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Bunn LCA-2 Guía De Operación

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Screen Displayed 
 
Possible Cause 
 
 
 
Troubleshooting Procedures
Troubleshooting (Continued)
34766 010407
EVAP TEMP SENSOR 
OUT OF RANGE
CHECK WIRE FOR
SHORTS
LEFT PUMP FAULT! 
CHK PUMP WIRING
 
 
 
CHK RPM SENSOR 
CHK TUBING AREA
RT PUMP FAULT! 
CHK PUMP WIRING
CHK RPM SENSOR
CHK TUBING AREA
COOLER FAULT!
EVAP TEMP TOO HI
CHECK EVAP FAN
CHK EVAP SENSOR
COOLING TIME
TOO LONG
CHECK AIR FILTER
CHECK COOLING UNIT
COND PROBE FAULT 
CHECK COND PROBES
CHK DISP SWITCHES
CHK CONNECTIONS
JUMPER FAULT! 
CONFIG NOT VALID
CHECK J-18
ON CONTROL BOARD
1.  Corresponding  Temperature  Sensor 
Probe wire(s) shorted to housing, or 
to each other. 
2.  Evaporator temperature too high.
1.  Motor failure 
 
 
 
2.  RPM Sensor failure
1.  Motor failure 
 
 
 
2.  RPM Sensor failure
1.  Cabinet circulating fan failure
2.  Ice build up on evaporator coils
3.  Evaporator sensor failure
1.  Air intake filter clogged
2.  Wiring failure
3.  Compressor failure
1.  Concentrate buildup on probes
2.  Machine dispensing continously
3.  Water flowing continously
1. Invalid wire harness configuation
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
Clean Air Filter
Check wiring harness for breaks,
shorts, open connectors
Service Required
Check pump & tubing for proper 
installation. Clean probes
Dispense  switch  failure,  Service 
Required
Dispense  valve  leaking,  Service 
Required
Service Required