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B0487

Read the instructions below then start the fault diagnostic procedure.

Symptom: Poor heating of cabin Heater does not start

B0487


Flame Off from Max Power


Fault symptoms

Poor heating of cabin

Heater does not start

Conditions

Voltage is missing on input for start condition 1 when start condition 2 is supplied with power.

Diagnostic help

The input can be read using the diagnostics tool.

The heater is provided with extra cabling and connector which is isolated from the ordinary cabling from the heater. This cabling and connector is not used but is connected to the control module, therefore always check that this cabling is undamaged before beginning fault tracing.

In the ordinary cabling between the heater and the 8-pin connector, there is an extra light green lead that is cut and is not used.