Page 30
WARNING: DO NOT ATTEMPT TO SERVICE THIS UNIT IF YOU ARE NOT A QUALIFIED INSTALLER OR REPAIRMAN.
1.
If the fireplace fails to ignite, a qualified service person should check the fireplace 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
Wire on back of piezo button is loose or off.
Put wire back into place.
button is depressed
Wire from piezo to electrode is loose at electrode.
Reconnect wire.
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 knob in long enough.
Hold in longer.
No spark at piezo.
See problem 1.
3.
Pilot won't stay lit
Not holding black control knob in long enough.
Hold button in longer heat thermocouple.
Thermocouple (or Generator - RF valve) connection
Check connection on valve & tighten if
loose at valve connection.
necessary.
Pilot hood misdirecting pilot flame
Check pilot flame location. Flame must be
from thermocouple (or Generator - RF valve).
burning on generator(s) and thermocouple
(CMB-31).
Refractory panels not positioned
Secure refractory panels with high-temp
against firebox back & sides.
sealant.
WIRING DIAGRAM
MODEL #CMB-31
Figure Q-1
PROBLEM
CAUSE
SOLUTION
4.
Burner won't light
Pilot not lit
Relight pilot
Regulator valve not turned “ON”.
Turn valve to "ON"
Summary of Contents for CAMBRIDGE CMB-31
Page 33: ...Page 31 Warranty Policy...
Page 34: ...Page 32 Warranty Policy...
