Technical data

Function Tests Air Top 2000 ST
612
6.4.7 Heater component
3
3
3
3
A
Complete heater
Testing of all electrical
components
Description Procedure Testing and
measuring
equipment
Remove upper shell from
heater and pull component
connector off control unit
PCB. Wire colours of
individual components:
Glow plug (yellow),
Flame monitor (brown),
Drive unit (purple),
Overheating protection
(blue)
Replace component and
continue
Resistance
measurement
Digital
multimeter
Replace component and
continue
Resistance
measurement
Digital
multimeter
Replace component and
continue
Resistance
measurement
Digital
multimeter
Replace component and
continue
Continuity
measurement
Digital
multimeter
yes
no
Glow plug:
Resistance outside
1.1 - 1.6 ohms?
Flame monitor
(only petrol heater):
Resistance outside
2,5 - 3,8 ohms?
Installation of component
in unit => short circuit to metal
parts (heat exchanger etc.)?
All tested electrical
components are OK
yes
no
yes
no
yes
no
Drive unit:
Resistance outside
0 - 6 ohms?