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Problem Probable Causes Corrective Action
Frypots won’t top off.
A. Empty JIB.
B. Probe temperature lower than setpoint.
C. Oil is too cold.
D. Bad Connection
E. ATO board power loss
F. Failed transformer/harness
G. ATO pump failed
H. Failed ATO board.
I. ATO lines/pump plugged
A. Ensure JIB has oil.
B. Check to see that fryer is heating.
Fryer temperature must be at setpoint.
Check probe resistance. If probe is
bad, replace the probe.
C. Ensure that the oil in the JIB is above
70°F (21°C).
D. With the computer OFF, press TEMP
button and ensure the ATO software
version appears. If not, the connection
between the AIF and the ATO board
may be bad. Ensure the 6-pin CAN
connectors are tight between AIF (J4
and J5) and ATO (J10) boards.
E. Power to the ATO board has been cut
off. Restore power to the board and
clear any service required errors.
F. Ensure transformer in ATO box is
functioning properly. Check power
from transformer to ATO board.
Ensure all harnesses are plugged
securely into place.
G. Ensure pump is operational. Check
voltage to pump. Replace the pump if
defective.
H. Check for proper voltages using the pin
position chart found on page 1-15. If
ATO found defective, replace ATO
board and clear any errors.
I. Clear the lines/pump.
One vat doesn’t top off.
A. Filter error exists.
B. Actuator, pump, loose connection, RTD
or ATO issue.
A. Clear filter error properly. When
change filter pad YES/NO is displayed,
do NOT press any button until the pan
has been removed for at least thirty
seconds. After thirty seconds have
elapsed, the computer returns to OFF or
last display.
B. Check actuator, ATO pump, wire
connections, RTD and ATO board.
M3000 displays
SERVICE
REQUIRED – ATO
BOARD
A. Loose or bad fuse
B. Bad Connection
C. ATO Board power loss
A. Ensure fuse on right side of ATO box is
secure and good. If the computer
above the ATO box is missing power
check the fuse below the component
box.
B. With the computer OFF, press TEMP
button and ensure the ATO software
version appears. If not, the connection
between the AIF and the ATO board
may be bad. Ensure the 6-pin CAN
connectors are tight between AIF (J4
and J5) and ATO (J9 or J10) boards.
C. Power to the ATO board has been cut
off. Ensure there is correct voltage to
the ATO transformer. Restore power to
the board and clear any service required
errors.