Bunn LCC-2, LCA-2 PC manual Troubleshooting Continued, Screen Displayed, Possible Cause

Models: LCA-2 PC LCA-2 LCC-2

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Corresponding Temperature Sensor

Troubleshooting (Continued)

Screen Displayed

 

Possible Cause

Troubleshooting Procedures

 

 

 

 

 

 

EVAP TEMP SENSOR

1.

Corresponding Temperature Sensor

Service Required

OUT OF RANGE

 

Probe wire(s) shorted to housing, or

 

 

 

 

 

to each other.

 

CHECK WIRE FOR

 

 

 

SHORTS

2.

Evaporator temperature too high.

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

LEFT PUMP FAULT!

1.

Motor failure

Service Required

CHK PUMP WIRING

2.

RPM Sensor failure

Service Required

 

 

 

CHK RPM SENSOR

 

 

 

CHK TUBING AREA

 

 

 

 

 

 

 

 

 

RT PUMP FAULT!

1.

Motor failure

Service Required

CHK PUMP WIRING

2.

RPM Sensor failure

Service Required

 

 

 

CHK RPM SENSOR

 

 

 

CHK TUBING AREA

 

 

 

 

 

 

 

 

 

COOLER FAULT!

1.

Cabinet circulating fan failure

Service Required

EVAP TEMP TOO HI

2.

Ice build up on evaporator coils

Service Required

 

 

 

CHECK EVAP FAN

 

 

 

CHK EVAP SENSOR

3.

Evaporator sensor failure

Service Required

 

 

 

 

 

 

 

 

 

 

 

 

COOLING TIME

1.

Air intake filter clogged

Clean Air Filter

TOO LONG

2.

Wiring failure

Check wiring harness for breaks,

 

 

 

CHECK

AIR FILTER

 

 

shorts, open connectors

CHECK COOLING UNIT

3.

Compressor failure

Service Required

 

 

 

 

 

 

 

COND PROBE FAULT

1.

Tube leaking

Check pump & tubing for proper

CHECK COND PROBES

 

 

installation

 

 

 

2.

Dispense switch failure

Service Required

CHK DISP SWITCHES

 

 

 

CHK CONNECTIONS

3.

Dispense valve leaking

Service Required

 

 

 

 

 

 

JUMPER FAULT!

1. Invalid wire harness configuation

Service Required

CONFIG NOT VALID

 

 

 

CHECK J-18

ON CONTROL BOARD

28

34766 010407

 

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Bunn LCC-2, LCA-2 PC manual Troubleshooting Continued, Screen Displayed, Possible Cause, Corresponding Temperature Sensor