6-4
6.3 Troubleshooting Fryers with Thermostat Controls
PROBLEM Probable Causes Corrective Action
Burner does not
light.
A. Pilot is not lit.
A. Light pilot per instructions in
Chapter 3 of this manual.
B. Drain valve not fully closed.
B. Verify drain valve is fully closed.
C. No electrical power to unit.
(Other than millivolt unints.)
C. Verify that unit is correctly
plugged in and that circuit breaker
is not tripped.
D. No gas being supplied to unit.
D. Verify that the gas line
connections are properly
connected, that any cutoff valves
between the fryer and the gas
main are open, and that the main
gas cutoff valve is open.
Unit will not go into
melt cycle or stays in
melt cycle
continuously.
Failed melt cycle switch.
Defective melt cycle circuit board
Melt cycle switch or melt-cycle
circuit board must be replaced. Call
FAS.
Fryer never reaches
frying temperature.*
Failed thermostat or thermostat out of
calibration.
Isolating the problem requires
additional troubleshooting beyond the
scope of operator troubleshooting.
Call FAS.
*NOTE: The tolerance band of the Sunne thermostat is +20°F (+6°C) and -20°F (-11°C).
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