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TROUBLESHOOTING GUIDE
MILLIVOLT SYSTEM
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
PILOT WILL NOT LIGHT
NO GAS SUPPLY OR SHUT-OFF VALVE IS OFF
CHECK TO SEE IF YOU HAVE GAS SUPPLY
AIR IN GAS LINE
HOLD REGULATOR CONTROL VALVE IN THE "PILOT"
POSITION FOR 2 OR 3 MINUTES TO PURGE AIR. IF YOU
SMELL GAS STOP AND WAIT FOR A FEW MINUTES
BEFORE TRYING TO LIGHT THE FIREPLACE.
CONSTRUCTION DEBRIS CLOGGING PILOT ORIFICE.
REMOVE DEBRIS AND DIRT, INSPECT AND CLEAN ANY
OTHER POSSIBLE OBSTRUCTIONS.
LOW GAS PRESSURE.
CONTACT YOUR GAS SUPPLIER.
CONTROL VALVE KNOB IS NOT ON
REFER TO SECTION ON PILOT LIGHTING.
THE
"PILOT"
POSITION.
KINKED PILOT LINE
HAVE A QUALIFIED TECHNICIAN REPLACE PILOT LINE.
BAD VALVE.
REPLACE REGULATOR VALVE
(REFER TO REPLACEMENT PARTS LIST).
PILOT WILL NOT STAY LIT
LOOSE WIRING ON THERMOPILE TO REGULATOR
CHECK WIRING CONNECTIONS.
VALVE. NO MILLIVOLT CURRENT IS BEING SENT
REFER TO WIRING DIAGRAM.
BACK TO REGULATOR.
IF VALVE KNOB AND WALL SWITCH ARE IN
HAVE A QUALIFIED TECHNICIAN REPLACE VALVE.
THE "ON" POSITION-PROBABLE DEFECTIVE
REGULATOR VALVE
NO GAS TO BURNER,
WALL SWITCH WIRES DEFECTIVE
CHECK ELECTRICAL CONNECTIONS
ALTHOUGH WALL SWITCH
AND VALVE ARE SET TO
THE "ON" POSITION.
THERMOPILE GENERATOR OR SENSOR NOT
RE-CHECK PROBLEM "PILOT WILL NOT STAY LIT".
GENERATING SUFFICIENT VOLTAGE.
PREQUENT PILOT OUTAGE
PILOT FLAME MAY BE TOO LOW CAUSING
CLEAN AND ADJUST PILOT FLAME FOR MAXIMUM FLAME
SAFETY PILOT TO "DROP-OUT".
IMPINGEMENT ON THERMOPILE.
PILOT GOES OUT WHEN
MILLIVOLT OUTPUT ON THERMOPILE TOO HIGH.
REPLACE THERMOPILE.
WALL SWITCH IS ON.
SPARK IGNITOR WILL NOT
DEFECTIVE IGNITOR (NO SPARK AT ELECTRODE).
CHECK FOR SPARK AT THE ELECTRODE AND PILOT; IF
LIGHT PILOT AFTER REPEATED
NO SPARK AND ELECTRODE WIRE IS PROPERLY
TRIGGERING OF RED BUTTON.
CONNECTED, REPLACE IGNITOR..
DEFECTIVE PILOT OR MISALIGNED ELECTRODE AT
USING A MATCH, LIGHT PILOT. IF PILOT LIGHTS,
PILOT (SPARK AT ELECTRODE).
TURN OFF PILOT AND TRIGGER THE RED BUTTON
AGAIN. IF PILOT LIGHTS, AN IMPROPER GAS/AIR
MIXTURE CAUSED THE IMPROPER LIGHTING AND A
LONGER PURGE PERIOD IS RECOMMENDED. IF PILOT
WILL NOT LIGHT – CHECK GAP AT ELECTRODE AND
PILOT SHOULD BE 1/8 INCH TO HAVE A STRONG
SPARK. IF OK, REPLACE PILOT.
NO GAS OR LOW GAS
CHECK REMOTE SHUT OFF VALVES FROM FIREPLACE.
PRESSURE.
USUALLY THERE IS A VALVE NEAR THE FIREPLACE
AND SOMETIMES THERE IS A VALVE NEAR THE MAIN.
THERE CAN BE MORE THAN ONE (1) VALVE BETWEEN
THE FIREPLACE AND MAIN.
LOW PRESSURE CAN BE CAUSED BY A VARIETY OF
SITUATIONS SUCH AS BENT LINE, TOO NARROW
DIAMETER OF PIPE OR EVEN LOW LINE PRESSURE.
CHECK FOR KINKED LINES. IF NONE, CONSULT WITH
PLUMBER OR GAS SUPPLIER.
NO L.P. IN TANK.
CHECK L.P. (PROPANE). YOU MAY BE OUT OF FUEL.