Bunn LCR-3 service manual Too Low, Heating, Water, Check for BAD Connections

Page 23

Troubleshooting (Continued)

Screen Displayed

Possible Cause

Troubleshooting Procedures

 

 

 

____ TARGET RPM

The calculated Target RPM for the

Check Pump & Flow Rate Calibration, refer

TOO LOW !!

pump indicated is out of range

to Field Calibration Procedures

 

 

 

____ PUMP FAULT

1.

Pump Motor failure

Service Required

CHK PUMP WIRING

 

 

 

CHK RPM SENSOR

2.

RPM Sensor failure

Service Required

CHK TUBING AREA

3.

Tubing pinched in rollers

Replace Tubing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OVERFLOW

1.

Refill valve stuck open

Service Required

FAULT

2.

Faulty refill probe

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Faulty overflow switch

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEATING TIME

1.

Tank Heater failure

Service Required

TOO LONG

2.

Triac failure

Service Required

CHECK

 

 

 

 

HEATING

 

 

 

 

3.

Tank Temp. sensor failure

 

CIRCUIT

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FILL TIME

1.

Water shut off to dispenser

Check water supply valve

TOO LONG

 

 

 

CHECK

 

 

 

WATER

2.

Inlet Solenoid Valve failure

Service Required

 

 

SUPPLY

 

 

 

 

 

 

 

 

 

 

 

 

 

TANK SENSOR OUT OF RANGE

CHECK FOR BAD

CONNECTIONS

CHECK WIRE FOR SHORTS

1.Corresponding Temperature Sensor Probe wire(s) broken or disconnected

2.Corresponding Temperature Sensor Probe wire(s) shorted to housing, or to each other.

Service Required

Service Required

23

41129 052208

 

Image 23
Contents Phone 217 529-6601 FAX 217 LCR-3 HVBUNN-O-MATIC Commercial Product Warranty Introduction ContentsMoving Parts User NoticesPlumbing Requirements Electrical Requirements Field Wiring Terminal Block DiagramLeveling the Dispenser Initial SET-UPElectrical HOOK-UP Plumbing HOOK-UPDrip Tray Installation Operating Controls and Interface Initial Fill & Heat Alarm Level Alarm Mode Rinse Alarm FeatureRinse Procedure Optional 2- Product Operation BIB Empty Lockout FeatureBrew Temperature Lockout Feature Energy Saver ModeProgramming the Dispenser Programming Saver Tank Temp No Exit Action BibEMPTY LockoutHRS + CAL HI WTR VOL LCD Display Actiondescription CAL Left Pump ? LeftCAL Middle Pump ? CAL MID Pump VOL Test Refill ? Exit YES Test Heater ? WTR Start DelayWTR Stop Delay LCD Display XxoverflowPriming the Concentrate Lines Loading the ConcentrateFilling Cambros or Other Large Containers Operating the DispenserTo Dispense Hot Water Weekly Refrigeration AIR Filter Cleaning & Preventative MaintenancePreventive Maintenance Weekly SanitizingReplacing the Pump Tubing Draining the HOT Water Tank No Display TroubleshootingPossible Cause Troubleshooting Procedures Check for BAD Connections TOO LOWHeating WaterScreen Displayed Possible Cause Dispenser Flow Rate Calibration Calibrating the Left Concentrate PumpField Calibrating the Empty BIB Warning Schematic Wiring Diagram