Troubleshooting - Monessen Hearth TPB18 Installation And Operating Instructions Manual

TROUBLESHOOTING

Note: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM POSSIBLE CAUSE
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.
34
Turn appliance OFF and allow to cool before
servicing. Only a qualifi ed service person
should service and repair the heater.
1. Ignitor electrode positioned wrong.
2. 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.
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 flow.
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.
REMEDY
1 Replace ignitor.
2. 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.
2. 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 ventilation.
2. Contact local gas company.
3. Clean ODS/pilot.
4. Check wire connections. Check output should
be 500 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.
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.
70D0004