Heat & Glo SL-550TV-D Owner's Manual page 36

Troubleshooting (continued)
Symptom
3. ...Continued c. Defective valve.
d. Plugged burner orifi ce.
e. Wall switch or wires are
defective.
4. Frequent pilot a. Pilot fl ame may be too
outage problem. high or too low, or blowing
out (high pressure), causing
pilot safety to drop out.
5. The pilot and a. No LP in tank.
main burner ex-
tinguish while in
b. Inner vent pipe leaking
operation.
exhaust gases back into the
system.
c. Glass too loose and air
tight packet leaks in corners
after usage.
d. Bad thermopile or thermo-
couple.
e. Improper vent cap instal-
lation.
6. Glass soots. a. Flame impingement.
b. Improper air shutter set-
ting.
c. Debris around air shutter.
7. Flame burns a. Insuffi cient oxygen being
blue and lifts off supplied.
burner.
36
Possible Cause
Heat & Glo • SL-550 / 750 / 950TV-D • 2053-985 Rev. J • 4/07
Corrective Action
Turn the valve knob to the ON position. Place the ON/OFF
switch in the ON position. Check the millivolt meter a the ther-
mopile terminals. The millivolt meter should read greater than
125mV. If the reading is acceptable, and if the burner does not
come on, replace the gas valve.
Check the burner orifi ce for stoppage. Remove stoppage.
Follow the corrective action in Symptom and Possible Cause 1.a
above. Check the switch and wiring. Replace where defective.
Clean thermocouple and adjust the pilot fl ame for maximum
fl ame impingement. Follow lighting instructions carefully.
Check the LP (propane) tank. Refi ll the fuel tank.
Check venting system for damage. Replace/repair improperly
assembled pipe sections.
Replace glass panel assembly.
Replace if necessary.
Check for proper installation and freedom from debris or block-
age.
Adjust the log set so that the fl ame does not excessively impinge
on it.
Adjust the air shutter located on the control panel.
Inspect the opening at the base of the burner. NO MATERIAL
SHOULD BE PLACED IN THIS OPENING.
Ensure that the vent cap is installed properly and free of debris.
Ensure that the vent system joints are tight and have no leaks.
Ensure that no debris has been placed at the base of, or in the
area of the air holes in the center of the base pan beneath the
burner.
Ensure that the glass is tightened properly on the unit, particu-
larly on top corners.