Section 10: Troubleshooting - Heat & Glo PALOMA-BL Owner's Manual

10
Troubleshooting
With proper installation, operation, and maintenance your gas appliance will provide years of trouble-free service. If you do
experience a problem, this troubleshooting guide will assist a qualified service person in the diagnosis of a problem and the
corrective action to be taken. This troubleshooting guide can only be used by a qualified service technician.
Symptom
1. The ignitor/
module makes
noise, but no spark.
2. Pilot won't light,
there is no noise or
spark.
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Possible Causes Corrective Actions
a. Incorrect wiring.
b.Loose connections
or electrical shorts in
the wiring.
c. Ignitor gap is too
large.
d. Faulty module.
a. Transformer
installed correctly.
b. A shorted or loose
connection in wiring
configuration or wiring
harness.
c. Improper wall
switch wiring.
d. Module not
grounded.
e. Faulty module.
Heat & Glo · Paloma · 7031-220G
Verify "S" wire (white) for sensor and "I" wire (orange) for ignitor are
connected to correct terminals on module and pilot assembly. Reversed
wires at the module may cause system to make sparking noise, but spark
may not be present at pilot hood.
Verify no loose connections or electrical shorts in wiring form module to pilot
assembly. Rod closest to pilot hood should be ignitor. Verify connections
underneath pilot assembly are tight; also, verify connections are not
grounding out to metal chassis, pilot burner, pilot enclosure, mesh screen
if present, or any other metal object.
Verify gap of ignitor to pilot hood. The gap should be approximately .17
inch or 1/8 in. (3mm).
Turn ON/OFF rocker switch or wall switch to OFF position. Remove ignitor
wire "I" from module. Place ON/OFF rocker switch or wall switch in ON
position. Hold ground wire about 3/16 in. (5mm) away from "I" terminal
on module. If there is no spark at "I" terminal, module must be replaced.
If there is a spark at "I" terminal, module is fine. Inspect pilot assembly for
shorted sparker wire or cracked insulator around electrode.
Verify that transformer is installed and plugged into module. Check voltage
of transformer under load at spade connection on module with ON/OFF
switch in ON position. Acceptable reading of a good transformer are
between 3.2 and 2.8 volts AC.
Remove and reinstall the wiring harness that plugs into module. Verify
there is a tight fit. Verify pilot assembly wiring to module. Remove and
verify continuity of each wire in wiring harness..
Verify that 110/VAC power is "ON" to junction box.
Verify black ground wire from module wire harness is grounded to metal
chassis of appliance.
Turn ON/OFF rocker switch or wall switch to OFF position. Remove ignitor
wire "I" from module. Place ON/OFF rocker switch or wall switch in ON
position. Hold ground wire about 3/16 in. (5mm) away from "I" terminal
on module. If there is no spark at "I" terminal, module must be replaced.
If there is a spark at terminal "I", module if fine. Inspect pilot assembly for
shorted sparker wire or cracked insulator around electrode.
February 8, 2006