How to Fix / Troubleshooting

Safety: Unplug the unit. Refrigerant work must be done by a licensed technician.

Steps:

Visual inspection: Look for oil stains on refrigerant lines, around the evaporator, condenser, or compressor—these can indicate leaks.
Coil behavior: If only part of the evaporator gets cold or frosts, or if there is no cooling at all, a refrigerant issue is likely.
Sensor wiring: Check connections to any pressure or temperature sensors on the refrigerant lines.
Professional service: Have a certified technician perform a leak check, repair any leaks, replace the filter drier if necessary, evacuate, and recharge the system to the specified amount.
Board/sensor replacement: If pressures are normal, the pressure sensor or main control board may need replacement.

Dehumidifier shows EC and stops; may restart and stop repeatedly.

Possible Causes