Upper lamp blinks 2 times - Thermistor issue (Indoor coil or Room temperature)

Was bedeutet 2-time blink (2.5-second OFF) ?

The upper operation indicator lamp blinks twice with a 2.5-second pause. This indicates a short or open circuit in either the indoor coil thermistor or the room temperature thermistor.

• Indoor coil thermistor failure
• Room temperature thermistor failure
• Wiring fault to either thermistor

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Refer to the characteristics of the indoor coil and room temperature thermistors in section 10-7.

2. 2

   Inspect the wiring and connections for both thermistors.

3. 3

   Replace the faulty thermistor.