Dehumidifier shows EC and stops dehumidifying

Safety: The refrigeration circuit is sealed and under pressure. Do not cut or open any copper lines yourself.

Steps:

• Check for icing: Inspect the evaporator coil. If it is heavily iced, allow it to defrost completely and ensure the room temperature is within the operating range.
• Clean filters and coils: Dirty filters and coils can cause abnormal pressures. Clean the air filter and gently brush dust from coils.
• Listen for compressor: When turned on, check if the compressor runs or stops quickly. Rapid cycling with EC may indicate a pressure protection trip.
• Look for oil stains: Oil spots on copper tubing or joints can indicate a refrigerant leak.
• Professional service required: If EC persists, a certified refrigeration technician must check system pressures, locate leaks, and recharge with the correct refrigerant. This cannot be safely done at home.