Page 37
Owner’s Manual - S42
ENGLISH
7.7 Control System Troubleshooting (Millivolt)
PROBLEM OBSERVED POSSIBLE CAUSE
CORRECTIVE MEASURE
Spark ignitor will not
light pilot after repeated
triggering of
piezo ignitor button.
Defective ignitor
(no spark electrode)
Check for spark at electrode and pilot; if no spark and electrode
wire is properly connected, replace ignitor.
No gas or low gas
pressure.
Check remote shut off valves from fireplace. Usually there is a
valve near the main. There can be more than one valve
between the fireplace and main.
Low pressure can be caused by a variety of situations such as
a bent line, too narrow diameter of pipe, or low line pressure.
Consult with plumber or gas supplier.
No Propane in tank.
Check Propane tank. Refill tank.
Pilot will not stay lit
after carefully following
lighting instructions.
Defective
thermocouple.
Check that pilot flame impinges on thermocouple. Clean and/or
adjust pilot for maximum flame impingement.
Ensure the thermocouple connection at the gas valve is fully
inserted and tight (hand tight plus 1/4 turn). Faulty thermocouple
if reading is below specified minimum of 15 millivolts.
Disconnect the thermocouple from the valve, place one
millivolt meter lead wire on the end of the thermocouple and
the other millivolt meter lead wire on the thermocouple copper
wire. Start the pilot and hold the valve knob in. If the millivolt
reading is less than 15 millivolt, replace the thermocouple.
Defective valve.
If thermocouple is producing more than 15 millivolts, replace
faulty valve.
Pilot burning, no gas
to burner, valve knob
“ON”, REMOTE/ OFF/ON
switch “ON.”
(continued on the next
page)
REMOTE/OFF/ON
switch, wall switch,
remote control or
wires defective.
Check REMOTE/OFF/ON switch and wires for proper
connections. Place jumper wires across terminal at switch.
If burner comes on, replace defective switch. If OK, place
jumper wires across switch wires at gas valve-if burner comes
on, wires are faulty or connections are bad.
Thermopile may
not be generating
sufficient millivolts.
If the pilot flame is not close enough physically to the
thermopile, adjust the pilot flame.
Be sure the wire connections from the thermopile at the gas
valve terminals are tight and the thermopile is fully inserted
into the pilot bracket.
