Bunn H5E, H5X, DV manual Flashes, Problem Probable Cause 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 – 240 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 dispenser is heated at all times. Keep away from combustibles.

WARNING

Exercise extreme caution when servicing electrical equipment.

Disconnect dispenser from the power source when servicing, except when electrical tests are specified.

Follow recommended service procedures

Replace all protective shields or safety notices

FAULT CODES

When a fault occurs (failure to the unit) the POWER lamp will flash to identify the problem.

Flashes

Description of Failure

1Temperature Sensor (short)

2Temperature Sensor (open)

3Refill Fault (continuous refill for 15 minutes)

4Heater Fault (heater relay on for 120 minutes)

5Boil Thermistor (short) H5X/H10X only

6Boil Thermistor (open) H5X/H10X only

Problem

Probable Cause

Remedy

Equipment will not operate.

1. No power or incorrect voltage

(A) Check the terminal block for the cor-

 

 

rect voltage. It should be:

 

 

a.) 100 to 120 volts ac across the black

 

 

and white terminals for 100 to 120 volt

 

 

models or,

 

 

b.) 200 to 240 volts ac across the red and

 

 

black terminals for 200 to 240 volt models

 

 

or,

 

 

c.) 230 volts ac across the red and black

 

 

terminals for 230 volt models.

 

 

(B) Check circuit breakers or fuses.

4

42311 071310

 

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Contents H5E/DV PC Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents 19-23Problem Probable Cause Remedy FlashesProblem Probable Cause Water boils continuously Temperature control Noises Water supply Ready indicator will not lightLime build-up Deposits. Delime as requiredComponent Access H5E/DV-PC/X Component Access H10XElectronic Controls Liquid Level Control Flow ChartsLocation Liquid Level Control Test Procedure Service Electronic ControlsService H5X Thermostat Replace the electronic control board Test Procedure Service Limit ThermostatLocation Limit thermostat is located on the tank lid Service Safety Overflow Switch Safety Overflow WiringService Solenoid Valve Late Models If voltage was present as described, proceed to #5Service Solenoid Valve Early Models Location Tank heater is located in the tank lid Service Tank HeaterCheck for continuity across the tank heater termi- nals Service Steam Sensor Thermistor Thermistor PositionService Dispense Valve PC Only Location Dispense Valve is located behind control panelSingle Phase 230V AC 2 Wire + GND Wire + GND Schematic Wiring Diagram H5E/H5X Wire + GND Single Phase
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DV, H5E, H5X specifications

The Bunn H5E and H5X coffee machines represent a leap forward in brewing technology, specifically tailored for commercial use. Both models focus on delivering high-quality coffee while maximizing efficiency, making them ideal choices for busy cafés and restaurants.

The Bunn H5E features a unique 5-liter dual tank system, which allows for faster brewing times and reduces wait periods for customers. This dual tank setup facilitates the simultaneous preparation of multiple coffee types, catering to a diverse clientele. The H5X, on the other hand, is equipped with advanced electronic controls that permit precise temperature adjustments to ensure that the ideal brewing conditions are maintained, enhancing flavor extraction.

One of the standout features of both models is the patented BrewOptimized Technology. This technology helps maintain optimal water temperature and consistent flow rates throughout the brewing process, ensuring that each cup of coffee meets the high standards expected in commercial settings. Additionally, the units utilize a patented stainless steel brew basket that enhances durability and simplifies cleaning, making maintenance less of a chore for busy staff.

Another significant characteristic of the H5E and H5X is their programmable settings, which allow operators to customize brewing parameters according to their specific preferences or customer needs. This flexibility means that establishments can experiment with various coffee profiles, ensuring that they serve only the best products to their patrons.

Safety is also a priority in the design of these machines. The H5E and H5X come equipped with built-in safety features such as automatic shut-off and thermal overload protection, which help to prevent accidents and enhance longevity. Moreover, their compact design allows for easy installation in a variety of settings, whether it's a small coffee stand or a large restaurant operation.

Both the Bunn H5E and H5X models are energy-efficient, with features that minimize power consumption without compromising performance. This focus on sustainability not only helps reduce overhead costs but also appeals to environmentally conscious consumers.

In summary, the Bunn H5E and H5X coffee machines are engineered for high performance, reliability, and versatility. With features designed to provide quick, quality coffee while ensuring ease of operation and maintenance, these machines are ideal for any establishment that takes its coffee seriously. Whether you’re brewing for a crowd or crafting specialty drinks, the H5E and H5X stand ready to deliver excellent results every time.