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TROUBLESHOOTING
WARNING: If you smell gas:
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint re-
mover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with
combustion air and create odors.
WARNING: Only a qualified service technician should service and repair heater.
CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/ pilot unit.
Note: All troubleshooting items are listed in order of operation.
PROBLEM
When ignitor button is
pressed in there is no spark
at ODS/pilot.
When ignitor button is
pressed in there is a spark
at ODS/pilot but no ignition.
ODS/pilot lights but flame
goes out when control
knob is released.
POSSIBLE CAUSE
1. Ignitor electrode is positioned wrong or
broken.
2.
Ignitor electrode is not connected to
ignitor cable.
3.
Ignitor cable is pinched or wet.
4.
Broken ignitor cable.
5.
Bad piezo ignitor.
1.
Gas supply is turned off or equipment
shutoff valve is closed.
2.
Control knob not fully pressed in while
pressing ignitor button.
3.
Air in gas lines when installed.
4.
ODS/pilot is clogged.
5.
Gas regulator setting is not correct.
6.
Control knob not in PILOT position.
7.
Depleted gas supply (propane).
1.
Control knob is not fully pressed in.
2.
Control knob is not pressed in long
enough.
3.
Equipment shutoff valve is not
fully open.
4.
Thermocouple connection is loose
at control valve.
5.
Thermocouple damaged.
1.
Replace ignitor.
2.
Reconnect ignitor cable.
3.
Free ignitor cable if pinched by any metal
or tubing. Keep ignitor cable dry.
4.
Replace ignitor cable.
5.
Replace piezo ignitor.
1.
Turn on gas supply or open equipment
shutoff valve.
2.
Fully press in control knob while pressing
ignitor button.
3.
Continue holding down control knob. Re-
peat igniting operation until air is removed.
4.
Clean ODS/pilot (see Care and
Maintenance, page 22) or replace ODS/
pilot assembly.
5.
Replace gas regulator.
6.
Turn control knob to PILOT position.
7.
Contact local propane/LP gas company.
1.
Press in control knob fully.
2.
After ODS/pilot lights, keep control knob
pressed in 30 seconds.
3.
Fully open equipment shutoff valve
4.
Hand tighten until snug, and then tighten
1/4 turn more.
5.
Replace thermocouple.
23
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REMEDY
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Questions and answers
I have owned my ProCom MTB300TBA for more than 5 years without any problems other than cleaning the ignitor by using a compressed gas electronics duster. This is usually necessary when dust accumulates around the pilot which extinguishes the flame preventing the unit from igniting the burner. In addition to this I've noticed that the central part of the burner after lighting surges directly in front of the pilot light causes the flame to reach higher towards the top of the inside of the unit. Which didn't occur at all during the first few years of the units' winter operations. Is this behavior due to a loose connection of the coupler connection to the burner? This hasn't created any reason for concern other than wondering if the burner and the pilot need adjustment, replacement or anything else you might know of that I should have knowledge of. If a picture of the unit while in operation would be helpful, please advise. Thank you in advance for any information you can provide or inform me about which will increase the efficiency, safety and the operation of the unit. Thank you, Richard
I purchased a Procom 20,000 BTU Vent Free Propane Heater. After it was installed, it produced yellow-tipped flames, primarily when working in low mode. I contacted my propane supplier, and they sent a technician who installed a new regulator on my supply tank and adjusted the pressure between 12 to 14. It continued to produce yellow-tipped flames, and emitted an odor. I checked the air supply to the room and it has very good ventilation. The humidity level stays below 30%. I contacted ProCom customer service and described this situation, and they decided to replace the unit, which was purchased from Home Depot. I received and installed the replacement unit, and it is producing yellow-tipped flames, and an odor, exactly the same as the first unit that I purchased. Today, I had a technician from the propane company inspect the tank and regulator, and they confirmed that the pressure was between 12 to 14. The technician told me that the issue is not related to pressure, since he varied the pressure and inspected the unit during the process, and the yellow-tipped flames and odor persisted. Please advise. Sincerely, Mike Krumrine