LOVGeneration II Technical Reference

Troubleshooting the Manual Interface Board (MIB)

Problem

Probable Cause

Corrective Action

 

1. Filter pan out of position.

1. Ensure filter pan is fully inserted into fryer.

 

2. Oil Level is too low.

 

2. Ensure oil level is above the oil level sen-

 

3. Ensure MIB board is not in

 

sor.

 

manual mode.

 

3. Ensure MIB board is in “A” automatic

Auto filtration

4. Ensure MIB cover is not

mode.

won’t start.

damaged and pressing

4. Remove and replace cover and see if filtra-

 

against buttons.

 

tion will start.

 

5. Filter relay has failed.

 

5. Replace filter relay with part number 807-

 

6. AIF disable is set to YES,

 

4482 24VDC relay.

 

blue light doesn’t light.

 

6. Set AIF disable in Level 1 to NO.

 

7. Filter motor thermal switch

 

7. Press filter motor thermal switch.

 

is tripped.

 

8. Ensure AIF clock is set to disabled.

 

8. AIF clock enabled.

 

 

MIB display shows

An error has occurred and

See MIB display diagnostics on page 46 for

something other

displayed character indicates

explanation.

than an “A” or vat

error.

 

number.

 

 

 

 

 

 

No power present

Transformer has failed in left

Check output on the left transformer in left

component box; should read 24VAC. If not

at the MIB board

component box.

replace transformer.

 

 

 

 

 

 

 

Press and hold reset button in top right cor-

 

 

ner for five seconds. The drain, return and

MIB will not clear

Error remains in non-volatile

manual/auto LEDS will illuminate and the MIB

error.

memory.

will reset and clear any remaining errors from

 

 

memory. Allow 60 seconds to reset. If an error

 

 

still exists, then another issue exists.

 

 

 

 

 

Ensure the CAN bus system is terminated at

 

 

BOTH ENDS (on the M3000 connector J6 and

 

 

on the ATO board connector J9) with a resistor

 

 

equipped 6-pin connector.

 

 

• Unplug and reseat all wiring harnesses in

 

 

CAN system. Resistance between pins

 

 

2 and 3 on the CAN network connectors

MIB indicates in-

 

should be 120 ohms.

 

• Check software version numbers on all

correct number of

 

 

M3000 computers and ensure all display

vats.

 

 

an AIF version. If an AIF version is miss-

 

 

 

 

ing, the AIF board may be missing power.

 

 

Check pins 5 and on J4 and J5 of the af-

 

 

fected AIF board for proper voltage.

 

 

• The locator pin in J2 of the AIF board is

 

 

either loose or in the incorrect position.

 

 

See the chart on pages 47 of this manual

 

 

for proper pin position.

 

 

 

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Frymaster M3000 manual Troubleshooting the Manual Interface Board MIB, Problem Probable Cause Corrective Action

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