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56131H
31
TROUbLESHOOTING
WARNING: Turn off heater, disconnect power if applicable and
let cool before servicing. Only a qualified service person should
service and repair heater.
CAUTION: Never use a wire, needle, or similar object to clean
pilot. This can damage pilot unit.
Note: The two most common causes of malfunctioning gas appliances are loose wiring con-
nections and construction debris clogging pilot and/or control valve filter.
Note: Before troubleshooting the system make sure gas shut off valve is open.
MILLIVOLT SYSTEM
REMEDY
1..Check. to. see. if. you. have.
gas.supply
..Hold. control. valve. in. the.
PILOT. position. for. . to. 3.
minutes.to.purge.air..If.you.
smell.gas.stop.and.wait.for.
a.few.minutes.before.trying.
to light the fireplace
3. Remove debris and dirt,
inspect.and.clean.any.other.
possible.obstructions
4..Contact.your.gas.supplier
5..Refer. to. section. on. pilot.
lighting
6. Have a qualified technician
replace.pilot.line
7..Replace.control.valve.(see.
Replacement Parts and Ac-
cesssories
, page 34)
8..Tighten. thermocouple. or.
replace
1..Check. wiring. connection..
Refer. to.
Wiring Diagrams
,
page.33
1..Check. electrical. connec-
tions
..Recheck.problem.
Pilot Will
Not Stay Lit
1. Clean and adjust pilot flame
for. maximum. flame. im-
pingement.on.thermopile
1..Replace.thermopile
POSSIbLE CAUSE
1. No gas supply, or shutoff
valve.is.OFF
..Air.in.gas.line
3..Construction. debris. clog-
ging pilot orifice
4..Low.gas.pressure
5..Control.valve.knob.is.not.on.
the.PILOT.position
6..Kinked.pilot.line
7..Bad.valve
8..Bad.thermocouple.or.loose.
connection
1..Loose.wiring.on.thermopile.
to.regulator.valve..No.mil-
livolt.current.being.sent.to.
regulator
1..Wall. switch. wires. defec-
tive
..Thermopile. generator. or.
sensor.not.generating.suf-
ficient voltage
1. Pilot flame may be too low,
causing.safety.pilot.to.“drop.
out”
1..Millivolt. output. on. thermo-
pile.too.high
ObSERVED PRObLEM
Pilot.will.not.light
Pilot.will.not.stay.lit
No gas to burner, although wall
switch.and.valve.are.set.to.the.
ON.position
Frequent pilot outage
Pilot.goes.out.when.wall.switch.
is.on