G6RA, G6RK Service Manual 33
Hot Surface Ignitor (See Figure 42.)
The hot surface ignitor is helical in shape and is located
approximately 3/16" in front of the burners. Its function is to
ignite fuel at the appropriate time in the sequence. The hot
surface ignitor used by NORDYNE is manufactured by
CARBORUNDUM.
NOTE: Special care should be taken when handling the ignitor.
You should never touch the ignitor surface. Grease or dirt from
your hands will shorten the ignitor's life.
Check-out Procedure:
1. Unplug ignitor from 2-prong plug.
2. Place a voltmeter on the proper scale (at least 115 vac).
3. Establish a call for heat.
4. After approx. 30 seconds of induced draft motor operation,
the ignitor should see line voltage.
5. If voltage is present, replace the ignitor. (See Figure 43.)
6. If no voltage is present, replace control board.
7. The ignitor may also be ohmed out. The ignitors usually
range from 125 to 150 ohms at 70°F/21°C. (See Figure
44.)
8. Be sure when replacement ignitor is installed that it is
approximately 3/16" from the burners. Mishandling and
misalignment are reasons why the ignitor could fail.
Figure 42.
Figure 43.
Figure 44.
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