
Air Top 2000 ST Function Tests
605
6.4.2 Glow plug resistance test
(only petrol heater)
See Fig. 904, Item 1
If you conduct this test with a digital multimeter, the flame
monitor must have the values shown as following:
Cold testing:
Resistance at 25 °C: 2.6 - 3.4 ohms.
Test current: < 5 mA
Hot testing:
Resistance at 800 -1000 °C: 12 - 15 ohms.
Test current: < 5 mA
(ceramic rod at red heat over length of approx. 20 mm)
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