Error Code 05

Damper heater element or connection failure

Minor

Usually easy to fix - may resolve on its own

Also displayed as: Right - ⑤ LED ON

What This Means

Connector slipped out or contact failure; Wire cut or broken; Heater element short circuited; Heater element open circuited

What actually causes this:

The heating element that warms the damper actuator has failed or the connection is severed, preventing proper damper operation

First Thing to Check

Check the damper heater connector at MAIN PCB CN76 for loose or disconnected terminals

Parts Involved

Damper Heater ElementMAIN PCB CN76Thermal Fuse

How to Fix

  1. 1

    Disconnect MAIN PCB CN76 from PCB

  2. 2

    Read resistance between Black and Brown wire terminals

  3. 3

    If 0 Ohm, heater is short circuited

  4. 4

    If infinite, wire or thermal fuse is open

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