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GFS SERIES TUBE FRYERS SERVICE
OPERATOR’S MANUAL 1182026 REV 2PAGE 23
SERVICE
Troubleshooting
Problem Likely Cause
Burners do not come on Gas supply to unit off.
Combination gas valve is in “OFF” or “PILOT” position.
Pilot not ignited.
Thermostat not “ON.”
Pilot will not stay ignited Combination gas valve is in “OFF” position.
Pilot gas not adjusted properly.
Gas supply to unit off.
Bad thermopile.
Dirty thermopile connections at combination gas valve or high limit.
Bad magnet assembly in combination gas valve.
Clogged orifice.
Draft condition.
Air in gas line.
Improper ventilation system.
Oil excessively hot.
Pilot produces carbon deposits Unit connected to wrong gas supply.
Pressure not adjusted correctly.
Pilot gas not adjusted correctly.
Burners produce carbon deposits Wrong size orifices.
Connected to wrong gas supply.
Pressure not adjusted correctly.
Flue obstructed.
NOTE: Vibrations or shock caused by shaking or pounding baskets on top surface or by slamming door may
cause Hi-Limit Control Switch to open. If this condition persists, additional cushioning may be added to the
rubber grommets supporting this control to absorb these shocks.