Troubleshooting - Vermont Castings CFX24NV Installation And Operating Instructions Manual

CFX VENT FREE FIREPLACE SYSTEM
WARNING: Turn appliance OFF and allow to cool before servicing. Only a qualifi ed service
person should service and repair the heater.
Note: All troubleshooting items are listed in order of operation.
PROBLEM
When igniter button is
pressed, there is no
spark at ODS/pilot.
Appliance produces
unwanted odors.
Appliance shuts off
during use.
Gas odor even when
control knob is in OFF
position.
When igniter button is
pressed, there is spark at
ODS pilot, but no ignition.
24
POSSIBLE CAUSE
1. Igniter electrode positioned wrong.
2. Igniter electrode is broken.
3. Igniter electrode not connected to igniter
cable.
4. Igniter cable pinched or wet. Keep igniter
cable dry.
5. Broken igniter cable.
6. Bad piezo igniter.
1. Appliance burning vapors from paint, hair
spray, glues, etc.
2. Gas leak.
3. Initial burn off
1. Not enough fresh air is available for ODS/
pilot to operate.
2. Low line pressure.
3. ODS/pilot is partially clogged.
4. Defective Thermopile.
5. Restrictions in incoming air fl ow.
1. Gas leak.
2. Control valve defective.
1. Gas supply turned off or manual shutoff
valve closed.
2. Control knob not in PILOT position.
3. Control knob not pressed in while in
PILOT position.
4. Air in gas lines when installed.
5. ODS/pilot is clogged.
6. Gas regulator setting is not correct.

TROUBLESHOOTING

REMEDY
1 Replace igniter.
2. Replace igniter.
3. Reconnect igniter cable.
4. Free igniter cable if pinched by any
metal or tubing.
5. Replace igniter cable.
6. Replace piezo igniter.
1. Ventilate room. Stop using odor
causing products while heater is
running.
2. Locate and correct all leaks.
3. Ventilate room and turn unit on high
until odor is gone. Odor should be
gone after 2 to 3 hours of continuous
use.
1. Open window and/or door for
ventilation.
2. Contact local gas company.
3. Clean ODS/pilot.
4. Check wire connections. Check output
should be 500 millivolts across TH/
TP and TP Terminals with ON/OFF
switches off.
5. Check for bottom riser on glass door,
sunken fi replace, excessive lava rock/
cinders densely packed against grate.
1. Locate and correct all leaks.
2. Replace control valve.
1. Turn on gas supply or open manual
shutoff valve.
2. Turn control knob to PILOT position.
3. Press in control knob while in PILOT
position.
4. Continue holding down control knob.
Repeat igniting operation until air is
removed.
5. Replace ODS/pilot assembly or get it
serviced.
6. Check incoming pressure. Replace
gas regulator.
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