CLS 550 (219.372) V8-5.5L (273.960) (2007)
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.