37MGRA EH C1 (Refrigerant Sensor Detects Leakage) or EH C2 (Refrigerant Sensor is Out of Range and Leakage is Detected) Diagnosis and Solution

Codes de diagnostic couverts

EH C1, EH C2

• EH C1 – Refrigerant Sensor Detects Leakage
• EH C2 – Refrigerant Sensor Is Out of Range and Leakage Is Detected

Description: The refrigerant sensor detects a concentration higher than or equal to 10%*LFL for 10 seconds or the refrigerant sensor detects a concentration higher than or equal to 20%*LFL or the multi model receives the refrigerant leakage protection fault sent by the outdoor unit. Multi-zone: Only the buzzer of the indoor unit that detects refrigerant leakage continues to sound the alarm, the shortest sound is 10 seconds, and the longest sound is 5 minutes (you can press any key such as remote control or wire control, APP and so on to eliminate the alarm), and the other non-refrigerant leakage fault indoor unit only displays “ECC1”, but the buzzer does not sound. Recommended parts to prepare: Additional refrigerant Troubleshooting and repair: