Bunn H5E H5X service manual Problem Boils Excessively Fills Cup

Page 12

SERVICE (cont.)

Electronic Controls (cont.)

7.Reconnect the pink wire to terminal 5 of the elec- tronic control assembly.

8.Loosen the compression fitting, remove the probe from the tank lid, and inspect it for mineral depos- its. Replace it if necessary. Keep the exposed ends of the probe away from any metal surface of the dispenser.

9.Check the voltage across terminals 1 & 4 of the electronic control assembly with a voltmeter. Con- nect the dispenser to the power source. The indi- cation must be:

a.) 100 to 120 volts ac for 100 to 120 volt models or

b.) 200 to 240 volts ac for 200 to 240 volt models after a delay of approximately 5 seconds.

10.Touch the screw head end of the probe to the dis- penser housing. The indication must be 0.

11.Move the probe away from the dispenser housing. The indication must again be:

a.) 100 to 120 volts ac for 100 to 120 volt models or

b.) 200 to 240 volts ac for 200 to 240 volt models after a delay of approximately 5 seconds.

12.Disconnect the dispenser from the power source.

Temperature Control Flow Charts (cont.)

H5X THERMOSTAT

PROBLEM: Boils Excessively - Fills Cup

If voltage was present as described, reinstall the probe, the sensing function of the system is operating prop- erly.

If voltage was not present as described, check the pink probe wire and the green ground wire for continuity and/or replace the probe.

Temperature Control Test Procedure

1.Disconnect the dispenser from the power source.

2.Check the voltage across terminals 3 & 4 of the electronic control circuit board with a voltmeter. Connect the dispenser to the power source.The in- dication must be:

a.) 100 to 120 volts ac for 100 to 120 volt models or

b.) 200 to 240 volts ac for 200 to 240 volt models.

3.Disconnect the dispenser from the power source.

If voltage was present as described, proceed to #4.

If voltage was not present as described, refer to the Wiring Diagram and check the dispenser wiring har- ness.

4.Connect the dispenser to the power source and place the tank heater switch in the “ON” position.

5.Observe the red indicator on the electronic control circuit board.

6.Disconnect the dispenser from the power source.

H5E THERMOSTAT

PROBLEM: Boils

Drain cup

Retry

Red Light On While

Boiling

?

No

Yes

Replace Steam Sensor

Drain cup

Retry

Red Light On While

Yes

 

Boiling

 

?

 

No

 

Replace Control Assembly

Disconnect Blue Wire From

Control Board Pin 7

Retry

Still Boiling

?

No

Finished

Yes

Replace Control Assembly

Disconnect Blue Wire From

Control Board Pin 7

Retry

Still Boiling

?

No

Yes

Replace Triac Assembly

Check For Split

Tank Heater

Still Boiling

Yes

?

 

No

 

Replace Triac Assembly

Check For Split

Tank Heater

Replace Control Assembly

Replace Control Assembly

12

10420 011599

 

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Contents Bunn Contents WarrantyIntroduction User Notices Electrical Requirements Plumbing RequirementsElectrical Hook-Up Cleaning Wall Mounted InstallationInitial SET-UP Draining the DispenserTroubleshooting Problem Probable Cause RemedyTroubleshooting Problem Probable Cause Water boils continuously Temperature control Lime build-upDeposits. Delime as required Dispenser is making unusual noisesService Component AccessLiquid Level Control Flow Charts LocationGeneral This system controls the liquid level and water tem Service Electronic Controls Liquid Level Control Test ProcedureProblem Boils Excessively Fills Cup Service Electronic Controls Wiring Connections Adjustments 5A. to Increase the TemperatureService Limit Thermostat Test ProcedureLocation Limit thermostat is located on the tank lid Service Safety Overflow Switch SwitchService Solenoid Valve Solenoid ValveService Tank Heater Location Tank heater is located in the tank lidCheck for continuity across the tank heater termi- nals Wiring Diagrams Volts a CWiring Diagrams Schematic Wiring Diagram H5E Volts a C

H5E H5X specifications

The Bunn H5E and H5X coffee brewers are renowned for their high-quality brewing capabilities, designed to meet the demands of both commercial and specialty coffee environments. These brewers stand out due to their innovative features, reliable performance, and user-friendly designs, making them a preferred choice for cafes, restaurants, and other establishments.

One of the primary features of the Bunn H5E and H5X models is their high-efficiency brewing system. These machines utilize a digital brewing control that ensures precise water temperatures and accurate brew times. This technology allows baristas to achieve optimal extraction from coffee grounds, resulting in a consistent, flavorful cup of coffee every time. The machines are equipped with a stainless-steel hot water tank, allowing for rapid brewing and serving for high-volume coffee demands.

The H5E model focuses on versatility in brewing methods. It can accommodate a wide range of coffee types, from traditional drip coffee to specialty brews. With its adjustable brew basket size, users can easily switch between smaller and larger batches, making it suitable for various business sizes and needs. Additionally, the H5X variant features a high-volume design, perfect for busy environments where efficiency and speed are crucial.

Both models incorporate advanced technology such as the Cold Brew Activation feature, allowing users to make cold brew coffee efficiently. The programmable settings enable baristas to customize brewing parameters according to their specific coffee recipes, providing the ability to create unique flavor profiles that cater to customer preferences.

Durability is another significant characteristic of the Bunn H5E and H5X brewers. Built with heavy-duty materials, these machines are designed to withstand the rigorous demands of a high-traffic environment. They also feature an easy-to-clean design, ensuring that maintenance is fast and straightforward.

In summary, the Bunn H5E and H5X coffee brewers are optimized for efficiency, adaptability, and durability, making them ideal for any coffee-serving establishment. Their innovative brewing technologies and user-friendly features empower baristas to deliver exceptional coffee while minimizing downtime, ensuring that every customer enjoys a perfect cup of coffee crafted to perfection.
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