Bunn CT, CWTF service manual Troubleshooting, Problem Probable Cause Remedy

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.

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

•All electronic components have 120 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.

•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	PROBABLE CAUSE	REMEDY
Brew cycle will not start	1. ON/LOWER Switch is off.	Turn on switch.
	2. No power	(A) Turn on main power switch.
		(B) Check that the power cord is
		securely plugged into outlet.
		(C) Check circuit breakers or
		fuses.
	3. No water	(A) Water lines and valves to the
		brewer must be open.
		(B) Check for plugged water filter
Water is not hot	1. Heater switch turned off.	Turn on switch
Inconsistent beverage level	1. Lime Build-up	(A) Use deliming spring.
		(B) Clean sprayhead. (Page 11)
	2. Water Pressure fluctuating.	Have a pressure regulator In-
		stalled.
Consistently low or high bever-	1. Timer adjustment.	Adjust timer (Page 10)
age level.	Page 16
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