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Troubleshooting Steps
Travis Industries
Gas T-Shoot Guide
19203
EPU Defective
If the thermocouple production is adequate (see "Thermocouple Defective"), yet the pilot does not
stay lit when the knob is released, the EPU inside the gas control valve is malfunctioning.
Remedy
Replace the gas control valve.
Thermopile Defective
To check millivolt production form the thermopile, connect the multimeter to the center and lower
posts on the gas control valve. Millivolt production is factory set at approximately
400 millivolts
(with the burner off).
Gas Control Valve
PILOT ADJ
VENT
T
O
L
PI
ON
OFF
HI
LO
AA
AA
AA
AA
NOTE
: leave the
knob on "PILOT"
Make sure the pilot flame contacts the thermopile 3/8" (for 30 seconds) while testing millivolt
production. If it does not, see "Pilot Flame Needs Adjustment". If you can not adjust the pilot to
achieve 200 millivolts, your thermopile may require replacement.
NOTE:
If the main burner is turned on, the millivolt production will appear to drop because the
head coil (the valve that operates the main burner) will draw electricity.
NOTE:
If the heater operates for 1 to 5 minutes, then shuts off, it may be a defective thermopile.
Millivolt production is based upon the difference in temperature between the top and
bottom of the thermopile. A defective thermopile may create sufficient millivolts to keep
the main burner operating for the first minutes of operation. But once the stove warms,
the temperature differential lessens and millivolt production goes down.
NOTE:
When using a thermostat or remote control, the millivolt production may need to be
increased in certain cases (see page 2-3 for pilot adjustment). The thermostat or remote
wire creates electrical resistance in the main burner circuit, making larger millivolt
production necessary to offset the resistance.
Remedy
Replace the thermopile (or pilot assembly).
