TROUBLESHOOTING (cont.) |
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PROBLEM |
| PROBABLE CAUSE |
| REMEDY |
Water will not heat or display shows | 1. Limit Thermostat |
| Remove power from the brewer. | |
HEATING TIME TOO LONG. |
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| Check for continuity through the | |
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| limit thermostat. CAUTION: Do not |
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| eliminate or bypass limit thermo- |
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| stat. Use only replacement part |
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| 29329.0001. | |
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| 2. Temperature probe |
| Remove the probe from the grom- |
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| met and submerge in a water bath |
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| of approximately 70°F (21°C). |
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| Connect an ohmmeter to the pins |
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| in the connector. At 60°F (16°C), |
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| the reading should be 15.3k ± 2k |
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| OHMS, at 70°F (21°C) the reading |
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| should be 11.8k ± 2k OHMS, and |
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| at 80°F (27°C) the reading should |
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| be 9.3k ± 2k OHMS. If the probe is |
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| within these parameters, reconnect |
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| to the control board. |
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| 3. Tank heaters |
| Remove power from the brewer. |
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| Check for continuity through the |
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| tank heaters. If no continuity is |
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| present, check for a wiring problem |
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| (consult wiring schematic), then |
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| replace the tank heater if no wiring |
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| problem is found. |
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| 4. Control Board |
| Remove power from the brewer. |
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| Connect a voltmeter across the |
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| tank heater. Reapply power to the |
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| brewer and refer to testing outputs |
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| on page 48. If the voltage measured |
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| when the tank heater is turned on |
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| is very low or zero, then substitute |
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| a control board know to be good |
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| working order. |
Page 35 | 41581.2 091609 |
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