Model 691
| In the event of a control system failure, the digital display will show | |
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| an error message which are coded: |
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| and |
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| displayed; and to silence this tone, press any of the product buttons. |
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DISPLAY | CAUSE | PANEL BOARD CORRECTION |
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Control board | Turn switch to OFF position, then turn switch back to ON; | |
| overheating | if display still shows |
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| for signs of overheating behind the control panel; once panel |
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| cools down, the controls should return to normal; if |
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| persists, replace the control |
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Shortening | Turn switch to OFF position, then back to ON; if display | |
| overheating | shows |
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| be checked; once the unit cools down, the controls should |
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| return to normal; if |
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Temperature | Turn switch to OFF position, then turn switch back to ON; | |
| probe open | if display shows |
Temperature | Turn switch to OFF position, then turn switch back to ON; | |
| probe shorted | if display shows |
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High limit | Reset the high limit by manually pushing up on the red reset | |
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| button; if the high limit does not reset, the high limit must be |
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| replaced; call Henny Penny’s Service Department |
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Drain switch | Close the drain using the drain valve handle; if display still | |
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| shows |
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Air pressure switch | Press the timer button to try the ignition process again; and if | |
| failure (stuck closed) | |
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Draft fan or | Press the Timer button to try the ignition process again; and if | |
| air pressure | |
| switch failure |
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| (stuck open) |
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Ignition module | Press the Timer button to try the ignition process again; and if | |
| failure | |
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Modules working | Press the Timer button to try the ignition process again; and if | |
| but no ignition | |
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803 |