Page 35
Ignitor Check Out
Test 1
Remove 5-pin plug from control
Check ohms reading across terminals 1and 5
Ohm value should be between 39 - 70.
Test 2
Seperate the 2-pin jack plug near the manifold
and check resistance of the ignitor. If the reading
is correct, then then there is a problem with the
wiring between the jack plug and control. If the
reading is not correct the issue is the ignitor.
Test 3
Insert meter probes into the terminals 1 and 5. (Use small
diameter probes in order to not damage plug). Check voltage
during 20 second warm up period. Voltage should read 120
volts +
10%. If voltage is above these values, check for correct
supply voltage to furnace.
Test 1
Integrated Control Board
Detail
Test 2
Integrated Control
Detail
Integrated Control Board
Detail
Multi−Meter
(set to VAC)
Multi−Meter
(set to ohms)
Multi−Meter
(set to ohms)
FIGURE 15
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