45MBDAQ: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
54
TROUBLESHOOTING
Table 29 — Error Codes
Table 30 — Refrigerant Leak Detection Error Codes
If you receive one of the codes in Table 30, call a technician as soon
as possible. No need to panic, the unit goes into TURBO mode until
the error code is cleared. There is a “beep” noise coming from the
indoor unit, which is normal in this case.
For additional diagnostic information, refer to the Service
Manual.
.
Display Malfunction and Protection Indication
EC07 ODU Fan Speed Out of Control
EC51 ODU EEPROM Parameter Error
EC52 ODU Coil Temperature Sensor(T3) error
EC53 ODU Ambient Temperature Sensor (T4) Error
EC54 COMP. Discharge Temperature Sensor (TP) Error
EC56 IDU Coil Temperature Sensor (T2B) Error
ECC1 Other IDU Refrigerant Sensor Detects Leakage (Multi-zone)*
EH00 IDU EEPROM Malfunction
EH03 IDU Fan Speed Out of Control
EH0A IDU EEPROM Parameter Error
EH0E Water Level Alarm Malfunction
EH12 Main Unit or Secondary Units Malfunction
EH3A External Fan DC bus voltage is too low protection
EH3b External Fan DC bus voltage is too high fault
EH60 IDU Room Temperature (T1) Error
EH61 IDU Coil Temperature Sensor (T2) Error
EHba Communication Error between the indoor unit and the external fan module
EHC1 Refrigerant Sensor Detects Leakage
EHC2 Refrigerant Sensor is out of range and a leak is detected
EHC3 Refrigerant Sensor is out of range*
EL01 IDU and ODU Communication Error
EL0C System lacks refrigerant
EL11 Communication Malfunction between the main and secondary units
FH07 IDU lift panel communication failure/IDU opening and closing failure
FHCC Refrigerant Sensor Error*
PC00 ODU IPM Module Protection
PC01 ODU Voltage Protection
PC02 Compressor To (or IPM Module Protection
PC03 Pressure Protection (Low or High Pressure)
PC04 Inverter Compressor Drive Error
PC0L Low Ambient Temperate Protection
NOTE: The digital tube will display FC in the FORCED COOLING mode. FC is NOT an error code. *Applicable to the units with refrigerant sensors
only.
EHC1 Refrigerant Sensor detects a leak
EHC2 Working condition of the refrigerant sensor is out of range and a leak is detected
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