KitchenAid Ice Maker CP Error: Compressor Fault
What Does KitchenAid Ice Maker Error Code CP Mean? CP on a KitchenAid ice maker indicates a compressor fault — the compressor has failed to start, has tripped its overload protector, or has an electrical problem in its start circuit. The board detects the fault by monitoring the cabinet temperature and confirming that the compressor […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. A failing compressor cannot cool the cabinet and may progress to winding failure if repeatedly restarted. Leave unplugged until service is completed.
Can I reset the code?
No. CP caused by a failed component does not clear with power cycling. Only a clean-condenser recovery from a thermal overload has any chance of clearing.
When to stop immediately?
Stop if you notice: Compressor fails to start on multiple attempts, Burning smell from the compressor area.
Symptoms You May Notice
No compressor sound at all
The usual steady compressor hum is completely absent. The cabinet is not getting cold and existing ice is beginning to melt.
Loud clicking sound from the compressor area
You hear the compressor attempting to start — a loud click every minute or so — followed by overload protection tripping it off again. This is the characteristic signature of a compressor start problem.
Warm cabinet interior with ice maker on
The interior of the ice maker cabinet is at room temperature or only slightly cool, indicating the compressor has not been running successfully for an extended period.
Possible Causes
Start relay or start capacitor failed
The start relay or capacitor that provides the extra rotational torque needed to start the compressor has failed, so the compressor motor stalls and the overload trips it off repeatedly.
Requires ProfessionalCompressor motor internal failure
A shorted winding, seized rotor, or burned motor windings prevent the compressor from running regardless of the start circuit condition. This is a sealed-system repair approaching replacement cost.
Requires ProfessionalOverload protector open due to overheating
The thermal overload protector on the compressor has opened due to repeated overheating, usually as a downstream effect of condenser blockage or ambient temperature issues.
Requires ProfessionalSafe Checks You Can Do
-
1
Clean the condenser and allow the unit to cool
Unplug the ice maker. Clean dust from the condenser coil through the front grille. Leave the unit unplugged for thirty minutes to allow the overload protector to reset. Restore power and listen for compressor operation.
A dirty condenser is an indirect cause of compressor faults — the compressor overheats from poor heat rejection and eventually trips its overload. Cleaning may not fix the immediate CP fault but helps prevent recurrence.
Tools required -
2
Empty the bin and prepare for service
Remove all ice and water from the storage bin. Make notes on when CP first appeared and any unusual sounds or smells that accompanied it. Photograph the model and serial plate for the service call.
A compressor that trips overload repeatedly should not be power-cycled multiple times — each failed start stresses the windings further. Limit restart attempts to one or two.
When to Call a Professional
Contact a qualified technician if:
- Start relay tested open or shorted
- Compressor windings measure incorrectly with a multimeter
- Compressor replacement required for internal failure
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
Ice Maker Repair Service Schedule Appointment