Trouble shooting guide continued – Garland MASTER SERIES HEAVY DUTY RANGES, FRYERS & BROILERS User Manual
Page 33
Part # 4519069 Rev 01(7 Feb 14)
Page 33
TROUBLE SHOOTING GUIDE continued
Fryers
PROBLEM
POSSIBLE CAUSE
SOLUTION
Low millivolt output.
Low pilot fl ame.
Adjust pilot fl ame length.
Clogged pilot orifi ce.
Clean orifi ce.
Low gas pressure.
Increase pressure at regulator.
Manual shut-off partially closed.
Open valve fully.
Flame blowing away from power pile.
Adjust fl ame back to power pile.
Pilot fl ame adjusted too high.
Reduce fl ame by using pilot adjusting
screw on automatic gas valve.
Power pile or thermocouple not
inserted all the way into the pilot.
Insert until fl ame covers 3/8” to 1/2” of
generator thermocouple tip.
Defective generator or thermocouple.
Replace.
Good output, but low reading at valve.
Loose, dirty or corroded terminals.
Clean or tighten as required.
Broken or disconnected lead wire.
Reconnect or replace lead wire.
Output high with main burner off -low
with it on.
Main burner over-gassed.
Reduce pressure at automatic gas valve
to appropriate pressure as specifi ed on
nameplate.
Defective pilot magnet.
Replace automatic gas valve.
Defective Hi-limit.
Replace Hi-limit.
Output good, but pilot magnet will not
hold.
Loose, dirty or corroded terminals.
Clear or tighten as required.
Manual valve not fully open.
Open valve.
Defective pilot magnet.
Replace automatic gas valve.
Defective Hi-limit.
Replace Hi-limit.
Main burner will not come on though
pilot remains lighted.
Loose, dirty or corroded terminals
Clean or tighten as required.
Manual valve not fully open.
Open valve.
Defective automatic gas valve.
Replace automatic gas valve.
Thermostat out of calibration.
Calibrate thermostat.
Defective thermostat.
Replace and calibrate.
Vent line, if used, plugged.
Remove and clean thoroughly.
Burner does not light all the way
around. (Delayed ignition.)
Defl ector bracket out of adjustment.
Re-align bracket.
Ceramic target broken or missing.
Replace target.
One or more orifi ces clogged.
Clean orifi ces.
Flue connected directly to stack.
Remove stack and allow at least 18”
space between fl ue and grease fi lters.