TROUBLESHOOTING

STANDING PILOT IGNITION

SYMPTOM

POSSIBLE CAUSE

ACTION

1.

Spark ignitor will

A. Wire disconnected.

A. Open door and check to make sure wire is connected to ignitor.

 

not light pilot after

 

 

B.

Check for spark at electrode and pilot. If no spark and electrode

 

repeated triggering of

B.

Defective ignitor.

 

wire is properly connected, replace pilot assembly.

 

piezo.

 

 

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

 

 

C.

No gas or low gas pressure.

 

sure can be caused by bent lines, restricted lines, low pressure

 

 

 

 

 

line pressure. Consult with plumber or gas supplier.

 

 

D. No Propane/LPG in tank

D. Check Propane/LPG tank. Refill tank.

 

 

 

2. Pilot will not stay lit

A. Defective thermocouple

A. Check that thermocouple flame impinges on thermocouple.

 

after carefully follow-

 

 

 

Clean and/or adjust pilot for maximum flame impingement.

 

ing lighting instruc-

 

 

 

Ensure that the thermocouple connection at the gas valve is fully

 

tions.

 

 

 

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

B.

If thermocouple is producing more than 15 mV, replace faulty

 

 

 

 

 

valve.

 

 

 

 

.

Pilot burning, valve

A. Defective switch, wall

A. Check switch and wire for proper connection. Place jumper

 

knob turned to “ON”,

 

switch, remote control or

 

wires across terminals of switch. If burner comes on, replace

 

switch is turned to

 

wire

 

defective switch.If the switch is OK, repeat the same procedure

 

“ON” or “RS”, but

 

 

 

on remote control If burner comes on, replace remote control.

 

burner will not ignite.

 

 

 

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.

Pilot flame too small

B.

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

 

 

 

 

 

flame.

 

 

C.

Defective or malfunction-

C.

Check thermopile wire connections to make sure all are tight

 

 

 

ing thermopile

 

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

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.

40

54D0700

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Monessen Hearth BDV600, BDV500, BDV300, BDV400 Troubleshooting, Standing Pilot Ignition, Symptom Possible Cause Action
Page 39 Page 41

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