Combustion PREHEATER Module (CPM)

Fig 1: Identifying Combustion Preheater Module (CPM)

Courtesy of VOLVO CARS CORPORATION

The control module is integrated in the heater - located under a cover at one end of the heater. The connection for the combustion air fan is located on the underside of the control module.

The control module receives signals from the sensor and other components. The control module uses this data to regulate heater start, output, shut-off, etc.

The control module also continually monitors heater components to ensure proper function.