Century COMFORT-AIRE VMH-SG Series Service Manual page 72

2.
2.1
When the indoor unit encounters a recognized error on different models ,
1. the running LED with flash in a corresponding series, the timer LED may turn on or begin flashing;
2. an error code will be displayed;
3. both 1 and 2.
These error codes are described in the following tables:
Running Timer
Display
Lamp Lamp
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
1 time OFF EH 00/EH 0A
2 times OFF
3 times OFF
4 times OFF
5 times OFF
5 times OFF
5 times OFF
5 times OFF
5 times OFF
6 times OFF
6 times OFF
12 times OFF
9 times OFF
8 times OFF
7 times FLASH
2 times FLASH
Information
Defrost
F
Filter cleaning reminder(power on display for 15 seconds)
CL
CL Active clean
Filter replacement reminder(power on display for 15 seconds)
F
Heating in room temperature under 8°C
FP
FC Forced cooling
AP mode of WIFI connection
AP
Remote switched off
CP
Indoor unit EEPROM parameter error
Indoor/outdoor unit communication error
EL 01
Zero-crossing signal detection error
EH 02
EH 03 The indoor fan speed is operating outside of the normal range
Outdoor unit EEPROM parameter error
EC 51
Condenser coil temperature sensor T3 is in open circuit or has short
EC 52
circuited
Outdoor room temperature sensor T4 is in open circuit or has short
EC 53
circuited
Compressor discharge temperature sensor TP is in open circuit or
EC 54
has short circuited
Evaporator coil outlet temperature sensor T2B is in open circuit or
EC 56
has short circuited(for free-match indoor units)
Indoor room temperature sensor T1 is in open circuit or has short
EH 60
circuited
Evaporator coil middle temperature sensor T2 is in open circuit or
EH 61
has short circuited
The outdoor fan speed is operating outside of the normal range
EC 07
Indoor PCB/Display board communication error
EH 0
Refrigerant leakage detection
EL 0C
IPM malfunction or IGBT over-strong current protection
PC 00
PC 01 Over voltage or over low voltage protection
 Troubleshooting 4
Troubleshooting 4
Service Manual - VMHxxSG

Solution
Normal
Display, not
error code
TS01-IDU
TS02-S-INV
TS03
TS04-S-IDU
TS01-ODU
TS05-ODU
TS05-ODU
TS05-ODU
TS05-ODU
TS05-IDU
TS05-IDU
TS04-ODU
TS07
TS06-INV
TS09-S
TS10-S