Monessen Hearth SD30PV Installation & Operating Manual page 15

CONDITION
Pilot lights but flame goes out when
Control Knob is released.
Pilot flame is lifting.
Pilot flame is weak - does not touch
Thermocouple.
ST121a
JUV
Pilot flame wrong 2
9/25/00 djt
Pilot lights but Main Burner does
not.
Main Burner shuts off and Pilot
flame goes out while in operation.
15
A. Control Knob not fully depressed or
held in long enough.
B. Gas supply line shut-off valve is not
fully open.
C. Thermocouple connection is loose
at the Control Valve.
D. Pilot flame does not touch the Ther-
mocouple.
This can be caused by:
A) Incorrect gas pressure, and/or
B) other conditions that should be
Thermopile
identified only by a qualified service
technician.
Thermo-
couple
E. Thermocouple is damaged.
F. Control Valve is damaged.
A. Gas supply line shut-off valve is not
fully open.
B. Foreign material is blocking Burner
ports.
C. Main Burner orifice is clogged.
D. Thermostat or remote switch not
activated on JUVS.
E. Bad Thermopile.
A. Insufficient fresh air.
B. Incorrect inlet supply pressure.
Monessen • Sundance VF Installation Manual_R1 • 04/17
POSSIBLE CAUSE
Correct LP Pilot Flame.
ST674
RUVSOD
Pilot flame 2
7/24/01 djt
SOLUTION
Depress Control Knob fully and hold in
for a full 30 seconds.
Fully open gas supply line shut-off
valve.
Inspect and tighten securely.
1. Call local gas supplier. Adjust inlet
supply pressure to specification:
NG; 5.5" w.c.-14.0"w.c. LP; 11.0"
w.c.-14.0"w.c.
2. Call local gas service technician.
Call local gas service technician.
Call local gas service technician.
Correct NG Pilot Flame.
Fully open gas supply line shut-off
valve.
Inspect and clear debris away from
Burner port
Call local gas service technician.
Set thermostat to higher temperature
or check remote switch.
Call local gas service technician.
Determine that adequate ventilation
exists to provide sufficient fresh
air. Open a window or provide
additional ventilation. (See Fresh Air
Requirements)
Call local gas supplier. Adjust inlet
supply pressure to specification: NG;
5.5" w.c.-14.0"w.c. LP; 11.0" w.c.-
14.0"w.c.
3-90-733069