Klimaire KSIE012H120SW, KSIE024H220SW Troubleshooting Guide
TROUBLESHOOTING
9. Troubleshooting
Safety
Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity
power in capacitor.
Electrolytic Capacitors
(HIGH VOLTAGE! CAUTION!)
For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, -
terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.
Note: The picture above is only for reference. The plug of your side may be different.
1
9.1 Indoor Unit Error Display
Operation
lamp
Timer lamp
Display
LED STATUS
☆ 1 time
X
E0
Indoor unit EEPROM parameter error
☆ 2 times
X
E1
Indoor / outdoor units communication error
☆ 3 times
X
E2
Zero-crossing signal detection error
☆ 4 times
X
E3
Indoor fan speed has been out of control
☆ 5 times
X
E4
Indoor room temperature sensor T1 open circuit or short
circuit
☆ 6 times
X
E5
Evaporator coil temperature sensor T2 open circuit or
short circuit
☆ 7 times
X
EC
Refrigerant leakage detection
☆ 1 times
O
F0
Overload current protection
☆ 2 times
O
F1
Outdoor ambient temperature sensor T4 open circuit or
short circuit
☆ 3 times
O
F2
Condenser coil temperature sensor T3 open circuit or
short circuit
☆ 4 times
O
F3
Compressor discharge temperature sensor T5 open
circuit or short circuit
☆ 5 times
O
F4
Outdoor unit EEPROM parameter error
☆ 6 times
O
F5
Outdoor fan speed has been out of control
☆ 1 times
☆
P0
IPM malfunction or IGBT over-strong current protection
☆ 2 times
☆
P1
Over voltage or over low voltage protection
☆ 3 times
☆
P2
High temperature protection of compressor top
diagnosis and solution(only for 9k,12k models)
☆ 4 times
☆
P3*
Outdoor ambient temperature too low.
☆ 5 times
☆
P4
Inverter compressor drive error
☆ 6 times
☆
P5
Indoor units mode conflict (multi-zone ONLY)
O（light） X（off） ☆（flash）
*P3
1) In heating mode, when the outdoor temperature is lower than -25 for 1 hour, the indoor unit display error
code P3.
2) If the OUTDOOR temperature is higher than -22c for 10 minutes and compressor stop for 1 hour OR outdoor
temperature is higher than -5C for 10 minutes, then the unit will return to work.
2
9.2 Outdoor unit error display(TBD)
Error Code
E0/F4
Malfunction decision
conditions
Indoor or outdoor PCB main chip does not receive feedback
from EEPROM chip.
Supposed causes
● Installation mistake
● PCB faulty
Yes
Replace the indoor/outdoor
main PCB.
Power off, then restart the
unit 2 minutes later.
Indoor PCB
Outdoor PCB
Note: The two photos above are only for reference, it’s may be not same totally with the ones on
your side.
9.3 Diagnosis and Solution
9.3.1 EEPROM parameter error diagnosis and solution(E0/F4)
Trouble shooting:
EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed
voltage. For the location of EEPROM chip, please refer to the below photos.
3
9.3.2 Indoor / outdoor unit’s communication diagnosis and solution(E1)
E1
Indoor or outdoor PCB faulty
M
eas
ureVs
V
w
Measure Vs, is it positive fluctuation?
(Vs is the voltage between 2 and 3 of
outdoor unit. Red pan-3, Black pan-2)
Yes
w
Power off, then restart the unit 2 minutes later
No
w
x
Replace the outdoor main PCB.
Power on. Is the error
extinguished?
Check the outdoor wiring connection
Replace the indoor main PCB.
Power on. Is the error
extinguished?
Yes
Replace the outdoor main PCB.
No
Replace the indoor main PCB.
No
w
Check the indoor wiring connection
Yes
Yes
Check whether reactor
is normal?
Yes
Replace the reactor No
Error Code
Malfunction decision
conditions
Indoor unit does not receive the feedback from outdoor unit during
110 seconds and this condition happens four times continuously.
Supposed causes ● Wiring mistake
●
Trouble shooting:
*
* Vs is the voltage between S and N ( for 115V 2014 models)
*Vs is the voltage between 2 and 3 ( for 2015 models)
4
Remark:
Use a multimeter to test the DC voltage
between 2 port and 3 port of outdoor unit.
The red pin of multimeter connects with 2
port while the black pin is for 3 port.
When AC is normal running, the voltage
will move alternately between -50V to
50V.
If the outdoor unit has malfunction, the
voltage will move alternately with positive
value.
While if the indoor unit has malfunction,
the voltage will be a certain value.
Remark:
Use a multimeter to test the resistance
of the reactor which does not connect
with capacitor.
The normal value should be around zero
ohm. Otherwise, the reactor must have
malfunction and need to be replaced.
5
9.3.3 Zero crossing detection error diagnosis and solution (E2)
Error Code
E2
Malfunction decision
conditions
When PCB does not receive zero crossing signal feedback for 4
minutes or the zero crossing signal time interval is abnormal.
Supposed causes
● Connection mistake
● PCB faulty
Check if the connections and
power supply is normal?
Correct the connections. Turn on the
unit when the power supply is good.
No
Yes
Indoor main PCB is
defective. Replace indoor
main PCB.
Trouble shooting:
6
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