Troubleshooting - MHSC PARLOR VENT-FREE PL20 Installation And Operating Instructions Manual

Parlor Vent Free Fireplace
•
Turn appliance OFF and allow to cool
before servicing.
•
Only a qualified service person should
service and repair the heater.
OBSERVED PROBLEM
When ignitor 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 ignitor button is pressed,
there is spark at ODS pilot, but
no ignition.
6
POSSIBLE CAUSE
1. Ignitor electrode positioned wrong.
. Ignitor electrode is broken.
3. Ignitor electrode not connected to ignitor
cable.
4. Ignitor cable pinched or wet. Keep ignitor
cable dry.
5. Broken ignitor cable.
6. Bad piezo ignitor.
1. Appliance burning vapors from paint,
hair spray, glues, etc.
. Gas leak.
3. Initial burn off.
1. Not enough fresh air is available for
ODS/ pilot to operate.
. Low line pressure.
3. ODS/pilot is partially clogged.
4. Defective Thermopile.
5. Restrictions in incoming air flow.
1. Gas leak.
. Control valve defective.
1. Gas supply turned off or manual shutoff
valve closed.
. 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.
NOTE: All troubleshooting items are listed in order of
operation.
REMEDY
1 Replace ignitor.
. Replace ignitor.
3. Reconnect ignitor cable.
4. Free ignitor cable if pinched by any
metal or tubing.
5. Replace ignitor cable.
6. Replace piezo ignitor.
1. Ventilate room. Stop using odor
causing products while heater is
running.
. Locate and correct all leaks.
3. Ventilate room and turn unit on high
until odor is gone. Odor should be
gone after 6 hours of continuous
use.
1. Open window and/or door for ventila-
tion.
. Contact local gas company.
3. Clean ODS/pilot.
4. Check pilot flame, check wire con-
nections, check output, should be
35 milli-volts across TH/TP and TP
Terminals with ON/OFF switches
off.
5. Check for bottom riser on glass door,
sunken fireplace, excessive lava
rock/cinders densely packed against
grate.
1. Locate and correct all leaks.
. Replace control valve.
1. Turn on gas supply or open manual
shutoff valve.
. Turn control knob to PILOT posi-
tion.
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. Replace gas regulator.

TROUBLESHOOTING

90D0093