L20-406 Rev 7 (01/17) Page 26
6.5
FILTER TROUBLESHOOTING CHART
PROBLEM
POSSIBLE CAUSES
CORRECTIVE ACTIONS
Filter pump does not activate
The filter pump circuit breaker has
tripped.
Reset the filter pump circuit
breaker.
The thermal overload on the pump
motor has tripped.
Reset the thermal overload on the
motor.*
Oil/shortening is draining slowly or
not at all from the fry pot.
Drain valve is closed.
Follow the procedures in this manu
-
al to open drain valve through user
interface on the controller. (auto-
matic models).*
Drain valve is not fully open
Pull blue handle out completely
(manual models only).
Defective drain valve.
Contact Authorized Service
Company.
Drain is plugged with debris.
Use the clean out rod to clear the
debris from the drain opening.*
Oil/shortening is returning to the fry
pot slowly or not at all.
Excessive debris in the filter pan/
dirty filter envelope.
Clean the filter pan/replace the filter
envelope.*
Pump strainer is clogged.
Turn the pump off and remove and
clean the pump strainer.*
Filter pan assembly is not properly
installed/fitler pickup assembly is
not completely pushed in.
Check filter pan for proper installa
-
tion/push filter pickup in
completely.*
O-rings not sealing on pickup tube
Check and replace O-rings as
needed.*
Excessive bubbling occurs in fry pot
while oil is being returned.
Pick up tube screen in the filter pan
is not tight.
Tighten the tube screen on the filter
pickup assembly.*
Pump strainer cap is loose or
missing.
Tighten/replace the pump strainer
cap.*
Filter pan is not properly installed/
filter pickup is not completely
pushed in.
Check filter pan for proper installa
-
tion/push filter pickup in
completely.*
Oil/shortening is cloudy when re
-
turned to tank.
Filter envelope is torn/damaged.
Replace the filter envelope.
Low oil/shortening temperature
Cloudiness should disappear when
oil/shortening is heated.
Drain valve is closed, controller
displays “Draining”.
Blue drain valve is not completely
pushed in.
Push blue drain valve handle in
completely (manual models only).
Improperly adjusted or defective
drain switch.
Contact Authorized Service
Company.
TROUBLESHOOTING
