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Starting conditions, auxiliary heater

Starting conditions, auxiliary heater



Starting conditions 1 and 2

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

Diagnostics

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.