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

Diagnostic codes covered

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: