Bunn LCC-2, LCA-2A, 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 Phone 217 529-6601 FAX 217 LCA-2 LCA-2A LCA-2 PC LCC-2BUNN-O-MATIC Commercial Product Warranty Introduction Contents40054.0000 00824.0002 47624.0000 User Notices00656.0001 37881.0000 28181.0003 11646.0002Electrical Requirements Field Wiring Terminal Block DiagramModels without Master ON/OFF Switch Models with Master ON/OFF SwitchPlumbing Requirements Electrical HOOK-UPPlumbing HOOK-UP Initial SET-UP Installing the Drip Tray and Flip Down CUP Tray1513 Operating Controls and InterfaceOz/sec 16 I.D. Tubing Selecting the Correct Pump TubingDispense RateSetting Dispenser Flow Rate Removing the restrictorsReprogramming the Dispenser Flow Rate Procedure for Adjusting the Mix Ratio to Taste Adjusting MIX RatiosFlavorGard Feature Rinse Alarm FeatureAlarm Mode Brew Temperature Lockout Feature BIB Empty Lockout FeatureExit 3/16 Programming the DispenserMenu Screen Action Description Tank Temp 351 +0oz + LF Disp VolumeRT Disp Volume Menu Screen Lock Flavor ? Exit YES Flavors LockedCabinet Temp Menu Screen Tank TempExit + Ready TempCAL Left Pump ? Pull Dispense Menu ScreenRinse Time ? 12 Hrs + Action DescriptionCAL Right Side ? Exit YES Menu Screen ActionCAL Right Pump ? Pull Dispenser CAL RT WTR Flow Pull DispenserTest Refill ? Exit YES WTR Start DelayWTR Stop Delay Test LED’S ? No Exit YES Test Switches ?Initial Fill & Heat Priming the Concentrate Lines Loading the ConcentrateFilling Cambros or other large containers Operating the Pull & Hold DispenserModels LCA-2 PC, LCA-2C PC, LCA-2A PC Operating the Preset Portion Control DispenserWeekly Sanitizing Cleaning & Preventative MaintenanceGeneral Cleaning and Sanitizing Procedures Daily Rinsing Daily Parts WashingReplacing the Pump Tubing Preventive MaintenanceDraining the HOT Water Tank Troubleshooting Power LED OFFFront Panel LED Display Messages Left Refill LED on Internal FaultPossible Cause Troubleshooting Dispenser Diagnostics-LCD DisplayBIB Not properly connected Check BIB Connector Fittings Tubing kinked or blocked Check Tubing installationScreen Displayed Possible Cause Wiring failure Corresponding Temperature SensorEvaporator temperature too high Air intake filter clogged Clean Air FilterCalibrating the Left Side Dispenser Calibrating the Right Side Dispenser Field Calibrating the Hot Water Flow RateOz/sec 53 ml/sec w/ flow restrictor Oz/sec 74 ml/sec w/o flow restrictorCalibrating The Empty BIB Threshold Field Calibrating the Empty BIB WarningLCA-2/LCA-2, PC/LCA-2C/LCA-2C, PC/LCC-2/LCC-2C Schematic Wiring DiagramSchematic Wiring Diagram LCC-2A/LCA-2A/LCA-2A, PC
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LCA-2 PC, LCA-2A, 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.