Scotsman CSW45 - Manual (Page 18)

Technical Service Diagnosis
CSW45
July 1999
Page 18
Symptom Possible Cause Probable Correction
Unit Off
No power to unit
Plug unit it
Reset circuit breaker or replace
fuse
Unit switched off Check control switch
Ice level control keeping unit off
Room colder than 55
o
F., increase
heat
Ice on sensor tube - remove it
Transformer Open Check/replace transformer
Control board failed
Switch unit to Clean, note if all
valves and motors are switched
on for 5 seconds each one after
another. If not, replace the board.
Unit runs, makes no ice
No water to unit
Check/restore water supply
Check water valve
Pump does not run
Check connection from control
box to pump
Check/replace pump
Unit overheating
Check for dirty condenser
Check fan blade and motor
Air flow blocked, check for air
obstruction
Compressor does not run
Check compressor relay
Check compressor windings
Low on refrigerant
Install service ports, weigh out
charge, If low, locate and repair
leak, replace drier evacuate to
300 microns and weigh in
nameplate charge*
Hot gas valve leaking thru Check/replace hot gas valve
* If the system has been running in a vacuum AND the leak is found to be on the LOW side, repair the leak
AND replace the compressor.