38MGRBQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
27
Diagnostic Guides (Cont)
Table 24 — Outdoor Unit Error Display (48 High Heat Only)
DISPLAY MALFUNCTION AND PROTECTION INDICATION
E1 Communication Malfunction between indoor and outdoor units
F0 Current Overload Protection
F1 Outdoor Ambient Temperature Sensor (T4) malfunction
F2 Condenser coil temperature sensor (T3) malfunction
F3 Compressor discharge temperature sensor (T5) malfunction
F4 Outdoor unit EEPROM parameter error
F5 Outdoor fan speed is out of control
PO Inverter module (IPM) malfunction
P1 Over-voltage or under voltage protection
P2 Compressor top high temperature protection (OLP)
P3 Low ambient temperature cut off in HEATING
P4 Compressor drive malfunction
J0 High temperature protection of outdoor coil in COOLING
J1 Outdoor temperature protection of indoor coil in HEATING
J2 Temperature protection of compressor discharge
J3 PFC Module Protection
J4 Communication malfunction between control board and IPM board
J5 High pressure protection
J6 Low pressure protection
P7 Outdoor IPM module temperature sensor malfunction
J8 AC voltage protection
Fb Injection enthalpy inlet temperature sensor error
Fd Injection enthalpy outlet temperature sensor error
To Next Page
Loading...
