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Mercedes Benz Workshop Service and Repair Manuals

GF20.00-P-2200V Component Description For the Heating System Shutoff Valve|Page 5635 > < GF20.00-P-2200V Component Description For the Heating System Shutoff Valve
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Heater Control Valve: Description and Operation
GF83.20-P-3124TX Heat Exchanger Shutoff Motor Component Description

GF83.20-P-3124TX Heat Exchanger Shutoff Motor Component Description

Component Identification

Location

The heat exchanger shutoff motor is located at the left rear side of the engine compartment.

Task

The heat exchanger shutoff motor regulates the flow of temperature-controlled coolant to the heating system heat exchanger.

Function

The heat exchanger shutoff motor is actuated by the driver-side SAM control unit with fuse and relay module (N10/1) after a request from the AAC
control and operating unit (N22) (without code (581) Comfort automatic air conditioning) or the comfort AAC (C-AAC) control and operating unit
(N22/7) (with code (581) Comfort automatic air conditioning) in such a way that an adequate quantity of temperature-controlled coolant is always
available.

Opening of heat exchanger shutoff motor

The heat exchanger shutoff motor is opened as soon as a heating request is present.

Closing of heat exchanger shutoff motor

The heat exchanger shutoff motor is closed as soon as a heating request is no longer present.

The only settings are "open" and "closed"; there are no intermediate settings.

GF20.00-P-2200V Component Description For the Heating System Shutoff Valve|Page 5635 > < GF20.00-P-2200V Component Description For the Heating System Shutoff Valve