TROUBLESHOOTING (cont.) |
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PROBLEM |
| PROBABLE CAUSE |
| REMEDY |
Water flows into tank continuously | 1. Refill valve |
| Foreign material lodged in valve, | |
with power removed from brewer. |
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| holding it in open state. | |
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| 2. Refill probe or sensitivity set- |
| Check the sensitivity setting. Refer |
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| ting |
| to the REFILL function on page |
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| 27. If the left three digit number |
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| is less than the right number, the |
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| machine “thinks” it is full and the |
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| refill valve should be off. If the left |
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| number is larger than the right, then |
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| the refill valve will automatically be |
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| turned on to fill the tank. The right |
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| number is the threshold setting and |
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| can be adjusted to compensate for |
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| extreme water conditions: very pure, |
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| low conductance water requires a |
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| higher setting, while high mineral |
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| content, high conductance water |
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| requires a lower setting. Note that |
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| the left number changes from a high |
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| value when water is NOT touching |
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| the refill probe to a low valve when |
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| water IS touching the probe. For |
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| best operation, the right number |
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| should be set to a value midway |
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| between these low and high num- |
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| bers. Before changing the setting, |
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| confirm that the refill probe is free |
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| of scale buildup and the connection |
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| to it is secure. |
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| 3. Control Board |
| Substitute a control board known |
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| to be in good working order. |
Page 51 | 40119 071107 |
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