Frymaster FOOTPRINT 8196345 - Manual (Page 40)

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Problem Probable Causes Corrective Action
CM7 display shows
PROBE
FAILURE.
Problem with the temperature
measuring circuitry including the
probe.
This indicates a problem within
the temperature measuring
circuitry. Check resistance of
probe, if faulty replace probe.
CM7 display shows
PROBE
FAILURE with
alarm sounding.
Damaged computer wiring harness or
connector.
Swap the computer wiring harness
with one known to be good. If
problem is corrected replace the
harness.
CM7 display shows
IGNITION
FAILURE.
Open drain valve, failed computer,
failed interface board, open high-
limit thermostat.
Is displayed if the fryer loses its
ability to heat oil. It is also
displayed when the oil
temperature is above 450°F
(232°C) and the high-limit
thermostat has opened, halting the
heating of the oil.
Computer will not
go into program
mode or some
buttons do not
actuate.
Failed computer. Replace computer
CM7 display shows
low temp,
heating indicator
cycles on and off
normally but fryer
does not heat.
A. Failed computer.
B. Damaged computer wiring
harness.
A. Replace computer.
B. Replace computer wiring
harness.
CM7 display shows
igNITION
FAILURE with
alarm sounding.
Heating indicator is
on, but fryer is not
heating.
Drain valve not fully closed. Press the reset switch on the MIB
board. All drain valves should
close. Using the ON/OFF switch,
turn the computer OFF and then
ON again.
CM7 display shows
IGNITION
FAILURE and
alarm sounds, but
fryer operates
normally (false
alarm).
Failed computer.
Replace computer.
CM7 display shows
HI 2 BAD.
Computer in high-limit test mode.
This is displayed only during a
test of the high-limit circuit and
indicates that the high-limit has
failed.