TROUBLESHOOTING GUIDE
NOTE: The millivolt board includes the following items: Valve, generator, pilot assembly, piezo, electrode, rocker
switch, burner, orifice and orifice holder. If any of these items are defective, contact your dealer for the
appropriate repair / replacement procedures to follow.
WARNING:
DO NOT ATTEMPT TO SERVICE THIS UNIT IF YOU ARE NOT A QUALIFIED INSTALLER OR REPAIRMAN.
1. If the unit fails to ignite a qualified service person should check the unit installation.
2. It is imperative that the control compartment, burner and circulation air passageways of the unit be kept
clean. This is necessary to provide adequate combustion and ventilation air.
3. All of the working parts of this unit can be removed at one time. Before removing millivolt board, check for
loose wires.
PROBLEM
CAUSE
SOLUTION
1. No spark when piezo
Piezo wire connection at valve
Push wire back into place.
button is depressed
is loose or off.
Wire from piezo to electrode is
Reconnect wire.
loose at electrode.
Electrode moved out of position.
Realign electrode with 1/8"
space between it & the pilot.
2. Pilot won't light
Gas shut off.
Turn Gas ON.
Gas line not purged.
Hold black control knob in long enough
to purge line.
Not holding black control
Hold in longer.
knob in long enough.
No spark at piezo.
See problem #1.
3. Pilot won't stay lit
Not holding black control
Hold button in longer to
knob in long enough.
heat thermocouple.
Thermocouple connection loose
Check connection on valve
at valve connection.
and tighten if necessary.
Pilot hood misdirecting pilot flame
Check pilot flame location.
from thermocouple.
Flame must be burning on
generator and thermocouple.
Refractory panels not positioned
Secure refractory panels with
against firebox back & sides.
high-temp sealant, especially
around the intake duct.
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