MAINTENANCE
Gentherm Global Power Technologi
es
Page 57
WARNING!
Remove the orange wire from the pressure switch and
make sure it cannot come into contact with other
electrical connections to prevent high voltage shock.
9.4.1
Check the Spark Electrode
WARNING!
Remove the 2-position screw connector from the SI
Controller board plugged into the header labeled
“IGN” to prevent accidental high voltage shock from
the igniter cable.
Follow these steps to check the spark electrode:
1.
Remove the spark electrode by loosening the wing-nut and sliding the electrode out,
(see Figure 13).
2.
Inspect the electrode for any cracks in the ceramic rod. If any cracks are found the
electrode must be replaced.
3.
Slide the electrode back into position through the burner back until it stops, and then
pull it back 3 to 6 mm (1/8 to 1/4 in.). The ceramic rod should extend about 25 mm
(1 in.) from the holding screw.
4.
Tighten the wing-nut only until it is snug.
CAUTION!
Do not over tighten the wing-nut or the ceramic rod
will crack
5.
Loosen the orange wire connectors from the terminals on the pressure switch and
then short the circuit between the two terminals. Arcing should occur in the
combustion chamber (making a clicking noise) at the rate of one per second.
