Monessen Hearth 3000 SERIES User Manual
Page 40
T
T
R
R
O
O
U
U
B
B
L
L
E
E
S
S
H
H
O
O
O
O
T
T
I
I
N
N
G
G
38
TROUBLESHOOTING
Standing Pilot Ignition:
SYMPTOM
POSSIBLE CAUSE
ACTION
1.
Spark ignitor will
not light pilot after
repeated triggering
of piezo.
A. Wire disconnected.
Open door and check to make sure wire is connected to
ignitor.
B. Defective ignitor.
Check for spark at electrode and pilot. If no spark and
electrode wire is properly connected, replace pilot assembly.
C. No gas or low gas
pressure.
Check remote/manual shut off valve from fireplace. Low
pressure can be caused by bent lines, restricted lines, low
pressure line pressure. Consult with plumber or gas supplier.
D. No Propane/LPG
in tank
Check Propane/LPG tank. Refill tank
2.
Pilot will not stay
lit after carefully
following lighting
instructions.
A. Defective
thermocouple
Check that thermocouple flame impinges on thermocouple.
Clean and/or adjust pilot for maximum flame impingement.
Ensure that the thermocouple connection at the gas valve is
fully inserted and tight.
Disconnect the thermocouple from the valve, place one
millivolt lead wire on the tip of the thermocouple and the other
meter lead wire on the thermocouple copper lead. Start the
pilot and hold the valve knob in. If the millivolt reading is less
than 15 mV, replace pilot assembly.
B. Defective valve
If thermocouple is producing more than 15 mV, replace faulty
valve.
3.
Pilot burning, valve
knob turned to
“ON”, switch is
turned to “ON” or
“RS”, but burner
will not ignite.
A. Defective switch,
wall switch, remote
control or wire
Check switch and wire for proper connection. Place jumper
wires across terminals of switch. If burner comes on, replace
defective switch. If the switch is OK, repeat the same
procedure on remote control. If burner comes on, replace
remote control.
Place jumper wire across wire at gas valves (terminals marked
TH and TP/TH). If burner comes on, wires are faulty or
connections are bad. Replace wire.
B. Pilot flame too
small
If pilot flame is not close enough to the thermopile, adjust
pilot flame.
C. Defective or
malfunctioning
thermopile
Check thermopile wire connections to make sure all are tight
and that the thermopile is fully inserted into pilot assembly.
Check thermopile with a millivolt meter. Connect leads to TP
and TP/TH terminals on the control valve. If meter reading is
below 325 mV, replace pilot assembly
D. Defective valve
Turn valve knob to “On” and switch to “ON”. Take a reading
at the thermopile leads (TP & TP/TH) on the valve. If the
meter reads greater than 100 mV and the burner does not light,
replace defective valve
4.
Frequent pilot
outage problem.
A. Pilot flame may be
too high or too low,
causing pilot safety
to drop out
Clean and adjust the pilot flame for maximum flame
impingement on thermocouple.