Stationary Heater Control Unit, Component Description - GF83.70-P-4066GN
MODEL 166 as of model year 2016 with CODE 228 (Auxiliary heater)
MODEL 292 with CODE 228 (Auxiliary heater)
Shown on model 166.0
Location
The stationary heater control unit is integrated in the stationary heater unit, which is located in the rear section of the left wheel arch.
Task
The stationary heater control unit has the following tasks:
- Reading in of signals
- Evaluation of input factors
- Actuation of components
- Transmitting signals
Reading in of signals
The input factors are read in via the following connections:
- Direct line
- Interior CAN (CAN B)
Direct line
The signals from the following components are read via direct line:
- Stationary heater radio remote control receiver (A6/1) (with CODE B24 (Remote control for stationary heater))
- Stationary heater glow plug/flame monitor unit (A6r4)
- Stationary heater temperature sensor (A6b1)
- Stationary heater thermal fuse (A6f1)
If the temperature of T = 125 °C is exceeded in the heater unit, the thermal fuse of the STH recognizes overheating via the temperature sensor and switches the stationary heater off with subsequent overheating locking.
Interior CAN
The signals are read in via the interior CAN.
The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.
Actuation of components
The following components are actuated directly via a line:
- Stationary heater combustion air blower (A6m2)
- Stationary heater radio remote control receiver (with CODE B24 (Remote control for stationary heater))
- Stationary heater glow plug/flame monitor unit
- Stationary heater switchover valve (Y16)
- Stationary heater fuel pump (Y23)
Transmitting signals
The stationary heater control unit sends signals via interior CAN:
The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).
Variants
Engine variants:
- Gasoline engine
- Diesel engine
| Wiring diagram for stationary heater (STH) control unit | PE83.70-P-2101-97NBA |