Part # 138683 (01/08)
Page 27
TROUBLESHOOTING Continued
Fryers
Problem
Possible Cause
Solution
Low millivolt output
Low pilot flame
Adjust pilot flame height
Clogged pilot orifice
Clean pilot orifice
Low gas pressure
Increase gas pressure at regulator
Manual shut off partially closed
Open valve fully
Flame blowing away from pile
Adjust flame properly
Pilot flame adjusted too high
Adjust pilot flame height
Power pile not fully inserted
Insert until flame contacts 1/2-3/8”
Defective generator or
thermocouple
Replace
Good output, but low reading at valve
Loose, dirty or corroded terminals
Clean and/or tighten as required
Broken or disconnected lead wire
Reconnect or replace lead wire
Output high with main burner off – low
when on
Main burner over-gassed
Adjust gas pressure
Draft pulling flame off thermocouple Eliminate draft
Output good, but pilot safety magnet
will not hold
Loose, dirty or corroded terminals
Clean and/or tighten as required
Grease under control on automatic
gas valve, preventing knob from
being pushed fully down
Remove knob and clean
Defective pilot magnet
Replace automatic gas valve
Defective high-limit
Replace high-limit
Pilot is lit, but main burner will not ignite
Loose, dirty or corroded terminals
Clean and/or tighten as required
Manual shut off partially closed
Open valve fully
Defective automatic gas valve
Replace
Thermostat out of calibration
Calibrate thermostat
Defective thermostat
Replace and calibrate
Vent line, (if used), clogged
Remove and clean
Burner does not ignite all the way
around, (delayed ignition)
Deflector bracket out of alignment
Realign bracket
Ceramic target broken or missing
Replace
One or more orifices clogged
Clean as necessary
Draft around fryer
Eliminate draft
Flue connected directly to stack
Remove stack and allow 18” space
between flue and grease filters