C4 - Malfunction of liquid pipe thermistor for heat exchanger (Indoor Unit)

Was bedeutet C4 ?

This code signifies a problem with the temperature sensor (thermistor) on the liquid pipe of the indoor unit's heat exchanger.

• Faulty liquid pipe thermistor
• Loose or damaged wiring to the thermistor
• Incorrect installation of the thermistor

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Turn off power to the unit.

2. 2

   Visually inspect the wiring connected to the liquid pipe thermistor.

3. 3

   Turn the power back on.

4. 4

   If the error code remains, contact a service professional.