Frymaster OCF30ATOG Service & Parts Manual page 40

Problem
Controller displays
CLOSE DRAIN
VALVE.
Controller displays
ERROR RM SDCRD
Controller
displays TEMP
PROBE FAILURE.
Controller displays
PROBE FAILURE
with alarm sounding.
Controller displays
HEATING
FAILURE.
Controller will not go
into program mode or
some buttons do not
actuate.
Controller displays
low temp, heating
indicator cycles on and
off normally but fryer
does not heat.
Controller displays
HEATING
FAILURE with alarm
sounding. Heating
indicator is on, but
fryer is not heating.
Controller displays
HEATING
FAILURE and alarm
sounds, but fryer
operates normally
(false alarm).
Controller displays HI
2 BAD.
Controller displays
software for only 3000
or ATO board.
Probable Causes
Drain valve is open or switch is out of
adjustment or failed.
Defective SD Card
Problem with the temperature measuring
circuitry including the probe.
Damaged controller wiring harness or
connector.
Open drain valve, failed controller, failed
interface board, open high-limit
thermostat.
Failed controller.
A. Failed controller.
B. Damaged controller wiring harness.
Drain valve not fully closed.
Failed controller.
Controller in high-limit test mode.
Loose or damaged harness
Corrective Action
Ensure all drain valves are completely
closed and that microswitches are
adjusted and working.
Replace card with another card.
This indicates a problem within the
temperature probe circuitry.
resistance of probe. If faulty, replace
probe.
Swap the controller wiring harness
with one known to be good. If
problem is corrected replace the
harness.
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.
Replace controller
A. Replace controller.
B. Replace controller wiring harness.
Ensure all drains are fully closed.
Using the ON/OFF switch, turn the
controller OFF and then ON again.
Replace controller.
This is displayed only during a test of
the high-limit circuit and indicates that
the high-limit has failed.
Check that all harnesses between 3000's
and ATO are secure and no pins are
pushed out or broken.
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Check