Справочник Пользователя для SterlingTek A0551797

No power. 

Check main disconnect, 
fuses, wiring, and power lead 
to unit. 

Wrong voltage supplied to 
unit. 

Voltage must be within plus 
or minus ten percent (±10%) 
of nameplate rating. 

Defective On/Off switch. 

Replace switch. 

Control circuit fuse blown. 

Replace fuse, check 
transformer, check wiring for 
loose wires, check for shorted 
coils on contactors and 
solenoids, check crankcase 
heater. 

Defective control transformer.  Replace. 

Flow switch circuit is open. 

Check pump for proper 
rotation. 

Pump motor off on overload. 

Reset and test motor. 
Check that the chiller pump is 
running. 
Check that all valves are 
open. 

Unit does not run. 

Unit is off on flow switch or 
pressure switch. 

Check for defective flow 
switch or pressure switch. 

Freeze control set higher than 
temperature of liquid in 
system. 

Lower freeze control setting 
to 10°F (6ºC) below the 
leaving temperature you 
want. 
Air cooled units: Check and 
clean air filters. Check 
condenser fans for proper 
rotation. Check for dirty 
condenser. Check for 
condenser air obstruction. 
Check for tripped motor 
overload, blown fuses, or bad 
condenser fan motor. 

Pump runs, 

compressor does not. 

High pressure refrigerant 
cutout switch contacts open. 

Water cooled units: Check for 
water valves turned on. 
Check for dirty condenser. 
Check water flow through 
condenser.