Stationary heater malfunction shut-off, function - GF83.70-G-3037A

MODEL 463 as of 1.6.94 with CODE (H12) Stationary 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

	Starting heater operation		GF83.70-G-2000A
	Shut-off delay		GF83.70-G-3034A
	Malfunction interlock reset		GF83.70-G-3038A