Frymaster BIGLA30 Series Service Manual page 31

Problem
A. Empty JIB.
B. Crumb build up around sensor.
C. Probe temperature lower than setpoint.
D. Oil is too cold.
E. Bad Connection
Frypots won't top off.
F. ATO board power loss
G. Failed transformer/harness.
H. ATO pump failed.
I.
J.
A. Wired incorrectly.
Incorrect vat tops off.
B. Flexlines connected to wrong vat.
A. Filter error exists.
B. Actuator, pump, loose connection, RTD
One vat doesn't top off.
M3000 displays
A.
SERVICE
B.
REQUIRED – ATO
C.
BOARD
Probable Causes
Failed ATO board.
ATO lines/pump plugged
or ATO issue.
Loose or bad fuse
Bad Connection
ATO Board power loss
1-26
Corrective Action
A. Ensure JIB has oil.
Clean crumbs
B.
surrounding sensor.
C. Check to see that fryer is heating. Fryer
temperature must be at setpoint. Check
probe resistance. If probe is bad, replace
the probe.
D. Ensure that the oil in the JIB is above
70°F (21°C).
E. 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.
F. Power to the ATO board has been cut off.
Restore power to the board and clear any
service required errors.
G. Ensure transformer in ATO box is
functioning properly. Check power from
transformer to ATO board. Ensure all
harnesses are plugged securely into place.
H. Ensure pump is operational.
voltage to pump. Replace the pump if
defective.
I. Check for proper voltages using the pin
position chart found on page 1-29. If
ATO found defective, replace ATO
board.
J. Clear the lines/pump.
A. Check wiring.
B. Switch flexlines to correct vat.
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 the computer returns to
OFF or last display.
B. Check actuator, ATO pump, ATO board,
wire connections and RTD.
A. Ensure fuse on right side of ATO box is
secure and good.
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.
from opening
Check