AA-01 — Backup heater overheated or BUH power cable not connected

Was bedeutet AA-01 ?

The backup heater has overheated, or its power cable is not properly connected.

• Faulty thermostat for backup heater
• Wiring issue
• Backup heater element failure

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check that the BUH power cable is securely connected.

2. 2

   Inspect the backup heater for any visible damage.

3. 3

   Reset the unit via the power supply.

4. 4

   If the problem persists, a technician should inspect the backup heater.