EH C2 error code

What triggers it

The refrigerant sensor is out of range and leakage is detected at the manual's LFL thresholds.

What to do

1. Power off, then restart the unit 2 minutes later.
2. If the problem remains, check the system for refrigerant leakage.
3. If leakage is present, repair the leak and recharge refrigerant.
4. If no leakage is found, check the refrigerant system for blockages and clear any blockage.

Reset procedure

Power off, then restart the unit 2 minutes later. For multi-zone leakage alarm, the manual says the buzzer alarm can be eliminated by pressing any key on the remote, wired controller, or app.

Which systems show it

• MRCOOL DIY 5th Generation single-zone 9k, 12k, 18k, 24k, and 36k D25 indoor/outdoor models listed in manual section 1.1.

Related codes

Technician scope

Refrigerant sensor, leak repair

Source

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