Bunn T3A, T6A Troubleshooting, Problem Probable Cause Brew cycle will not start, Remedy

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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

Brew cycle will not start

1. No water

 

2. No power or incorrect voltage to

 

the brewer

 

3.External Strainer/ Flow Control

 

(.750 GPM)

Remedy

Water lines and valves to the brewer must be open.

Check circuit breakers or fuses.

(A)Direction of flow arrow must be pointing towards the brewer.

(B)Remove the strainer/flow con- trol and check for obstructions. Clear or replace.

4. (A) ON/OFF Switch (T3)

Refer to Service - ON/OFF Switch

 

for testing. See page 24

(B) Selector Switch (T6)

Refer to Service - Selector Switch

 

for testing. See page 24

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10145

072600

 

 

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Contents Post Office BOX SPRINGFIELD, Illinois Telephone 217 529-6601 FAX 217Warranty IntroductionUser Notices #00831.0000 #00656.0000 #03408.0000 #03409.0000Electrical Hook-Up Electrical RequirementsPlumbing Requirements Initial Timer Adjustment Initial SET-UP Fill & HeatOperating Controls Adjusting Brew VolumesON/OFF Switch T3 only Cleaning Selector Switch T6 onlyStart Switch TEA BrewingRemedy TroubleshootingProblem Probable Cause Brew cycle will not start Probable Cause Remedy TroubleshootingProblem Problem Probable Cause Remedy Dilution cycle will not start Dilution Solenoid ValveDripping from sprayhead Spitting or excessive steamingControl Thermostat Drip-out time too long Beverage overflows dispenser Weak beverage Plumbing Lines Water Supply Tank Heater Dry tea leaves remain in the funnelBrewer is making unusal noises Contents ServiceComponent Access Service Brew Solenoid ValveService Brew Solenoid Valve Solenoid Valve TerminalsBrew Timer Indication must beIf voltage is present as described, proceed to #4 If continuity is not present as described, refer toService Digital Brew Timer Late Models If voltage is as described, proceed to #7Service Digital Brew Timer Late Modelscont Digital Timer WiringControl Thermostat Test Procedure Disconnect the brewer from the power source Dilution Solenoid ValvesSource. The indication must be Dilution TimerClockwise Limit Thermostat With a voltmeter, check the voltage acrossON/OFF or Selector Switch On left or right position WHI/VIOStart Switch Tank Heater 10145 072600 10145 072600 10145 072600
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T6, T6A, T3A specifications

The Bunn T6A, T3A, T6, and T3 are part of a distinguished line of commercial coffee brewers engineered for consistency, efficiency, and top-notch brew quality. These machines are well-suited for cafes, restaurants, and specialty coffee shops where reliability and performance are paramount.

The Bunn T6A is designed to brew large quantities, accommodating high-demand environments. With a capacity of six gallons per hour, this machine can quickly fulfill orders, ensuring that customers receive fresh, hot coffee without delay. It features a programmable touchpad that allows users to customize brew settings, enabling them to fine-tune extraction times and temperatures for various coffee blends. The T6A’s dual-float system provides precise water control, preventing overflow and enhancing safety.

The Bunn T3A is another exceptional model in this lineup, designed for both versatility and speed. It boasts a three-gallon capacity, making it ideal for medium-sized establishments. The T3A is equipped with Bunn's patented SplashGard funnel, which helps protect users from hot water splashes, providing an additional layer of safety. Its advanced brewing technology allows for an optimal brew temperature range, ensuring that coffee is extracted to perfection every time.

The Bunn T6 is similar to the T6A in its heavy-duty construction but focuses on a slightly different brewing capacity. Capable of producing back-to-back brews, the T6 can keep up with high-volume demands. This model features a digital brewer interface, making it user-friendly while providing detailed feedback on the brewing process. Its robust design allows for easy maintenance, ensuring it remains in peak operating condition.

Lastly, the Bunn T3 serves as a compact alternative in the series, suited for locations with limited space but requiring high-quality coffee. The T3 can brew up to three gallons per hour, seamlessly fitting into smaller setups without compromising on performance. Like its counterparts, it features programmable settings and quick brew times, providing flexibility and efficiency.

Together, the Bunn T6A, T3A, T6, and T3 represent a versatile range of commercial coffee brewing solutions. Each model is designed to deliver exceptional coffee, maintain consistent quality, and provide ease of use, making them integral tools for any serious coffee business. Whether high volume or limited space, Bunn caters to diverse needs while upholding the highest standards in coffee brewing technology.
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