GF83.70-G-3037A Stationary Heater Malfunction Shut-Off, Function

GF83.70-G-3037A Stationary Heater Malfunction Shut-Off, Function
MODEL 463 as of 1.6.94 up to 31.5.12
- with CODE (H12) Auxiliary heater
Webasto Thermo Top S

When a malfunction occurs the heater performs a malfunction shut- off with shut-off delay followed by malfunction interlock.
After elimination of the malfunction it is necessary to reset the malfunction interlock. This is the only way to return to normal heater operation.

Possible causes leading to malfunction shut-off:
^ No flame formation
^ Flame goes out during heater operation
^ Stationary heater overheats (coolant temperature increases to above 105 °C)
^ Voltage too low: power supply < 9.7 - 10.3 V for longer than 20 s
^ Voltage too high: power supply > 15.5 V for longer than 6 s