Our mobile repair service can come out to you to trace the fault with your car heater or truck cab night heater if you are in the Telford or Shropshire areas. Tel :01952 247007

If the heater motor has stopped working it may be as simple as a blown fuse or faulty switch, or could be more complex in a vehicle fitted with climate control and air conditioning.

A typical climate controlled vehicle has a drivers control panel linked to a climate control computer. The driver sets the desired temperature , then the computer processes other inputs from various temperature sensors and pressure switches located in the cabin and engine compartments of the vehicle and provides outputs to control air vent flaps, blower motor speed,fans, and switch the air conditioning compressor electromagnetic clutch on or off, enabling the preset temperature to be maintained. Even heat from the sun
can affect the cabin temperature of the vehicle as it shines on the windscreens so a solar sensor may also be fitted.
The extra load demand introduced as a vehicle air conditioning system operates means the vehicle will be fitted with a heavier duty alternator than standard to cope with extra power requirements.
Climate control systems are often linked to engine control systems so idle speed is increased when the air conditioning is switched in, or when the vehicle is accelerating at wide open throttle (WOT) the air conditioning system compressor is temporarily switched off.