Monessen Hearth 3000 SERIES ユーザーズマニュアル

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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.