508034-02
Issue 2135
Page 10 of 49
Test 1
Meter
(set to ohms)
Remove 5-pin plug from control
Check ohms reading across terminals 1 and 5
Ohm value should be between 39 - 70.
Integrated control detail
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.
Meter
(set to ohms)
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.
Integrated control detail
Integrated control detail
Meter
(set to AC volts)
Figure 6. Ignitor Check Out
(exploded view for clarity)