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BUNN Espress™
ES•2A™/ES•2SA™
12
TROUBLESHOOTING
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 Bunn-O-Matic
Technical Service Department at 1-800-637-8606.
• 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
Equipment will not
operate
Brew cycle will not start
Probable cause
No power or incorrect
voltage
Contactor
Toggle switch (Master
on/off)
No water
Water strainer or filter
Start switch
Solenoid valve
Remedy
Connect the brewer to the power
source. Check the contactor
terminals for proper voltages.
Check circuit breaker/fuse.
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.
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
(semi-automatic version)
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.