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Error code reference

Prodigy Ice Maker Error Code 4

High discharge temperature; discharge temperature has exceeded 250 degrees F.

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What the 4 error code actually means

Your Prodigy ice maker detected that a key part of the refrigeration system got dangerously hot, over 250 degrees, and shut itself off to prevent serious damage. This usually means the machine is having trouble releasing heat, often because the condenser coil is dirty or the cooling fan is not working properly. The machine will not make ice again until the underlying heat problem is resolved.

Diagnostic procedure

The full 4 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check condenser coil cleanliness, condenser fan motor operation, and air intake temperatures at condenser.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of 4

Ranked by how often they cause this code
  1. 1Dirty or clogged condenser coil
  2. 2Condenser fan motor failure or reduced speed
  3. 3Elevated ambient or intake air temperature
  4. 4Refrigerant overcharge or undercharge
  5. 5Discharge temperature sensor fault

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Questions people ask about 4

What does 4 mean on a Prodigy ice_maker?
Error code 4 means the discharge line temperature has exceeded 250 degrees Fahrenheit. The discharge line carries hot refrigerant vapor from the compressor to the condenser, and this threshold protects the compressor from heat damage. The machine shuts down automatically when this limit is reached and will not resume ice production until the cause is corrected.
Is it safe to keep using the ice maker when error code 4 appears?
No. The machine shuts itself down when code 4 appears specifically to prevent compressor damage from excessive heat. Continuing to operate the unit while this fault is active could lead to compressor failure, which is a much more costly repair. Leave the machine off until the cause of the high discharge temperature has been identified and corrected.
Will resetting the Prodigy ice maker clear error code 4?
A reset may allow the machine to restart temporarily, but code 4 will return if the underlying cause has not been addressed. Simply clearing the fault without fixing the heat rejection problem risks repeating the overheat condition and can cause progressive compressor damage. Always diagnose and correct the root cause before resetting the unit.
How do I fix error code 4 on my Prodigy ice maker?
Start by cleaning the condenser coil and removing any dust, grease, or debris that may be blocking airflow. Then confirm that the condenser fan motor is running properly and that air can circulate freely around the unit. If the coil is clean and the fan is working, check that the ambient temperature around the machine is within the rated operating range. If the error persists after addressing these items, a refrigeration technician should check the refrigerant charge and sensor calibration.
How much does it cost to repair error code 4 on a Prodigy ice maker?
Repair costs vary widely depending on the cause. A condenser coil cleaning is generally a low-cost service call, typically in the range of $75 to $150 for labor. A condenser fan motor replacement can cost $150 to $400 depending on the part and labor rates. If the compressor has already been damaged by the overheating condition, repair or replacement costs can reach $600 to $1,500 or more.

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