Bunn LCC-2, LCA-2 PC manual Troubleshooting, Front Panel LED Display Messages, Power LED OFF

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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.

Only qualified service personnel should perform inspection, testing, and repair of electrical equipment.

Shorting the terminals or the application of external voltages to electronic components may result in component or circuit 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 wire 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 avoid twists and kinks in the tubing.

Make certain that all plumbing connections are sealed and all electrical connections are tight and isolated.

This dispenser is heated at all times. Keep away from combustibles.

WARNING:

Exercise extreme caution when servicing electrical equipment.

Disconnect the brewer from the power source when servicing, except when electrical tests are specified. The red “Power LED” on the door indicates that the unit is connected to AC Power.

Follow recommended service procedures.

Replace all protective shields or safety notices.

Front Panel LED Display Messages

Power LED “OFF”

Dispenser Not plugged in.

Check Power Cord

No AC Power

AC Circuit Breaker OFF

Check the AC Power Circuit Breaker

 

 

Service Required

 

 

 

 

 

 

Ready LED “OFF”

Usage has exceeded the

Check Tank Temp Setting

Water Temp. Too Low

capacity of the Tank Heater

Check Ready Temp. Setting

 

 

Service Required: Change the Supply Voltage,

 

 

see Optional Field Wiring

 

 

 

 

 

 

Rinse LED “ON”

Rinse Cycle Required

Rinse Dispenser, see Rinse Procedure

Rinse Timer

 

 

 

 

 

 

 

 

Rinse LED “FLASHING”

Dispenser Locked Out

Rinse Dispenser, see Rinse Procedure

Rinse Lockout Enabled

Rinse Cycle Required

 

 

 

 

 

 

 

Portion LED “ON”

Alternate Portion Dispenser

Activate the Dispenser within 5 sec. to

Portion Dispense

Volume #2 has been selected

dispense the pre-selected volume.

Enabled

 

 

 

 

 

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Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 529-6601 FAX 217Contents BUNN-O-MATIC Commercial Product WarrantyIntroduction User Notices00656.0000 28181.0003Field Wiring Terminal Block Diagram Models without Master ON/OFF SwitchModels with Master ON/OFF Switch Electrical RequirementsPlumbing Requirements Initial SET-UPElectrical HOOK-UP Plumbing HOOK-UPSetting Dispenser Flow Rate Removing the restrictorsReprogramming the Dispenser Flow Rate Selecting the Correct Pump Tubing DispenseRate Oz/sec 16 I.D. TubingOperating Controls and Interface 1513Initial Fill & Heat FlavorGard Feature Rinse Alarm FeatureAlarm Mode BIB Empty Lockout Feature Brew Temperature Lockout FeatureProgramming the Dispenser Menu Screen Action Description Tank Temp351 + Exit 3/16LF Disp Volume RT Disp VolumeMenu Screen Lock Flavor ? Exit YES Flavors Locked 0oz +Menu Screen Tank Temp Exit +Ready Temp Cabinet TempMenu Screen Rinse Lockout ? No Exit YESBrew Lockout ? No Exit YES Action DescriptionMenu Screen Action CAL Right Pump ? Pull DispenserCAL RT WTR Flow Pull Dispenser CAL Right Side ? Exit YESWTR Start Delay WTR Stop DelayTest LED’S ? No Exit YES Test Switches ? Factory Defaults No YES Action DescriptionLoading the Concentrate Priming the Concentrate LinesOperating the Pull & Hold Dispenser Filling Cambros or other large containersOperating the Preset Portion Control Dispenser Models LCA-2 PC, LCA-2C PC, LCA-2A PCCleaning & Preventative Maintenance General Cleaning and Sanitizing Procedures Daily RinsingDaily Parts Washing Weekly SanitizingReplacing the Pump Tubing Draining the HOT Water Tank Troubleshooting Power LED OFFFront Panel LED Display Messages Internal Fault Left Refill LED onConcentrate BIB is Empty Empty BIB WarningTroubleshooting Dispenser Diagnostics-LCD Display BIB Not properly connected Check BIB Connector FittingsTubing kinked or blocked Check Tubing installation Possible CauseScreen Displayed Possible Cause Evaporator temperature too high Service Required Motor failure Service RequiredRPM Sensor failure Service Required Cabinet circulating fan failure Service RequiredCalibrating the Left Side Dispenser Field Calibrating the Hot Water Flow Rate Oz/sec 53 ml/sec w/ flow restrictorOz/sec 74 ml/sec w/o flow restrictor Calibrating the Right Side DispenserField Calibrating the Empty BIB Warning Calibrating The Empty BIB ThresholdLCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C Schematic Wiring Diagram Schematic Wiring Diagram LCC-2A/LCA-2A/LCA-2A, PC
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LCA-2 PC, LCA-2, LCC-2 specifications

The Bunn LCC-2, LCA-2 PC, and LCA-2A are high-performance commercial coffee brewers designed to meet the demands of busy coffee shops, restaurants, and other food service establishments. These machines are known for their efficiency, durability, and advanced brewing technologies, making them popular choices in the industry.

Starting with the Bunn LCC-2, this brewer is recognized for its compact design and ease of use. It has a brewing capacity of up to 3.8 gallons per hour, ensuring that coffee is ready quickly during peak hours. The LCC-2 uses a pour-over brewing method, which means that water is heated to the ideal brewing temperature and then poured over coffee grounds for optimal extraction. One of its standout features is the digital temperature control, which allows operators to adjust brewing temperatures easily for different coffee types. Additionally, the Bunn LCC-2 features a stainless steel construction that enhances durability and provides a sleek look for any commercial kitchen.

Moving on to the Bunn LCA-2 PC, this model includes programmable capabilities, making it perfect for establishments that require consistency and convenience. The LCA-2 PC allows users to preset brewing schedules and customize brew cycles, ensuring that each pot of coffee meets specific flavor profiles. This model is designed with a large-capacity brewing system that can produce up to 7.5 gallons of coffee per hour, making it an ideal choice for high-demand environments. It also boasts a built-in hot water faucet, which provides instant hot water for other beverages or culinary applications. The LCA-2 PC's advanced brewing automation helps maintain optimal brew quality while minimizing waste.

Lastly, the Bunn LCA-2A is an advanced version that focuses on automation and efficiency. This brewer features a state-of-the-art digital brew timer, which allows precise control over brew times, leading to consistent flavor extraction. The LCA-2A also integrates with Bunn’s patented brewWISE technology, which tracks brew recipes and monitors performance. The intuitive interface allows for easy operation, even for staff who may be less experienced with coffee brewing. With a capacity of up to 4 gallons per hour and a durable stainless steel frame, the LCA-2A ensures longevity while delivering exceptional coffee.

In summary, the Bunn LCC-2, LCA-2 PC, and LCA-2A represent the pinnacle of commercial coffee brewing technology. Their unique features, including programmable settings, large brewing capacities, and durable constructions, cater to the diverse needs of the food service industry. Each model emphasizes convenience, flexibility, and quality, making them invaluable assets in any professional coffee environment.