Maintenance; Error Code List - Airwell HDL Service Manual

9. Maintenance

9.1 Error Code List

Note:All models is except 18K
Dual-8
Malfunction
NO.
Code
Name
Display
High
pressure
1 E1
protection of
system
Anti-freezing
2 protection for E2
evaporator
High
discharge
3 temperature E4
protection of
compressor
Overcurrent
4 E5
protection
Communi-
5 cation E6
Malfunction
High
temperature
6 E8
resistant
protection
Cold air
7 prevention E9
protection
EEPROM
8 EE
malfunction
Limit/
decrease
frequency
9 EU
due to high
temperature
of module
Malfunction
10 protection of C5
jumper cap
37
Display Method of Indoor Unit
Indicator Display (during blinking,
ON 0.5s and OFF 0.5s)
Operation Cool Heating
Indicator Indicator Indicator
A/C status
During cooling and drying
operation, except indoor fan
operates, all loads stop operation.
During heating operation, the
complete unit stops.
Not the error code. It's the status
code for the operation
During cooling and drying
operation, compressor and
outdoor fan stop while indoor fan
operates. During heating
operation, all loads stop.
During cooling and drying
operation, compressor and
outdoor fan stop while indoor fan
operates. During heating
operation, all loads stop.
During cooling operation,
compressor stops while indoor fan
motor operates. During heating
operation, the complete unit stops.
During cooling operation:
compressor will stop while indoor
fan will operate. During heating
operation, the complete unit stops.
Not the error code. It's the status
code for the operation
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
All loads operate normally, while
operation frequency for
compressor is decreased
Wireless remote receiver and
button are effective, but can
not dispose the related
command
Possible Causes
Possible reasons:
1. Refrigerant was superabundant;
2. Poor heat exchange (including
filth blockage of heat exchanger
and bad radiating environment );
Ambient temperature is too high.
Please refer to the malfunction
analysis (discharge protection,
overload).
1. Supply voltage is unstable;
2. Supply voltage is too low and
load is too high;
3. Evaporator is dirty.
Refer to the corresponding
malfunction analysis.
Refer to the malfunction analysis
(overload, high temperature
resistant).
Replace outdoor control panel AP1
Discharging after the complete unit
is de-energized for 20mins, check
whether the thermal grease on
IPM Module of outdoor control
panel AP1 is sufficient and whether
the radiator is inserted tightly.
If its no use, please replace control
panel AP1.
1. No jumper cap insert on
mainboard.
2. Incorrect insert of jumper cap.
3. Jumper cap damaged.
4. Abnormal detecting circuit of
mainboard.