Maintenance; Error Code List - Kinghome KW09HUCA4D Instruction Manual

9. Maintenance

9.1 Error Code List

Display Method of Indoor Unit
Malfunction
Dual-8
NO.
Name
Code
Display
High
pressure
1 E1
protection of
system
Antifreezing
2 E2
protection
Refrigerant
3 leakage F0
protection
High
discharge
4 temperature E4
protection of
compressor
Overcurrent
5 E5
protection
Communi-
6 cation E6
Malfunction
High
temperature
7 E8
resistant
protection
EEPROM
8 EE
malfunction
Limit/
decrease
frequency
9 EU
due to high
temperature
of module
Malfunction
10 protection of C5
jumper cap
46
Indicator Display (during
blinking, ON 0.5s and OFF
0.5s)
Operation Cool Heating
Indicator Indicator Indicator
Possible reasons:
1. Refrigerant was superabundant;
2. Poor heat exchange (including
and bad radiating environment );
Ambient temperature is too high.
1. Poor air-return in indoor unit;
2. Fan speed is abnormal;
3. Evaporator is dirty.
1.Refrigerant leakage;
2.Indoor evaporator temperature
3.The unit has been plugged up
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
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.
Possible Causes
sensor works abnormally;
somewhere.
Service Manual
Installation and Maintenance