Troubleshooting

Millivolt system

Note: Before troubleshooting the system, make sure the gas shutoff valve is ON. The two most common causes of a malfunctioning gas appliance are:

1.Loose wiring connections

2.Construction debris clogging the pilot and/or gas control valve filter

OBSERVED PROBLEMPOSSIBLE CAUSEREMEDY

Pilot will not light

1. No gas supply or shutoff

1.

Check to see if you have gas

 

 

valve is OFF

 

supply

 

2.

Air in gas line

2.

Hold regulator control valve

 

 

 

 

in the PILOT position for 2 to

 

 

 

 

3 minutes to purge air. If you

 

 

 

 

smell gas stop and wait for a

 

 

 

 

few minutes before trying to

 

 

 

 

light the fireplace

 

3.

Construction debris clog-

3.

Remove debris and dirt, in-

 

 

ging pilot orifice

 

spect and clean any other

 

 

 

 

possible obstructions

 

4.

Low gas pressure

4.

Contact your gas supplier

 

5.

Control valve knob is not on

5.

Refer to section on pilot

 

 

the PILOT position

 

lighting

 

6.

Kinked pilot line

6.

Have a qualified technician

 

 

 

 

replace pilot line

 

7.

Bad valve

7.

Replace control valve (see

 

 

 

 

Replacement Parts and Acces-

 

 

 

 

sories, page 19)

Pilot will not stay lit

1.

Loose wiring on thermopile

 

 

to control valve.

 

2.

No millivolt current is being

 

 

sent back to regulator

 

3.

If valve knob and wall switch

 

 

are in the ON position, prob-

 

 

able defective control valve

1.Check wiring connections. Refer to wiring diagrams on page 15

2.Have a qualified technician check millivolts

3.Have a qualified technician replace valve (see Replace- ment Parts and Accessories, page 19)

No gas to burner, although wall

1.

Wall switch wires defective

1.

Check electrical connections

switch and valve are set to the

 

 

 

and wires for continuity

ON position

2.

Thermopile or sensor not

2.

See Pilot will not stay lit,

 

 

generating sufficient voltage

 

above

 

 

 

 

 

Frequent pilot outage

1.

Pilot flame may be too

1.

Clean and adjust pilot flame

 

 

low, causing safety pilot to

 

for maximum flame impinge-

 

 

“drop out”

 

ment on thermopile

Pilot goes out when wall switch is ON

1.Millivolt output on thermo- pile too high

1.Have a qualified technician replace thermopile

55175G

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