Error 152 — Closed EEV of indoor unit (2nd detection)

Was bedeutet 152 ?

The Electronic Expansion Valve (EEV) in the indoor unit is detected as being closed when it should be open or regulating. This is a confirmed issue, restricting refrigerant flow and proper operation.

• Faulty EEV valve
• Control system malfunction preventing EEV opening
• Blockage in the refrigerant line
• Electrical fault to the EEV

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Perform a full power cycle of the HVAC system by cutting power at the circuit breaker.

2. 2

   Allow the unit to remain unpowered for several minutes to ensure a complete reset.

3. 3

   Switch the power back on and monitor the system for normal operation.

4. 4

   If the EEV remains closed, it could indicate an electrical or mechanical failure of the valve or a related component.

5. 5

   Contact a qualified HVAC technician, as this fault requires specialized diagnostic tools and expertise.