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Troubleshooting
TROUBLESHOOTING
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Error Codes
Error
Code
Description
53 Communication failure from outdoor unit to indoor unit
60 Outdoor unit printed circuit board (PCB) EEPROM check sum error
61 Outdoor unit condenser coil temperature is too high
62 Outdoor unit inverter compressor PCB heat sink temperature is too high
63 Condenser coil pipe thermistor temperature is too low
65 Heat sink thermistor has disconnected or has shorted out
67 Outdoor brushless direct current (BLDC) fan motor lock error
Table 21: Table 32: Single Zone Wall Mounted Indoor Unit Error Codes - Continued
Troubleshooting Using Error Codes - Continued
Single Zone Wall Mounted Outdoor Unit Error Codes
The Single Zone Wall Mounted outdoor unit error codes below are visible on the outdoor unit. When troubleshooting the system, be sure to
verify if the error codes that are being displayed are specific for indoor or outdoor units.
Table 22: Single Zone Wall Mounted Outdoor Unit Error Codes
Error
Code
Description
No. of Times Outdoor Unit
LEDs Blink
LED1
(Plasma LED)
LED2
(Power LED)
21 DC Peak (IPM Fault); Compressor DC voltage was too high
2X 1X
22 Current Transformer2 (CT2) error; Alternating current (AC) input too high 2X 2X
23 DC Link Low Volt 2X 3X
25 AC Low/High Volt 2X 5X
26 DC Comp Position Error (not providing rotation), Locking 2X 6X
27
PSC Fault; Current to inverter compressor between AC and DC converter circuit
too high
2X 7X
28 Inverter compressor DC voltage is too high 2X 8X
29 Inverter compressor amperage is too high 2X 9X
31 Current-to-current transformer (CT) thermistor is too low 3X 1X
32 Inverter Compressor Discharge Pipe (D-Pipe) Overheat 3X 2X
40 CT Sensor Error; Thermistor is disconnected or is shorted out 4X -
41 D-Pipe Sensor INV is disconnected or shorted out 4X 1X
44 Outdoor Air Sensor is disconnected or shorted out 4X 4X
45 Middle thermistor of outdoor unit condenser coil is disconnected or shorted out 4X 5X
46 Outdoor unit suction line thermistor is disconnected or shorted out 4X 6X
48 Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out 4X 8X
53 Communication failure from outdoor unit to indoor unit 5X 3X
60 Outdoor unit printed circuit board (PCB) EEPROM check sum error 6X -
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