Troubleshooting - Bunn VPR VPS Operating & Service Manual

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 personnel.
• This brewer is heated at all times. Keep away from combustibles.
WARNING – • Exercise extreme caution when servicing electrical equipment.
• Unplug the brewer when servicing, except when electrical tests are specified.
• Follow recommended service procedures
• Replace all protective shields or safety notices
PROBLEM
Water is not hot
Spitting or excessive steaming

TROUBLESHOOTING

PROBABLE CAUSE
1. Limit Thermostat or Thermal
Cut-Off
CAUTION - Do not eliminate or
bypass limit thermostat/thermal
cut-off. Use only BOM replace-
ment part.
Limit Thermostat - #29329.0001
Thermal Cut-off - #04776.0000
2. Control Thermostat
3. Tank Heater
1. Lime Build-up
CAUTION - Tank and tank
components should be delimed
regularly depending on local
water conditions. Excessive
mineral build-up on stainless
steel surfaces can initiate corro-
sive reactions resulting in
serious leaks.
2. Control Thermostat
Page 5
REMEDY
Refer to Service - Limit Thermo-
stat or Thermal Cut-Off for
testing procedures. See page 10
or 13
Refer to Service - Control Ther-
mostat for testing procedures.
See page 9
Refer to Service - Tank Heater
for testing procedures. See page
12
Inspect the tank assembly for
excessive lime deposits. Delime
as required.
Refer to Service - Control Ther-
mostat for testing procedures.
See page 9
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