This brewer is designed to perform a continuous internal diagnosis, and to signal faults by flashing all the lights. In fault mode, warmers, heating element and water fill solenoid are turned “off”, and most keypad functions are disabled.
Error detection (all lights flashing) will occur under two conditions:
•Anytime a temperature in excess of 214ºF is detected.
•Temperature does not change by at least 2ºF within 4 minutes of tank heater being energized (HEAT light on).
To reset the brewer after the fault has been corrected, press and hold the CANCEL key for 3 seconds, or disconnect the brewer from electrical power for three seconds.
ERROR DETECTION
CAUTION
ELECTRIC SHOCK
HAZARD
Live electrical circuits may be exposed while performing these procedures.
These procedures are to be performed by qualified technical personnel only.
642 75872 Owners Manual E.B.C. Airpot /Thermal
| WHAT TO CHECK | DESCRIPTION | CORRECTIVE ACTION |
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| Has the water tank | On initial startup, an attempt to heat a | Tank must be properly filled as |
| been properly filled? | dry tank will be detected as too high a | detailed on page 6. |
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| temperature or insufficient temp rise, or | Check |
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| will trip the high limit. |
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| Has | Brewer may have been started without | Access |
| thermostat tripped | water in the tank, or the temp control | panel. |
| off? | thermostat may require adjustment. | the tank. Use an insulated tool to |
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| push the red button in until it “clicks” |
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| and stays. Reset per above. |
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| Check control board | Brewer will go into error mode | Reset by holding the CANCEL key for |
| and temp probe. | immediately if either the control board | 3 seconds. If lights continue to flash: |
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| or temp probe is defective. | Disconnect temp probe from control |
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| Temp probe electrical resistance is | board. |
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| approximately 30KΩ at room temp, and | a. If lights continue to flash, unplug |
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| Ω | brewer and replace control board. |
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| 2K at boiling. Replace temp probe if | b. If lights stop flashing, unplug |
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| Ω. | |
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| less than 1K | brewer and replace temp probe. |
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| Check power board | Brewer will go into error mode 4 minutes | Reset by holding the CANCEL key |
| and heating element.. | after energizing the heating element if | for 3 seconds. If lights resume |
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| insufficient heat rise is detected. The | flashing after 4 minutes: |
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| heating element is energized by an | Check the voltage across the heating |
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| electronic power board, and protected | element terminals: |
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| by the | a. If no voltage is present, unplug |
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| Heating element should receive full line | brewer and replace power board. |
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| voltage (i.e. 120V, 208V or 240V). | b. If proper voltage is present, |
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| Be sure the | unplug brewer and replace tank |
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| heating element. |
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| Is the brew | The brewer may occasionally go into | See page 15 for temperature |
| temperature properly | error mode if the brew temperature is | adjustment procedure. |
| adjusted? | set too high. |
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