Frymaster OCF30 Series, Service & Parts Manual

Page: 34 / 102

1-28
Problem Probable Causes Corrective Action
Frypots won’t top off.
A. JIB out of oil
B. Supply line from JIB is clogged.
C. Probe temperature lower than setpoint.
D. Temperature in supply line or JIB is too
low.
E. Crumb build up around sensor
F. ATO board power loss
G. Failed solenoid.
H. ATO pump failed or over tightened.
I. Failed transformer/harness.
J. Failed ATO board.
K. Top-off manifold solenoid failed
closed.
L. Jumper missing in ATO board 4 and 5
battery units
A. Ensure the JIB is not out of oil and
supply line is in the JIB. Replace JIB
and press the

button when
prompted to reset top off system.
B. Remove supply line from pump and
blow air through line towards JIB.
C. Check to see that fryer is heating.
Fryer temperature must be at least
300°F (149°C). Check probe
resistance. If probe is bad, replace the
probe.
D. Ensure oil is above 70°F (21°C).
E. Clean crumbs from opening
surrounding sensor.
F. Power to the ATO board has been cut
off. Restore power to the board and
switch all controllers off and on again
to readdress system.
G. Check solenoid to see if functioning
properly.
H. Ensure pump is operational. Check
voltage to pump. Replace the pump if
defective.
I. Ensure transformer in ATO box is
functioning properly. Check power
from transformer to ATO board.
Ensure all harnesses are plugged
securely into place.
J. Check for proper voltages using the
pin position chart found on page 1-31.
If ATO found defective, replace ATO
board.
K. A pressure switch opens in the pump
with excessive pressure in the top-off
manifold, shutting down the pump.
Clear or replace solenoid.
L. Jumper in J4/J5 missing on ATO #2
board in pins 7 & 8.
One vat tops off but
other vats fail to top
off.
A. Failed solenoid
B. Loose wire connection.
A. Check power to the pump. A hot
pump suggests a failed solenoid.
B. Ensure all wiring harnesses are
securely connected to ATO board and
solenoids.