Heat-N-Glo SL-550TRS-AUC Installation And Operation Instructions Manual page 33

SYMPTOM
III. Pilot burning, no gas burner,
valve knob "ON", "on-off"
switch "ON".
POSSIBLE CAUSE
B. Defective valve.
A. "ON-OFF" switch or wires de-
fective.
B. Thermopile may not be gener-
ating sufficient millivoltage.
33
CORRECTIVE ACTION
3. Disconnect the thermocouple
from the valve, place one milli-
volt meter lead wire on the tip of
the thermocouple and the other
meter lead wire on the thermo-
couple copper lead. Start the
pilot and hold the valve knob in.
If the millivolt reading is less than
15 mv, replace the thermocouple.
1. If thermocouple is producing
more than 15 millivolts, replace
faulty valve.
1. Check "on-off" switch and wires
for proper connections. Place
jumper wires across terminals at
switch-if burner comes on, re-
place defective switch. If OK,
place jumper wires across switch
wires at gas valve-if burner comes
on, wires are faulty or connec-
tions are bad.
1. If the pilot flame is not close
enough physically to the thermo-
pile, adjust the pilot flame.
2. 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.
3. Check the thermopile with a mil-
livolt meter. Take the reading at
TH-TP & TP terminals of the gas
valve. The meter should read 325
millivolts minimum, while holding
the valve knob depressed in the
pilot position, with the pilot lit,
and the ON/OFF switch in the
OFF position. Replace the faulty
thermopile if the reading is be-
low the specified minimum.