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B. Defective safety circuit
Pilot will not stay lit after
following the lighting
instructions continued
1. Loose
or
defective
connections
1. Check continuity, tighten wiring or
connections, and repair
III. Main burner will not light
A. Valve / Switches
1. Valve control off
1. Turn to ON position
2. Blockage at the burner (line,
orifice, or ports)
2. Check and clean
3. Defective on/off switch.
3. Conduct a continuity test or jumper wire
test and replace if defective
4. Defective
wiring
or
connections
4. Conduct a test with a jumper wire and
repair as required
5. Defective Valve
5. Turn valve and ON/OFF switch to the
ON position. Check with millivolt meter
at terminals TP-TH. Millivolt meter
should read greater then 540 millivolts. If
the reading is OK and the burner does
not come on, replace the gas valve
6. Thermopile
may
not
be
generating sufficient voltage
(750 mV)
6. Recheck using the millivolt meter. The
pilot flame may not be high enough for
the flame to properly engulf the
thermopile. If so, adjust and reset. If
voltage is still insufficient, replace
thermopile
f i r e - p a r t s . c o m
