TROUBLESHOOTING
23813-1-0807
Page 21
Service must be performed by a Qualified Installer, Service
Agency, or the Gas Supplier.
GENERAL
All furnaces have been fire-tested to check for
proper operation. This includes main burner flame, pilot flame,
and gas control operation. If the furnace fails to function on initial
installation, it is advisable to re-check the following:
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 Orifice, Thermopile
and Main Burner Orifice
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 first installed
or was "OFF" all summer, the pilot flame may be too lean to ignite
on the first 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. Check pilot adjustment for being full open (counterclockwise
to open).
3. If gas is available in the supply tubing, the pilot orifice 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 flame extends past thermopile; if not,
adjust pilot flame 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.
