Models: KSIM20912-H216, KSIM30912-H216, KSIM40912-H216
|E1||Communication error between indoor and outdoor unit|
|E2||Zero-crossing examination error|
|E3||Fan speed beyond control|
|E5||Outdoor units temp. sensor or connector of temp. sensor is defective|
|E6||Indoor units temp. sensor or connector of temp. sensor is defective|
|P0||Inverter module protection|
|P1||Outdoor voltage too low protection|
|P2||Compressor discharge temp. protection|
|P3||Outdoor temp. too low protection|
|P4||Compressor driving protection|
|P5||Outdoor temp. too low protection|
|Troubleshooting for outdoor unit|
|E1||No 1 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective|
|E2||No 2 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective|
|E3||No 3 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective|
|E6||No 4 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective|
|E4||Outdoor temp. sensor or connector of temp. sensor is defective|
|E5||Compressor volt protection|
|E7||Communication error between outdoor IC and DSP|
|P0||Compressor discharge temp. protection|
|P1||High pressure protection (just for 36K 1x4 units.)|
|P2||Low pressure protection (just for 36K 1x4 units.)|
|P3||Compressor current protection|
|P4||Inverter module protection|
|P5||Outdoor temp. too low protection|
|P6||Condenser high-temperature protection|
|P7||Compressor driving protection|
Diagnosis and Solution:
EEPROM parameter error diagnosis and solution (E0/F4):
Malfunction decision conditions: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Supposed causes: Installation mistake. PCB faulty .
Indoor / outdoor unit’s communication diagnosis and solution (E1):
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. Indoor or outdoor PCB faulty.
Zero crossing detection error diagnosis and solution (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.
Fan speed has been out of control diagnosis and solution (E3)
Malfunction decision conditions: When indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will display the failure
Supposed causes: Wiring mistake. Fan assembly faulty. Fan motor faulty. PCB faulty.
The following problems are not a malfunction and in most situations will not require repairs.
Issue: Unit does not turn on when pressing ON/OFF button
Possible Causes: The Unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned off.
Issue: The unit changes from COOL/HEAT mode to FAN mode
- The unit may change its setting to prevent frost from forming on the unit. Once the temperature increases, the unit will start operating in the previously selected mode again.
- The set temperature has been reached, at which point the unit turns off the compressor. The unit will continue operating when the temperature fluctuates again.
Issue: The indoor unit emits white mist
Possible Causes: In humid regions, a large temperature difference between the room’s air and the conditioned air can cause white mist.
Issue: The indoor unit makes noises
- A rushing air sound may occur when the louver resets its position.
- A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit’s plastic parts.
How to operate your unit without the remote control?
In the event that your remote control fails to work, your unit can be operated manually with the MANUAL CONTROL button located on the indoor unit. Note that manual operation is not a long-term solution, and that operating the unit with your remote control is strongly recommended.
To operate your unit manually:
- Open the front panel of the indoor unit.
- Locate the MANUAL CONTROL button on the right-hand side of the unit.
- Press the MANUAL CONTROL button one time to activate FORCED AUTO mode.
- Press the MANUAL CONTROL again to activate FORCED COOLING mode.
- Press the MANUAL CONTROL button a third time to turn the unit off.
- Close the front panel.