18
TROUBLE SHOOTING (CONT’D)
SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
3. Pilot burning, no
A. Damper control lever in
1. Set damper control lever
gas burner, valve knob
closed position
to open position.
“ON”, “ON/OFF” switch
“ON”.
B. “ON/OFF” switch or
1. Check ON/OFF switch
wires defective
and wires for proper connections.
Place jumper wires across
terminals 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.
C. Thermo generator
1. re-check symptom #2
may not be generat-
ing sufficient milli-
2. Pilot flame not physically close
voltage. (325 m.v.)
enough to thermo-generator.
D. Defective valve
1. Turn valve knob to “ON”,
Place ON/OFF switch to “ON”
Check with millivolt meter at
generator terminals. Millivolt
meter should read greater than
100 m.v. If the reading is OK,
and the burner does not come
on, replace the gas valve.
E. Plugged burner orifice
1. Check burner orifice for
stoppage and remove.
F. Wall switch or wires
1. Follow corrective action in A.1
defective
above; check switch and wiring.
Replace where defective.
4. Pilot and Main Burner
A. High Limit Switch is
1. Allow unit to cool. Then repeat
go out while in operation
defective or has reached
lighting instructions.
its maximum temperature
2. If above does not allow for
ignition, check high limit switch.
Place jumper lines across high
limit switch. If you can re-ignite
the pilot your high limit switch
is defective. Replace high limit
switch before using.
B. No L.P. in tank
1. Check L.P. tank. You may be
of fuel.
C. Bad Thermogenerator
Replace if necessary.
