15004 — Defrost thermistor fault, circuit B

Was bedeutet 15004 ?

The sensor monitoring the temperature for defrost on circuit B has failed. In cooling mode, an alert is displayed; in heating mode, circuit B shuts down.

• Defective thermistor
• Wiring issue with the defrost thermistor

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check the wiring to the defrost thermistor for circuit B.

2. 2

   Look for any signs of damage on the thermistor.

3. 3

   Reach out to Carrier Service if the issue is not resolved.