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CHAPTER 6: OPERATOR TROUBLESHOOTING
6.2 Troubleshooting Fryers with Solid State (Analog), Digital, or CM III.5
Controllers
PROBLEM
Burner will not
light.
Solid state (analog)
controller power and
trouble lights on, but
heat light is not,
OR
CM III.5 display
shows
.
Unit stays in melt
cycle continuously.
CM III.5 will not go
into programming
mode.
CF SERIES GAS FRYERS
PROBABLE CAUSES
A. Pilot not lit.
B. Drain valve open.
C. No electrical power to unit.
D. No gas being supplied to unit.
E. Failed controller.
Failed controller.
Temperature probe or controller has
failed.
A. Temporary controller malfunction
caused by voltage surge.
CORRECTIVE ACTION
A. Light pilot per instructions in
Chapter 3 of this manual.
B. Verify that drain valve is fully
closed.
C. Verify that unit is plugged in and
that circuit breaker is not tripped.
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.
E. If available, substitute controller
known to be good for suspect
controller. If fryer operates
normally, order replacement
controller from FASC.
If available, substitute controller
known to be good for suspect
controller. If fryer operates
normally, order replacement
controller from FASC.
If available, substitute controller
known to be good for suspect
controller. If fryer operates
normally, order a replacement
controller. If substitution does not
resolve the problem, the most likely
cause is a failed temperature probe.
A. Disconnect unit from electrical
power, wait at least one minute,
reconnect unit to the power
supply and turn controller on.
6-2
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Troubleshooting
