Bunn LCA-2 PC Installation & Operating Manual page 28

Screen Displayed
OVERFLOW CUP
FULL. EMPTY CUP
HEATING TIME TOO
LONG
CHECK HEATING
CIRCUIT
FILL TIME TOO LONG
CHECK WATER SUPPLY
TANK TEMP SENSOR
OUT OF RANGE
CHECK FOR BAD
CONNECTIONS
COOL TEMP SENSOR
OUT OF RANGE
CHECK FOR BAD
CONNECTIONS
EVAP TEMP SENSOR
OUT OF RANGE
CHECK FOR BAD
CONNECTIONS
TANK TEMP SENSOR
OUT OF RANGE
CHECK WIRE FOR
SHORTS
COOL TEMP SENSOR
OUT OF RANGE
CHECK WIRE FOR
SHORTS
Troubleshooting (Continued)
Possible Cause
1. Refill valve stuck open
2. Faulty refill probe
3. Faulty overflow switch
1. Tank Heater failure
2. Triac failure
3. Tank Temp. sensor failure
1. Water shut off to dispenser
2. Inlet Solenoid Valve failure
1. Corresponding Temperature Sensor
Probe wire(s) broken or disconnected
1. Corresponding Temperature Sensor
Probe wire(s) broken or disconnected.
2. Product cabinet temperature too low.
1. Corresponding Temperature Sensor
Probe wire(s) broken or disconnected.
2. Evaporator temperature too low.
1. Corresponding Temperature Sensor
Probe wire(s) shorted to housing, or to
each other.
1. Corresponding Temperature Sensor
Probe wire(s) shorted to housing, or
to each other.
2. Product cabinet temperature too high.
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
Check water supply shut-off
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
Service Required
28
Troubleshooting Procedures
34766 011604