U7 - 3 red flashes, 1 green flash — Low discharge superheat

Was bedeutet U7 ?

This error suggests the discharge superheat is too low, meaning the refrigerant may not be properly absorbing heat. Check the TH4 reading and LEV operation.

• Incorrect TH4 reading
• LEV (Liquid Expansion Valve) malfunction
• Refrigerant charge issue
• Poor heat absorption

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Verify the TH4 thermistor reading is accurate.

2. 2

   Check the operation of the LEV.

3. 3

   Ensure the refrigerant charge is correct (requires professional).

4. 4

   Inspect airflow across the evaporator coil.