Bunn Juicer JDF-4S User Manual

19

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.

•  Inspection, testing, and repair of electrical equipment should be performed only by qualified service person-

nel.

•  All electronic components have 120-240 volt ac and low voltage dc potential on their terminals. Shorting of 

terminals or the application of external voltages may result in board failure.

•  Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If 

an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a 

terminal or crimp.

•  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.

WARNING  –  •  Exercise extreme caution when servicing electrical equipment.

 

  •  Unplug the dispenser when servicing, except when electrical tests are specified.

 

  •  Follow recommended service procedures.

 

  •  Replace all protective shields or safety notices.

Dispense stations not working.

Note: Cooling failure or excessive 

cabinet  temperatures  for  more 

than 4 hours will result in dispense 

lockout or no dispense.

Note: Reset fault/timer by unplug-

ging unit.

1. Cabinet cooling fan.

2. Bath recirculation pump.

3. Restricted water flow to cabinet 

water coil and bath.

Replace fan (24vdc).

Note: Fan receives power when the 

dispenser is powered.

A) If not running, check refrigera-

tion switch and wiring for proper 

continuity.

B) Check for 120V or 230V AC at 

pump. Replace pump. 

Check for kinked hose.

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