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SERVICE
TROUBLESHOOTING THE GAS CONTROL SYSTEM
Note:
Before troubleshooting the gas control system, be sure external gas shut off is in the "on" position.
WARNING: BEFORE DOING ANY GAS CONTROL SERVICE WORK, REMOVE THE GLASS FRONT.
PROBLEM
Spark igniter will not
Piezo wire loose
light pilot.
Defective Piezo igniter.
Piezo wire grounding out.
Electrode is grounding out
and/or wrong location.
Pilot will not stay lit
Defective thermopile.
after carefully fol-
Defective thermocouple.
lowing lighting in-
Thermopile/thermocouple
structions.
grounding out.
Loose thermopile leads.
TP-THTP on valve.
Defective automatic gas
valve.
Pilot burning, no gas
Valve wire connections are
to burner.
loose.
Valve knob is on.
Valve wires are defective.
Wall switch is on.
Spill switch has not been
reset (B-vent F/S).
Spill switch is stuck in the
open position. (B-vent INS
- F/S).
Frequent pilot out-
Pilot fl ame may be too low
age problems.
or blowing high causing the
pilot safety to drop out.
Two way switch wires may
be grounding out.
Thermopile and/or thermo-
couple may be grounding
out.
Note:
For service technicians only. See the Regency Troubleshooting Guide for more detailed information.
(Troubleshooting Regency Gas Products - Part # 908-439.)
ABNORMAL OPERATION
aava
If the main burner does not light but pilot stays on shut down heater and contact your dealer
If excessive carbon on logs or glass contact your deal-
22
TROUBLESHOOTING GUIDE
POSSIBLE
CAUSES
• Check for spark at electrode and pilot. If no spark, disconnect wire
at electrode and put wire to ground and try igniter again. If still no
spark follow Piezo wire to Piezo igniter to see where grounding may
be occurring.
• Bend electrode into pilot so gas may be able to contact spark.
• Check pilot fl ame, must impinge on thermopile and thermocouple.
• Clean and/or adjust pilot so pilot is enveloped around thermopile
and thermocouple and correct millivolt reading is set.
• Be sure wire connections at gas valve terminals are tight and ther-
mopile and thermocouple are fully inserted into pilot bracket.
• One of the switch wires may be grounded. May be grounded to gas
appliance or gas supply.
• Check thermopile with millivolt meter. Take reading at thermopile
terminals of valve TP-TPTH. Should read 250 millivolts minimum
while holding valve knob in pilot position with pilot on and wall switch/
two way switch off.
• Replace if lower than specifi ed minimum.
• Turn valve knob to on including pilot. Take reading at TP-TPTH with
on/off switch in the on position. Reading should be 100mv or greater.
If reading is okay and pilot does not hold, replace gas valve.
• Check two way switch/wall switch for proper connections. Jumper
wire across terminals at two way switch/wall switch. If burner comes
on, replace switch.
• If okay, jumper wire at valve at TH-THTP. If unit turns on, replace
wires and/or check where loose wires are.
• Clean and/or adjust pilot for maximum fl ame impingement on
thermopile and/or thermocouple and correct millivolt reading is
set.
• Trace wires from valve to two way switch/wall switch for possible
grounding against gas appliance and/or gas supply.
• Trace thermopile wires from valve to thermopile for possible
grounding against gas appliance and/or gas valve.
• Follow same steps for thermocouple.
CORRECTIVE ACTION
Regency I43-1 ULTIMATE Gas Inbuilt Fireplace
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