Instructions / Assembly

Troubleshooting
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
A. Generator producing insufficient millivolts. Check the pilot flame. It must impinge on the generator.
Be sure the generator is fully inserted in the bracket. Make
sure the pilot lighting door is tightly closed.
B. Generator defective. Check generator with millivolt meter. Take reading at
generator terminals of valve with pilot burning and
thermostat contacts closed. The reading should be 140
millivolts or more.
C. Loose or dirty generator connections at gas valve. Clean and/or tighten connections at valve.
D. Grounded thermostat lead wire. Remove thermostat lead wires from valve terminals. If the
pilot now stays lit, trace the thermostat wiring circuit for a
ground. May be grounded to the furnace, gas supply, nails
or staples.
1. Pilot will not stay lit after
carefully following
lighting instructions.
E. Defective gas valve. Replace the gas valve after the above is verified.
A. Valve not turned to “ON” position after lighting the
pilot.
Turn the gas valve knob to the "ON" position.
B. Thermostat not turned to a position calling for
heat.
Set the thermostat to a position calling for heat.
C. Plugged burner orifice. Check - clean or replace.
D. Improperly wired or broken thermostat wires.
Defective thermostat.
Check the connections at the valve terminals. Jumper
across the thermostat terminals on the valve. If the valve
operates, check the thermostat wires.
E. Pilot generator may not be generating sufficient
milli volts to open valve.
See 1A and 1C above.
2. Pilot burning - no gas to
the main burner.
F. Defective valve. Replace the gas valve after above is verified.
A. Tubes not properly installed. Check the vent tube and the air inlet tube. Follow the
installation instructions. Be sure the joints are tight and
both tubes are in place. Use only the tubes furnished. Do
not extend the tubes beyond original length.
3. Burner comes "ON" but
goes "OFF" after
operating for no
apparent reason.
B. Furnace may be overrated. Check for high pressure at the valve. See rating plate for
specified min./max. supply pressure. Check the burner
orifice.
A. Thermostat location. Check the thermostat location. It should not be in the path
of warm air discharge from the furnace, near a lamp or
above a T.V. or stereo set.
4. Furnace operates, but
turns "OFF" before room
temperature is attained.
B. Defective thermostat. Check the thermostat calibration or replace.
A. Furnace may be too small for space being heated. Check heat calculations. 5. Furnace not producing
sufficient heat.
B. Furnace not burning at full rate. Check for low gas pressure. Check the burner orifice.
A. Thermostat wiring defective. Thermostat lead wires may be shorted together, by a nail
or staple. Check by removing thermostat leads from the
valve terminals.
B. Thermostat location. Check the thermostat location. If on an outside wall or
there is a hole in the wall behind the thermostat causing
cold air to contact the thermostat. Relocate the thermostat.
C. Defective thermostat. Check the thermostat calibration or replace.
6. Furnace operates, but
will not shut "OFF" when
room temperature is
attained.
D. Dirt under the valve seat or valve stuck open. Replace the valve.
A. Pilot flame may be low or blowing (High), causing
the safety to drop out.
Adjust pilot flame. Check vent tube and air inlet tube. Be
sure pilot lighting door is closed. Pilot orifice or aerating
hole may be plugged (check for spiders, webs or other
material).
7. Pilot outage problem.
B. Broken or no gaskets on control or pilot
observation doors.
Clean and replace.
A. Delayed ignition - pilot flame may be too low. Adjust pilot flame. 8. Abnormal operation.
B. Expansion noise ticking. Casing may be distorted by being fastened to an uneven
wall. Vent tube and air inlet tube may be in a bind with a
vent cap assembly. Be sure the hole through the wall is
correct and parts fit without binding.
A. Housing rattling. Tighten blower screws.
B. Blower dirty. Clean blower wheel.
9. Noisy Blower.
C. Blower wheel bent. Straighten or replace.
A. Fan switch not set. Select fan speed. 10. Blower does not run.
B. Check bearings. Add oil as outlined in blower instructions.