Grindmaster GRIND'N BREW 21H - Manual (Page 15)

Grind’n Brew® Coffee Systems Page 15
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CAUTION: Unplug power cord from outlet before cleaning or servicing the unit.
Troubleshooting Guide
The following procedures must be performed by a qualified service technician.
Problem Possible Cause Remedy
Weak coffee • Not enough coffee used
• Grind is too coarse
• Water not hot enough
• Too much water used (half brews)
• Coffee bed has dry areas
• Set to portion more coffee.
• Readjust grind to a finer grind.
• Check spray temp, should be
greater than 185°F.
• Adjust brew time at the controller.
• Spray deflector broken or missing.
Replace.
Strong coffee • Too much coffee used • Readjust coffee portion.
Bitter coffee • Grind is too fine • Coarsen grind setting.
Grounds in coffee • Paper filter collapsed during
brewing
• Use proper filter.
Brew basket overflowed • Too much coffee
• Coffee ground too finely
• Double batching • Use no more than 3 1/2 oz. of coffee.
• Coarsen grind.
• You must dump old coffee and use
fresh new filter for each brew.
Unpleasant taste • Water tank or brew basket needs
cleaning
• Clean, sanitize (de-lime).
• Refer to Regular Maintenance
section.
Brewer will not brew • Basket has not been changed • Remove basket, replace filter,
reinstall.
Grinder will not start when start
button is pushed • Main power switch turned off
• No power to outlet
• Basket out
• Circuit breaker has tripped
• Basket has not been changed
• Turn main power switch, on located
on back of unit (left side from front) on.
• Check outlet with lamp or radio to
verify outlet has power.
• Ensure basket is in position.
• Reset circuit breaker (located on
back of unit) by pushing the reset
button in until you hear a click.
• Remove basket, replace filter,
reinstall.
Grinder runs or hums but no
coffee is dispensed • Shear disc is broken
• Obstruction in opening of auger
assembly (on dual bean units)
• Obstruction in opening to grinding
chamber
• Slide valve is bending
• Blown fuse on controller board
(Dual bean only)
• Replace shear disc. See Shear
Disc Replacement section.
• Remove hopper and clear
obstruction.
• Remove hopper and clean
obstruction.
• Check for free operation of slide valve.
Adjust solenoid mount or slide valve
mount as required. Make sure white
slide valve gasket is not touching
moving parts.
• Check for blown fuse and replace
with 5 Amp fuse.
Quantity of coffee dispensed
each throw is not the same • Defective timer in controller
• Slide valve is binding
• Check the length of time grinder
runs with watch.
• Remove upper assembly and clean
obstruction.
• Check for free operation of slide
valve. Adjust solenoid mount or
slide valve mount as required.
Make sure white slide valve gasket
is not touching moving parts.