-Way Valve ..........................................................................................................................................................................J-9
Basepan Heater ....................................................................................................................................................................J-9
Reactor ..................................................................................................................................................................................J-9
Fan Motors ............................................................................................................................................................................J-9
Refrigeration Diagrams .......................................................................................................................................................J-10
Master Error Code Chart ......................................................................................................................................................J-12
Outdoor Unit Error Codes ....................................................................................................................................................J-16
Temperature Sensor Error Codes ......................................................................................................................................J-16
Pressure-Related Error Codes ...........................................................................................................................................J-17
Communication Error Code ...............................................................................................................................................J-17
Error Code Related to the PCB ...........................................................................................................................................J-18
Error Codes Related to the IPM ..........................................................................................................................................J-18
Flow Charts ..........................................................................................................................................................................J-20
[1] Outdoor EEPROM Malfunction .....................................................................................................................................J-20
[6] DC voltage or AC voltage high......................................................................................................................................J-21
[9] DC fan motor fault .........................................................................................................................................................J-22
[17] 4-way valve reversing failure ......................................................................................................................................J-24
[24] Compressor startup failure ........................................................................................................................................J-25
[42] Open high pressure switch .........................................................................................................................................J-26
[43] Open low pressure switch ...........................................................................................................................................J-26
TROUBLESHOOTING & REFERENCES
Table of Contents
TROUBLESHOOTING & REFERENCES
J-1