BUNN Espress™
Problem
Brew cycle will not start (cont.)
Water is not hot or long recovery time.
TROUBLESHOOTING |
| Model ES•1A™ | |
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Probable cause |
| Remedy | |
Solenoid valve | Check voltage at terminals. If voltage is | ||
| present when the dose switch is pressed, | ||
| disconnect power supply, remove wires | ||
| from coil terminals and check coil termi- | ||
| nal continuity. If there is continuity re- | ||
| place solenoid. | ||
Pump | When start switch is pressed, pump should | ||
| turn on immediately. If this dies not hap- | ||
| pen, check voltage at terminal block on the | ||
| pump. If correct voltage is present, use a | ||
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| shaft on the rear end of the motor to see if | ||
| the pump itself is locked up. If the shaft | ||
| does not turn, replace pump assembly. | ||
Solenoid valve | Remove the solenoid valve and clear it of | ||
| any obstructions. Rebuild or replace the | ||
| valve if necessary. | ||
Limit thermostat(s) | Disconnect power supply , remove all wires | ||
| check across limit terminals for continuity. | ||
| If no continuity, replace limit thermostat(s). | ||
Tank heater | Check tank heater terminals for correct | ||
| voltage. If voltage is present and machine | ||
| is not heating properly, replace tank heater. | ||
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