Service manual

Service Diagnosis - Low ice making capacity - air cooled
Problem Likely Cause Probable Solution
Long freeze cycle
Dirty air filter Clean filter
Dirty condenser Clean condenser
Hot ambient Reduce room air temperature
Water leak Check purge valve, check curtain
Water inlet valve leaks through Check inlet valve
Low on refrigerant
Add refrigerant, if cycle time drops,
check for leak
Incorrect superheat
Check evaporator superheat, if
significantly low or high, replace
TXV
Fan(s) cycle on and off
Check pressures fans cycle at.
Replace fan pressure switch if too
low
Long Harvest Cycle
Dirty evaporator De-scale water system
No harvest assist Check harvest assist solenoid
Bridge thickness too big Check and adjust bridge thickness
Machine in very cool ambient Increase room temperature
False bin full signal
Ice jammed in between curtain and
sump
Clear ice away
Curtain does not close correctly Check curtain for proper swing
Makes excessive noise - air cooled
Problem Likely Cause Probable Solution
Fan blade vibrates
Blade is bent Replace fan blade
Fan motor mount is broken Replace motor mount
Compressor vibrates Mounting bolts loose Tighten bolts
Water pump vibrates Pump bearings worn Replace pump
Panels vibrate Mounting screws loose Tighten screws
May 2008
Page 31
CU1526, CU2026, CU3030
Service Manual