Monessen Hearth BDV600 User Manual

40 

1.  Spark ignitor will 

not light pilot after 
repeated triggering of 
piezo.

 2.  Pilot will not stay lit 

after carefully follow-
ing lighting instruc-
tions.

.  Pilot burning, valve 

knob turned to “ON”, 
switch is turned to 
“ON” or “RS”, but 
burner will not ignite. 

A. Wire disconnected.

B. Defective ignitor.

C.  No gas or low gas pressure.

D.  No Propane/LPG in tank

A. Defective thermocouple

B. Defective valve

A.  Defective switch, wall 

switch, remote control or 
wire

B.  Pilot flame too small

C.  Defective or malfunction-

ing thermopile

D. Defective valve

A.  Open door and check to make sure wire is connected to ignitor.
B.   Check for spark at electrode and pilot. If no spark and electrode 

wire is properly connected, replace pilot assembly. 

C.  Check remote/manual shut off valve from fireplace. Low pres-

sure can be caused by bent lines, restricted lines, low pressure 
line pressure. Consult with plumber or gas supplier. 

D.  Check Propane/LPG tank. Refill tank.

A.  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.   If thermocouple is producing more than 15 mV, replace faulty 

valve.

A.  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 connec-
tions are bad. Replace wire.

B.   If pilot flame is not close enough to the thermopile, adjust pilot 

flame.

C.   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.   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 175 mV and the burner does not light, replace 
defective valve.