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11. Condensing Unit Troubleshooting 

 

Unit not running 

a.  Incorrect power supply 
b.  Incorrect or loose wirings 
c. Failed 

components 

 
d.  Liquid refrigerant in the compressor 
e.  Low pressure switch shutting down the system 

a.  Check for proper voltage 
b.  Check all wirings and  connections 
c.  Check start relay, start capacitor, overload 

protector, compressor. 

d.  Call service for OEM information 
e. Check for system restriction or low 

refrigerant 

 

Summary of Contents for WINE-MATE 250SCU

Page 1: ...a liquid line and an insulated suction line that are supplied by the installer These lines must be properly sized for the distance between the two units After the units and the lines are installed th...

Page 2: ...ion 1 Process Manometer 2 Receiver Compressor Suction 3 Liquid Suction Line 4 Pressure Control Back Position Process and manometer port closed for normal operation Front Position Connection to liquid...

Page 3: ...evaporator unit including liquid line connection solenoid valve expansion valve and suction line connection returning to insulated suction line suction valve and then condensing unit Use inverted siph...

Page 4: ...CONNECTION SIZES OF CONDENSING UNIT AND THE LINE CONNECTION SIZES OF EVAPORATOR UNIT ARE NOT NECESSARY THE SAME AS THE ABOVE SPECIFIED LINE SIZES IF THE CONDENSING UNIT IS INSTALLED ABOVE THE EVAPORAT...

Page 5: ...pressure High superheat and high subcooling o low to normal suction pressure and high head pressure High to normal superheat and high subcooling g Undercharge h Liquid line restricted after receiver...

Page 6: ...n 170 psig Cut out 120 psig Differential 50 psig It may need to adjust the setting in the field to prevent short fan cycle 10 Use of the crankcase heater if applicable for low ambient kit The crankcas...

Page 7: ...led components d Liquid refrigerant in the compressor e Low pressure switch shutting down the system a Check for proper voltage b Check all wirings and connections c Check start relay start capacitor...

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