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Problem Probable Causes Corrective Action<br />
Frypots won’t top off.<br />
One vat doesn’t top off.<br />
M3000 displays<br />
SERVICE<br />
REQUIRED – ATO<br />
BOARD<br />
A. Empty JIB.<br />
B. Probe temperature lower than setpoint.<br />
C. Oil is too cold.<br />
D. Bad Connection<br />
E. ATO board power loss<br />
F. Failed transformer/harness<br />
G. ATO pump failed<br />
H. Failed ATO board.<br />
A. Filter error exists.<br />
B. Actuator, pump, loose connection, RTD<br />
or ATO issue.<br />
A. Loose or bad fuse<br />
B. Bad Connection<br />
C. ATO Board power loss<br />
1-14<br />
A. Ensure JIB has oil.<br />
B. Check to see that fryer is heating.<br />
Fryer temperature must be at setpoint.<br />
Check probe resistance. If probe is<br />
bad, replace the probe.<br />
C. Ensure that the oil in the JIB is above<br />
70°F (21°C).<br />
D. With the computer OFF, press TEMP<br />
button and ensure the ATO software<br />
version appears. If not, the connection<br />
between the AIF and the ATO board<br />
may be bad. Ensure the 6-pin CAN<br />
connectors are tight between AIF (J4<br />
and J5) and ATO (J10) boards.<br />
E. Power to the ATO board has been cut<br />
off. Restore power to the board and<br />
clear any service required errors.<br />
F. Ensure transformer in ATO box is<br />
functioning properly. Check power<br />
from transformer to ATO board.<br />
Ensure all harnesses are plugged<br />
securely into place.<br />
G. Ensure pump is operational. Check<br />
voltage to pump. Replace the pump if<br />
defective.<br />
H. Check for proper voltages using the pin<br />
position chart found on page 1-15. If<br />
ATO found defective, replace ATO<br />
board and clear any errors.<br />
A. Clear filter error properly. When<br />
change filter pad YES/NO is displayed,<br />
do NOT press any button until the pan<br />
has been removed for at least thirty<br />
seconds. After thirty seconds have<br />
elapsed, the computer returns to OFF or<br />
last display.<br />
B. Check actuator, ATO pump, wire<br />
connections, RTD and ATO board.<br />
A. Ensure fuse on right side of ATO box is<br />
secure and good. If the computer<br />
above the ATO box is missing power<br />
check the fuse below the component<br />
box.<br />
B. With the computer OFF, press TEMP<br />
button and ensure the ATO software<br />
version appears. If not, the connection<br />
between the AIF and the ATO board<br />
may be bad. Ensure the 6-pin CAN<br />
connectors are tight between AIF (J4<br />
and J5) and ATO (J9 or J10) boards.<br />
C. Power to the ATO board has been cut<br />
off. Ensure there is correct voltage to<br />
the ATO transformer. Restore power to<br />
the board and clear any service required<br />
errors.
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