Troubleshooting; Indoor Unit Error Display - Heat Controller VMH C Series Service Manual

Heat Controller

9. Troubleshooting

9.1 Indoor Unit Error Display

Display LED STATUS
EEPROM parameter error
E0
E1 Indoor / outdoor units communication
protection
E2 Zero-crossing signal error
E3 Indoor fan speed has been out of
control
E5 Open or short circuit of outdoor
temperature sensor
E6 Open or short circuit of room or
evaporator temperature sensor
E7 Outdoor fan has been speed out of
control
P0 IBM malfunction or IGBT over-strong
current protection
P1 Excessive voltage or voltage too low
protection
P2 High temperature protection of
compressor top
P4 Inverter compressor drive error
Note: E4 & P3: Reserved functions
VMH 30, 36 SerieS
Def
O
☆
O
O
X
O
O
X
X
O
O
31
33
Timer Auto
O O
☆ ☆
O
☆
O
☆
O X
O O
O
☆
X O
O O
X X
X
☆
Service Manual
Operation
O
☆
☆
☆
☆
☆
☆
☆
☆
☆
☆