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Starting conditions, auxiliary heater

Starting conditions, auxiliary heater





Staring conditions 1 and 2

The input for starting condition 1 and 2 is supplied via relay 409 which in turn is controlled by SID which, based on the outside temperature, decides if the heater is permitted to start.

Diagnosis

If power is missing on the input for starting condition 1 when the input for starting condition 2 is supplied with power, diagnostic trouble code B0487 is generated.