TROUBLESHOOTING

TROUBLESHOOTING

STANDING PILOT IGNITION

SYMPTOM

POSSIBLE CAUSE

ACTION

 

 

 

 

1.

Spark ignitor

A. Wire disconnected.

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

 

will not light

 

 

B.

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

 

pilot after

B.

Defective ignitor.

 

wire is properly connected, replace pilot assembly.

 

repeated trig-

C.

No gas or low gas pressure.

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

 

gering of piezo.

 

 

 

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

A. Defective thermocouple

A. Check that thermocouple flame impinges on thermocouple.

 

stay lit after

 

 

 

Clean and/or adjust pilot for maximum flame impingement.

 

carefully fol-

 

 

 

Ensure that the thermocouple connection at the gas valve is fully

 

lowing lighting

 

 

 

inserted and tight.

 

instructions.

 

 

 

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.

 

 

 

 

3.

Pilot burn-

A. Defective switch, wall switch,

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

 

ing, valve

 

remote control or wire

 

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

 

knob turned to

 

 

 

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

 

“ON”, switch

 

 

 

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

 

is turned to

 

 

 

Place jumper wire across wire at gas valves (terminals marked

 

“ON” or “RS”,

 

 

 

TH and TP/TH). If burner comes on, wires are faulty or connec-

 

but burner will

 

 

 

tions are bad. Replace wire.

 

not ignite.

B.

Pilot flame too small

B.

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

 

 

 

 

 

flame.

 

 

C.

Defective or malfunctioning ther-

C.

Check thermopile wire connections to make sure all are tight

 

 

 

mopile

 

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

4.

Frequent pilot

A. Pilot flame may be too high or too

A. Clean and adjust the pilot flame for maximum flame impinge-

 

outage prob-

 

low, causing pilot safety to drop

 

ment on thermocouple.

 

lem.

 

out

 

 

5.

The pilot and

A. Inner vent pipe leaking exhaust

A. Check for flue product leak. Replace defective pipe section.

 

main burner

 

gases back into system

 

 

 

extinguish

B.

Horizontal vent improperly

B. Check horizontal-venting piping is running upward 1/4" per

 

while in opera-

 

pitched

 

foot. Do not run the pipe level or downward.

 

tion

C.

Improper vent cap installation

C. Check for proper installation and freedom from debris or block-

 

 

 

 

 

age.

 

 

 

 

 

 

36

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Page 36
Image 36
Monessen Hearth SBV400, SBV500, BBV400 manual Troubleshooting, Standing Pilot Ignition

SBV400, BBV400, SBV500 specifications

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