To Next PageTo Next PageWhat to do if my Mitsubishi Electric Heat Pump shows error code E6?
If your Mitsubishi Electric Heat Pump displays check code E6, it indicates an indoor/outdoor unit communication error, potentially due to contact failure, a short circuit, or incorrect wiring of the connecting wire between the indoor and outdoor units. Check the LED display on the outdoor control circuit board, using a Connect A-control service tool (PAC-SK52ST).
Why does the display not appear on my Mitsubishi Electric PKA-A18HA6 Heat Pump?
If the display messages on your Mitsubishi Electric Heat Pump do not appear when the operation switch is turned on, and the operation lamp does not light up, it might be due to incorrect wiring between the indoor and outdoor units (incorrect polarity of S1, S2, S3) or a short in the remote controller wire. Check the wiring of the remote controller.
What does E0 or E4 mean on my Mitsubishi Electric PKA-A18HA6 remote?
If your Mitsubishi Electric Heat Pump displays check code E0 or E4, this indicates a remote controller transmission or signal receiving error. This can occur if the main or sub remote controller cannot receive any transmission normally from the indoor unit of refrigerant address “0” for 3 minutes, or if all remote controllers are set as “sub” remote controllers. First, check if the cause of the trouble is not in the mentioned causes. If the issue persists and there is no problem with the previous action, set one of the remote controllers to “main”.
How to fix Mitsubishi Electric Heat Pump error code E3 or E5?
If your Mitsubishi Electric Heat Pump displays check code E3 or E5, it means there's a remote controller transmission error. This can happen if the remote controller couldn't find a blank transmission path for 6 seconds or if the remote controller receives and compares transmitted data, judging them as different 30 consecutive times. Set one remote controller to main and the other to sub. If the problem continues, diagnose the remote controller.
What to do if the Mitsubishi Electric PKA-A18HA6 trouble is not reoccurring but logged?
If the trouble with your Mitsubishi Electric Heat Pump is not reoccurring but has been logged, it may be due to temporary defects such as the activation of protection devices in the refrigerant circuit (including the compressor), poor wiring connections, or noise. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the trouble occurred, and wiring. After finishing service, reset check code logs and restart the unit. If the problem persists, it may indicate no abnormality in electrical components, the controller board, or the remote controller.
What to do if the Mitsubishi Electric PKA-A18HA6 Heat Pump trouble is not reoccurring and not logged?
If a problem with your Mitsubishi Electric Heat Pump occurred but is not reoccurring and not logged, re-check the abnormal symptom. Conduct troubleshooting to ascertain the cause of the trouble. If the cause is not ascertained, continue to operate the unit for the time being. If the problem persists, it may indicate no abnormality concerning parts such as electrical components, the controller board, or the remote controller.
General| Brand | Mitsubishi Electric |
|---|---|
| Model | PKA-A18HA6 |
| Category | Heat Pump |
| Language | English |
General safety instructions before accessing internal components.
Specific precautions for using R410A refrigerant and related tools.
Provides a summary of self-diagnosis and actions for recurring issues.
Details how to perform malfunction diagnosis using the IR wireless remote controller.
Lists check codes, causes, and countermeasures for self-diagnosis.
Addresses issues not covered by self-diagnosis codes, like vane or receiver problems.
Steps to remove the lower side of the indoor unit from the installation plate.
Procedure for safely removing the front panel of the indoor unit.
Steps to remove the indoor controller and IR wireless controller boards.
