38MGRBQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
26
Diagnostic Guides
Table 23 — Outdoor Unit Error Display
DISPLAY MALFUNCTION AND PROTECTION INDICATION
EL01 Communication malfunction between indoor and outdoor units
FL14 Incapability between indoor and outdoor units
EC50 Outdoor temperature sensor
EC51 Outdoor EEPROM error
EC52 Condenser coil temperature sensor (T3) malfunction
EC53 Outdoor ambient temperature sensor (T4) malfunction
EC54 Compressor discharge temperature sensor TP is in an open circuit or has short circuited
EC55 Outdoor IPM module temperature sensor malfunction
EC56 Outdoor T2B sensor error
EC57 Refrigerant pipe temperature sensor error
EC07 Outdoor DC fan motor malfunction speed out of control
EC71 Over current failure of outdoor DC fan motor
EC72 Lack phase failure of outdoor DC fan motor
PC00 Inverter module (IPM) protection
PC02 Top temperature protection of compressor
PC06 Discharge temperature protection of compressor
PC08 Outdoor overcurrent protection
PC0A High temperature protection of condenser
PC0F PFC module protection
PC0L Low temperature outdoor unit protection
PC10 Outdoor unit low AC voltage protection
PC11 Outdoor unit low AC voltage protection
PC12 Outdoor unit main control board DC bus high voltage protection /341 MCE error
PC30 System high pressure protection
PC31 System low pressure protection
PC40 Communication error between the outdoor main chip and the compressor driven chip
PC42 Compressor start failure of the outdoor unit
PC43 Outdoor compressor lack phase protection
PC44 Outdoor unit zero speed protection
PC45 Outdoor unit IR chip drive failure
PC46 Compressor speed is out of control
PC49 Compressor overcurrent failure
PCA1 Condensation protection of the refrigerant pipe
PH90 High temperature protection of the evaporator
PH91 Low temperature protection of the evaporator
LC06 High temperature protection of inverter module (IPM)
NOTE: If displays DF or FC, it is a normal operation, not a malfunction.
To Next Page
Loading...
