BUNN Espress™
TROUBLESHOOTING
ES•2A™/ES•2SA™
A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the
•Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.
•Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are energized for more than ten minutes without a supply of water.
•The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help to avoid twists and kinks in the tubing.
•Make certain that all plumbing connections are sealed and electrical connections tight and isolated.
•This brewer is heated at all times unless disconnected from the power source. Keep away from combustibles.
WARNINGS
•Exercise extreme caution when servicing electrical equipment.
•Disconnect the brewer from the power source when servicing, except when specified.
•Follow recommended service procedures.
•Replace all protective shields and safety notices.
Problem | Probable cause |
Equipment will not | No power or incorrect |
operate | voltage |
Remedy
Connect the brewer to the power source. Check the contactor terminals for proper voltages. Check circuit breaker/fuse.
Contactor | When on/off toggle (master) is |
| turned on , pilot lamp on base |
| should light up and the contactor |
| should energize and pull in. If |
| contactor does not pull in, unplug |
| brewer and check coil for continuity. |
| If open, replace contactor. |
| Toggle switch (Master |
| on/off) |
Brew cycle will not start | No water |
| Water strainer or filter |
Start switch
Must be in the on position. Pilot lamp will light.
Check plumbing and shut off valves.
Direction of flow arrows must be pointing toward the brewer.
Remove the strainer and/or filter cartridge and check for obstructions. Clear or replace.
Disconnect power supply and check terminals of switch for continuity
Solenoid valve | Check voltage at terminals. If |
| voltage is present when the start |
| switch is pressed, disconnect power |
| supply and check coil terminal for |
| continuity. If there is continuity, |
| solenoid is defective. Replace |
| solenoid. |
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