Diagnostic codes covered
EH 0E(EH0E)
- EH 0E – Water-Level Alarm Malfunction
Description: If the sampling voltage is not 5V, the LED displays the failure code. Recommended parts to prepare: Connection wires, Water-level switch, Water pump, Indoor PCB
Troubleshooting workflow
Workflow source: original 37MGRA-02SM service-manual PDF. Error-code names cross-checked against 37MGRA-04SI.