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SERVICE AND MAINTENANCE SUGGESTIONS
GENERAL : All furnaces have been fire-tested to check for
proper operation. This includes, main burner flame, pilot
flame, fan operation, fan control, limit control and automatic
valve operation. If the furnace fails to function on initial
installation, it is advisable to re-check the following:
1. 115 volts to the junction box.
2. Inlet gas pressure.
3. The 24 volt system.
4. Type of gas being used and that shown on the rating
label.
The Service Department at Empire Comfort Systems, Inc. may
be contacted to assist in servicing furnace.
Servicing the Pilot and Main Burners, Pilot Orifice, Ther-
mocouple, and Main Burner Orifices: Disconnect the gas
supply at the inlet to the control valve. Then remove the burner
door to which the above components are attached.
Servicing The Fan Motor: The upper front panel, the shroud
surrounding the fan blade and fan blade must be removed. See
"Oiling the Motor" paragraph on page 8.
Spark Igniter Does Not Light Pilot: 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 control valve knob to pilot position and
depress the red reset button. Holding the button down continu-
ally to bleed the line;
1. Use lighter rod to light pilot with a match.
2. Use the piezo ignitor at 30 second intervals until it
lights.
If Electrode Does Not Produce Spark:
1. Check wire connections.
2. Check gap for pilot burner to the electrode tip. Should
be between
" and
1/8
be more than
" away from all other metal compo-
1/4
nents.
Page 10
". Electrode wire and tip must
3/16
CALL SERVICEMAN
If Pilot Does Not Light By Any Means:
1. Check valve knob for being in the "Pilot" position.
2. Check pilot adjustment for being full open (counter-
clockwise 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 Knob:
1. Follow instructions and hold button down longer and
harder.
2. Determine if pilot flame extends past thermocouple; if
not, adjust input or clean pilot burner.
3. Replace thermocouple if millivolts read less than 15
millivolts.
Pilot Outage During Normal Operation:
1. Check air inlet tube for a good tight fit at both ends (6"
diameter tube).
2. Check burner door and pilot hole cover for tight seal.
3. Check input by manifold pressure gauge or gas meter.
Main Gas Valve Does Not Open When Thermostat Is
Turned To On:
1. Check for 24 volts to valve by removing one wire and
touching to the SAME TERMINAL it was on. Termi-
nal should have a light spark. DO NOT SHORT
ACROSS TERMINALS, AS IT WILL BURN OUT
THE WALL THERMOSTAT.
2. Thermostat wires at the wall may be shorted, so check
for a faulty thermostat.
3. To check for line voltage to furnace, remove lower front
panel and switch compartment cover and short across two-
terminal fan control to allow fan to operate. (Figure 10)
CAUTION: Label all wires prior to disconnection when
servicing controls. Wiring errors can cause improper and
dangeros operation. Verify proper operation after servicing.
R-1628
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