gf8370d2003a

Terminating heater operation due to exceptional operating states or defective component

Type gf · topic 83.70 · version 0102 · 1999-09-15

Applies to: MODEL 901.06, 902.06 /07, 903.06 /07, 904.06 with CODE (H11) Hot air auxiliary heater Heater designation B3L-C MODEL 901.36 /37 /46, 902.36 /37 /46 /47, 903.36 /37 /46 /47, 904.36 /46 with CODE (H11) Hot air auxiliary heater Heater designation D3L-C MODEL 902.32 /42, 903.32 /42, 904.32 /42 with CODE (H11) Hot air auxiliary heater Heater designation D1L-C MODEL 903.02 with CODE (H11) Hot air auxiliary heater Heater designation B1L-C

Where it sits

Function group 3 Body › 83 Climate control › 83.70 Auxiliary/supplementary heater — Series 901 (models 06*, 36*, 37*, 46*) · Series 902 (models 06*, 07*, 32*, 36*, 37*, 42*, 46*, 47*) · Series 903 (models 02*, 06*, 07*, 32*, 36*, 37*, 42*, 46*, 47*) · Series 904 (models 06*, 32*, 36*, 42*, 46*)

GF83.70-D-2003A

Terminating heater operation due to exceptional operating states or defective component

1.10.96

MODEL 901.06, 902.06 /07, 903.06 /07, 904.06 with CODE (H11) Hot air auxiliary heater
Heater designation B3L-C

MODEL 901.36 /37 /46, 902.36 /37 /46 /47, 903.36 /37 /46 /47, 904.36 /46 with CODE (H11) Hot air auxiliary heater
Heater designation D3L-C

MODEL 902.32 /42, 903.32 /42, 904.32 /42 with CODE (H11) Hot air auxiliary heater
Heater designation D1L-C

MODEL 903.02 with CODE (H11) Hot air auxiliary heater
Heater designation B1L-C

The flame sensor and overheat switch have an effect on the control module for switching off the heater in the event of a malfunction. Start repetitions upon failure to start or flame discontinuation during operation:

If the heater does not ignite, following the second start repetition, the system goes to malfunction shut-off.

If the voltage (with glow plug switched on) drops to below 9.5 volts or increases to above 14 volts, the system goes to malfunction shut-off.

If the voltage (with glow plug switched off) drops to below 10.5 volts or increases to above 14.7 volts, the system goes to malfunction shut-off.

Flame sensor, location/purpose

GF83.70-D-4014A

Auxiliary heater control module, location/purpose

Heater designation B1L-C/D1L-C

GF83.70-D-4015A

Auxiliary heater control module, location/purpose

Heater designation B3L-C/D3L-C

GF83.70-D-4015B

Glow plug, location/purpose

Heater designation B1L-C/D1L-C

GF83.70-D-4013A

Glow plug, location/purpose

Heater designation B3L-C/D3L-C

GF83.70-D-4013B

Referenced documents