Aif (Automatic Intermittent Filtration) Service Procedures; Aif (Automatic Intermittent Filtration) Troubleshooting - Frymaster FilterQuick FQG30 Service Manual

The system also checks these conditions. The following must be met before jug fill is allowed.

Solenoid closed

Orange fill button pressed longer than 3 sec.

Waste valve closed

Filter Now? Yes/No, Confirm Yes/No, or Skim Vat cannot be displayed

System power cycle (all boards – controllers, MIB, AIF and ATO) after changing setup from JIB to Bulk (use
momentary reset). Ensure reset is pressed and held for at least ten seconds.

No filtration or other filter menu selection can be in process.
Other factors that may not allow fill jug from bulk –

Defective solenoid

Defective switch

Bulk fresh oil pump issue

Bulk fresh oil relay issue
If using multiple fryer systems that are both attached to the bulk fresh oil system, they may not be able to fill both
units at the same time if they have a bulk fresh oil unit with a single head. Some bulk fresh oil units have dual heads
which can fill more than one fryer simultaneously.

1.17 AIF (Automatic Intermittent Filtration) Service Procedures

The AIF (Automatic Intermittent Filtration) board controls
the actuators that open and close the drain and return valve.
The AIF boards are located inside a protective housing
under each frypot (see Figure 15).

1.17.1 AIF (Automatic Intermittent Filtration) Troubleshooting

Problem
Actuator doesn't
function.
Probable Causes
A.
No power to the AIF board.
B.
Actuator is unplugged.
Figure 15
Corrective Action
A.
Check pins 5 and 6 of J2 at the MIB
board. Should read 24VDC. Check
voltage on pins 5 and 6 at the other
end of harness and ensure 24VDC is
present. Continue to check pins 5 and
6 for 24VDC on plugs J4 and J5 on the
AIF boards.
B.
Ensure the actuator is plugged into the
proper connection (J1 for FV return, J3
for DV return and J6 for FV drain and
J7 for DV drain).
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