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J1C, J1X, & J2X MASTER JET SERIES GAS FRYERS
CHAPTER 6: OPERATOR TROUBLESHOOTING
6.3 Troubleshooting Abnormal Burner Operation
PROBLEM
Main burner will not
come on. Pilot
remains lit.
Main burner does
not light all the way
around.
Fryer is operating
normally, but flames
are rolling out of the
front of the burner.
PROBABLE CAUSES
A. Loose, dirty, or corroded
terminals on gas valve.
B. High resistance in contacts of
thermostat.
C. Thermostat out of calibration.
D. Automatic gas valve defective.
E. Automatic gas valve knob turned
to PILOT position.
A. Rear burner flame deflector
broken off.
B. Burner gas pressure too high or
too low.
C. One or more main burner orifices
clogged.
D. Fryer flue connected directly to
vent hood with a chimney-like
duct.
Obstructed gas valve vent tube.
CORRECTIVE ACTION
A. Clean and tighten terminals on gas
valve and thermostat.
B. Replace thermostat.
C. Calibrate thermostat.
D. Replace gas valve.
E. Turn gas valve knob to ON
position.
A. Install new rear burner flame
deflector.
B. Adjust gas pressure.
J1C & J1X:
Natural Gas – 4 in. W.C. (1.0 kPa).
LP Gas – 10.0 in. W.C. (2.50 kPa).
J2X:
Natural Gas – 3 in. W.C. (.75 kPa).
LP Gas – 8.25 in. W.C. (2.0 kPa).
C. Clean burner orifices and blow
out with compressed air.
D. Remove chimney-like duct and
allow for at least 18" (46 cm)
between flue outlet and vent hood
filters.
Shut the fryer down and clean the gas
valve vent tube in accordance with
the instructions on Page 5-3 of this
manual.
6-2
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Troubleshooting
