Monessen Hearth TPB24 - Manual (Page 35)

70D0004 35
TROUBLESHOOTING
If the gas quality is bad, your pilot may not stay lit, the burners may produce soot and
the heater may backfi re when lit. If the gas quality or pressure is low, contact your local
gas supplier immediately.
W
ARNING
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
ODS/pilot lights, but flame
goes out when control knob
is released. 1. Control knob not fully pressed in. 1. Press in control knob fully.
2. Control knob not pressed in long enough. 2. After ODS/pilot lights, keep control knob
pressed in for 30 seconds.
3. Manual shutoff valve not fully open. 3. Fully open manual shutoff valve.
4. Thermocouple connection loose at control
valve.
4. Hand tighten thermocouple connection until
snug, then tighten 1/4 turn more.
5. Pilot flame not touching thermocouple,
which allows thermocouple to cool, causing
pilot flame to go out. This problem could be
caused by either low gas pressure, or a dirty
or partially clogged ODS/pilot.
5. Contact local gas company.
6. Thermocouple damaged. 6. Replace thermocouple.
7. Control valve damaged. 7. Replace control valve.
Burner does not light after
ODS/pilot is lit. 1. Burner orifice is clogged. 1. Burner orifice is clogged.
2. Burner orifice diameter is too small. 2. Burner orifice diameter is too small.
3. Inlet gas pressure is too low. 3. Inlet gas pressure is too low.
Burner backfires during
combustion 1. Manifold pressure is too low. 1. Contact local gas company.
2. Burner orifice is clogged. 2. Clean burner or replace burner orifice.
Slight smoke or odor during
initial operation. 1. Burner orifice is clogged or damaged. 1. Clean burner or replace burner orifice.
2. Burner is damaged. 2. Replace burner.
3. Gas regulator defective. 3. Replace gas regulator.
Logs appear to smoke after
initial operation. 1. Vapors from paint or curing process of logs. 1. Problem will stop after a few hours of
operation. Run the heater with the damper
open if you have one, or open a window for
the first few hours.
2. Log heater is intended to be smokeless. Turn
OFF heater and call qualified service person.
Heater produces a whistling
noise when burner is lit. 1. Turning control knob to HIGH position
when burner is cold.
1. Turn control knob to LOW position and let
warm up for a minute.
2. Air in gas line. 2. Operate burner until air is removed from line.
Have gas line checked by local gas company.
3. Dirty or partially clogged burner orifices. 3. Clean burner or replace burner orifice.
No gas to pilot. 1. LP-regulator shut down due to inlet pressure
too high.
1. Verify LP tank regulator is installed and set at
11" to 13" w.c.
2. Replace regulator on heater.