Problem | Probable Causes | Corrective Action | ||||||
CM7 display shows | Problem with the temperature | This indicates a | problem | within | ||||
the | temperature | measuring | ||||||
PROBE | measuring circuitry including the | |||||||
circuitry. | Check | resistance of | ||||||
FAILURE. | probe. | |||||||
probe, if faulty replace probe. | ||||||||
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CM7 display shows |
| Swap the computer wiring harness | ||||||
PROBE | Damaged computer wiring harness or | with one known to be good. If | ||||||
FAILURE with | connector. | problem is corrected replace the | ||||||
alarm sounding. |
| harness. |
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| Is displayed if the fryer loses its | ||||||
CM7 display shows |
| ability to heat oil. It is also | ||||||
Open drain valve, failed computer, | displayed | when | the | oil | ||||
IGNITION | failed interface board, open high- | temperature | is | above | 450°F | |||
FAILURE. | limit thermostat. | (232°C) and the | ||||||
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| thermostat has opened, halting the | ||||||
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| heating of the oil. |
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Computer will not |
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go into program |
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mode or some | Failed computer. | Replace computer |
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buttons do not |
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actuate. |
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CM7 display shows |
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low temp, | A. Failed computer. | A. Replace computer. |
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heating indicator |
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cycles on and off | B. Damaged computer wiring | B. Replace computer wiring | ||||||
normally but fryer | harness. | harness. |
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does not heat. |
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CM7 display shows | Drain valve not fully closed. | Press the reset switch on the MIB | ||||||
igNITION |
| board. | All | drain | valves | should | ||
FAILURE with |
| close. Using the ON/OFF switch, | ||||||
alarm sounding. |
| turn the computer OFF and then | ||||||
Heating indicator is |
| ON again. |
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on, but fryer is not |
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heating. |
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CM7 display shows |
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IGNITION |
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FAILURE and |
| Replace computer. |
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alarm sounds, but | Failed computer. |
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fryer operates |
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normally (false |
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alarm). |
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CM7 display shows |
| This is displayed only during a | ||||||
Computer in | test of the | |||||||
HI 2 BAD. | indicates that the | |||||||
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| failed. |
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