16
TrOUBLESHOOTING
15
TrOUBLESHOOTING
TrOUBLESHOOTING
Water overflow from brew basket
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Paper filter is not high enough and grounds are flowing over and plugging brew basket (use higher filter)
We suggest purchasing Bunn Brand Filters.
Excessive Steam
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Inlet water line connected to hot water supply (connect to cold water).
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Water pressure is too low, below 30 psi (increase water pressure).
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Spray head is plugged (remove spray head, and clean or replace).
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Water flow is too low, confirm by running a full carafe and checking volume. If water level in carafe is low,
call for technical service.
Taste Not Acceptable
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Quality or Quantity of coffee is not high enough (purchase better quality coffee)
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Spray head is plugged and water is boring hole in grounds (clean or replace spray head)
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Check temperature inside of a full carafe of water. It is possible heater is not working properly or thermostat
sensor is not working properly.
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Check volume of water on a full carafe setting. If it is overfilling and temperature is wrong, call for technical service.
Brewer turning on and off during cycle
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The brewer turns on and off the heater to control the water temperature. The amount depends on many factors
(inlet water temperature, water flow rate, heat wattage, supply voltage).
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Excessive on and off will also result in excessive steam. See excessive steam for more information.
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Clicking noise: This is temperature control and it is normal operation.
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Brewing light flashing: IRD problem.
Water temperature cold or luke warm
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Carafe not keeping coffee hot long enough. Consider if you are brewing a full pot or half pot. Half pot will not keep
coffee hot as long as the inner wall of carafe is heated by incoming coffee fluid. Pre-heat carafe for better and longer
performance of a half pot.
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Check supply voltage is maybe is too low, below low 115 VAC (increase supply voltage).
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Water flow rate too high, confirm by running 2-3 pots of water first then call for technical service.
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Heater failed, call for technical service.
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Internal electrical connection failed, call for technical service.
Carafe or Mug not detected (flashing brew light)
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IRD cannot detect flat black or clear glass mug (change mug color)
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IRD window is dirty (wipe with moist towel and dry)
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Mug not close enough to IRD (move farther into brewer)
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IRD is not set properly, call for technical service.
Water dripping from spray head
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Spray head plugged (replace or clean spray head)
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Normally, some water will drip from the spray head shortly after brewing
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Slight valve leak (debris inside valve, disconnect water and reconnect, run 1-2 full cycles of water in carafe to
dislodge debris and check)
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Valve leak permanent, call for technical service.
Water dripping down walls of carafe area
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Spray head plugged (replace or clean spray head)
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Spray head leak around threads, (remove spray head, clean and re-install for tight fit)
Coffee not staying warm
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Possible carafe vacuum failure (if carafe is warm to touch, replace carafe)
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Preheat carafe before brewing coffee especially if used for half pot. (run brew cycle without filter or coffee)
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Check volume of water by running a full cycle of water without coffee. If carafe overfills call for technical service.
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Check voltage to coffee maker.
Water leak from back of brewer
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Check quick connect (push connectors together firmly and slightly twist)
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Poly line leak at brewer, call installer to repair.
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Valve connection leak, call for technical service.
