TROUBLESHOOTING
GENERAL All furnaces have been
1.Inlet gas pressure.
2.Type of gas being used and that shown on the rating plate.
The Service Department at Empire Comfort Systems, Inc. may be contacted to assist in servicing furnace.
Servicing the Pilot and Main Burner, Pilot OriÞce, Thermopile and Main Burner OriÞce
Disconnect the gas supply at the inlet to the control valve. Remove the burner assembly to which the above components are attached.
Pilot Does Not Light
With air in the gas line, such as when the furnace is Þrst installed or was "OFF" all summer, the pilot ßame may be too lean to ignite on the Þrst few trials. Turn the gas control knob to PILOT position and depress the gas control knob. Hold the gas control knob down to bleed the line;
1.Use lighter rod to light pilot with a match.
If Pilot Does Not Light By Any Means
1.Check gas control knob for being in the "Pilot" position.
2.Checkpilotadjustmentforbeingfullopen(counterclockwise to open).
3.If gas is available in the supply tubing, the pilot oriÞce and/or pilot burner is probably restricted by a spider web. Clean pilot assembly and relight.
If Pilot Does Not Remain "On" After Releasing Gas Control Knob
1.Follow instructions and hold gas control knob down longer and harder.
2.Determine if pilot ßame extends past thermopile; if not, adjust pilot ßame or clean pilot burner.
3.Replace thermopile if millivolt reading is less than 300 millivolts when wall thermostat or remote bulb is turned OFF. Replace gas control if magnet dropout millivolt reading is over 100 millivolts.
Pilot Outage During Normal Operation
1.Check input by manifold pressure gauge or gas meter.
2.Check millivolt output when furnace is in operation. If millivolt output decreases during furnace operation gas control may be defective.
Main Gas Valve Does Not Open When Thermostat Is Turned "On"
1.Check millivolt output of thermopile.
2.Thermostat wires may be broken.
3.Thermostat may be defective.
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