58
W415-1540 / 08.04.15
EN
16.0 TROUBLESHOOTING
(MILLIVOLT)
SYMPTOM
PROBLEM
TEST SOLUTION
Main burner goes out; pilot
stays on.
Pilot
fl
ame is not large
enough or not engul
fi
ng the
thermopile.
-
Turn up the pilot
fl
ame.
-
Replace pilot assembly.
Thermopile shorting.
-
Clean thermopile connection to the valve. Reconnect.
-
Replace thermopile / valve.
Remote wall switch wire is too
long; too much resistance in
the system.
-
Shorten wire to correct length or wire gauge.
Faulty thermostat or switch.
-
Replace.
Main burner goes out; pilot
goes out.
Refer to “MAIN BURNER GOES OUT; PILOT STAYS ON”
Vent is blocked
-
Check for vent blockage.
Vent is re-circulating
-
Check joint seals and installation
Flexible vent has become
disconnected from appliance.
-
Re-attach to appliance.
-
Cap was not replaced.
Pilot goes out when the
gas knob is released.
The gas valve has an
interlock device which
will not allow the pilot
burner to be lit until
the thermocouple
has cooled. Allow
approximately 60
seconds for the
thermocouple to cool.
System is not correctly purged
-
Purge the gas line.
Out of propane gas.
-
Fill the tank.
Pilot
fl
ame is not large
enough.
-
Turn up the pilot
fl
ame.
Pilot
fl
ame is not engul
fi
ng the
thermocouple
-
Gently twist the pilot head to improve the
fl
ame pattern
around the thermocouple.
Thermocouple shorting / faulty.
-
Loosen and tighten thermocouple.
-
Clean thermocouple and valve connection.
-
Replace thermocouple.
-
Replace valve.
Faulty valve.
-
Replace.
Pilot burning; no gas to
main burner; gas knob
is on ‘HI’; wall switch /
thermostat is on.
Thermostat or switch is
defective
-
Connect a jumper wire across the wall switch terminals;
if main burner lights, replace switch / thermostat.
Wall switch wiring is defective.
-
Disconnect the switch wires & connect a jumper wire
across terminals 1 & 3; if the main burner lights, check
the wires for defects and/or replace wires.
Main burner ori
fi
ce is plugged.
-
Remove stoppage in ori
fi
ce.
Faulty valve.
-
Replace.
Pilot goes out while
standing; Main burner is in
‘OFF’ position.
Gas piping is undersized.
-
Turn on all gas appliances and see if pilot
fl
ame
fl
utters,
diminishes or extinguishes, especially when main burner
ignites. Monitor appliance supply working pressure.
-
Check if supply piping size is to code. Correct all
undersized piping.
Main burner
fl
ame is a
blue, lazy, transparent
fl
ame.
Blockage in vent.
-
Remove blockage. In really cold conditions, ice buildup
may occur on the terminal and should be removed as
required. To minimize this from happening again, it is
recommended that the vent lengths that pass through
unheated spaces (attics, garages, crawl spaces) be
wrapped with an insulated mylar sleeve. Prevent sleeve
from sagging. Contact your local authorized dealer for
more information.
42.3B
!
WARNING
ALWAYS LIGHT THE PILOT WHETHER FOR THE FIRST TIME OR IF THE GAS SUPPLY HAS RUN OUT,
WITH THE GLASS DOOR OPEN OR REMOVED.
TURN OFF THE GAS AND ELECTRICAL POWER BEFORE SERVICING THE APPLIANCE.
APPLIANCE MAY BE HOT, DO NOT SERVICE UNTIL APPLIANCE HAS COOLED.
DO NOT USE ABRASIVE CLEANERS.
Summary of Contents for CX70NT
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