6-4
6.2.3 Filtration Problems
Problem
Probable Causes
Corrective Action
Fryer filters after
each cook cycle.
Filter after setting incorrect.
Change or overwrite the filter after
setting by re-entering the filter after
value in Manager Settings, Filter
Attributes in section 1.8 of the
FQ4000 controller manual.
Clean and Filter
won’t start.
Temperature too low.
Ensure fryer is at setpoint before
starting a Clean and Filter.
FQ4000 display
shows FILTER BUSY.
A.
Another filtration cycle or filter pad
change is still in process.
B.
Filter interface board has not
cleared checking system.
A.
Wait until the previous filtration
cycle ends to start another
filtration cycle. Change filter pad
if prompted.
B.
Wait 15 minutes and try again.
Filter pump won’t
start, or pump stops
during filtering.
A.
Power cord is not plugged in or
circuit breaker is tripped.
B.
Pump motor has overheated
causing the thermal overload switch
to trip.
C.
Blockage in filter pump.
A.
Verify that the power cord is fully
plugged in and the circuit
breaker is not tripped.
B.
If the motor is too hot to touch
for more than a few seconds, the
thermal overload switch has
probably tripped. Allow the
motor to cool at least 45 minutes
then press the Pump Reset
Switch (see section 2.1.2 of the
FQ4000 controller manual).
C.
Call your FAS for assistance.
Drain valve or return
valve stays open.
A.
VIB board has failed.
B. Actuator has failed.
Call your FAS for assistance.
FQ4000 display
shows INSERT pan.
A.
Filter pan is not fully set into fryer.
B.
Missing filter pan magnet.
C.
Defective filter pan switch.
A.
Pull filter pan out and fully
reinsert into fryer. Ensure
controller does not display P.
B.
Ensure the filter pan magnet is
in place and replace if missing.
C.
If the filter pan magnet is fully
against the switch and controller
continues to display INSERT
PAN, switch is possibly defective.
Auto filtration, OQS
filter won’t start.
A.
Oil level too low.
B.
Oil temperature is too low.
C.
Filter Pan out.
D.
Filtration in recipe settings is set to
OFF.
E.
Filter relay has failed.
A.
Ensure oil level is at the top oil
fill line (at the top oil level
sensor).
B.
Ensure the oil temperature is at
setpoint.
C.
Ensure controller does not
display P. Ensure the filter pan
is fully seated into fryer. Power
cycle the fryer.
D.
Set filtration in recipes to ON.
E.
Call your FAS for assistance.
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