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Error code reference

Sub-Zero Refrigerator Error Code 35 C 33

DC condenser fan speed set too low

Sub-Zero codesSub-Zero refrigerator codes
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What the 35 C 33 error code actually means

Your Sub-Zero refrigerator has detected that the fan responsible for cooling the condenser coils is spinning faster than it is supposed to. This is an electrical control issue, not a mechanical noise problem, and the refrigerator may continue running but could be working less efficiently. A technician should inspect the fan and its wiring to find the root cause.

Diagnostic procedure

The full 35 C 33 procedure

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First diagnostic step
Verify fan not shorted.
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Most common causes of 35 C 33

Ranked by how often they cause this code
  1. 1Shorted fan motor winding or wiring
  2. 2Faulty fan motor losing speed regulation
  3. 3Inaccurate tachometer or speed feedback signal
  4. 4Control board sending incorrect speed command
  5. 5Loose or corroded connector at the fan motor

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Questions people ask about 35 C 33

What does 35 C 33 mean on a Sub-Zero refrigerator?
Error code 35 C 33 means the DC condenser fan is running faster than its programmed speed setting. The control board detected a mismatch between the commanded fan speed and the actual operating speed. This fault points to a problem in the condenser fan circuit, including the motor itself, its wiring, or the control board.
Is it safe to keep using my Sub-Zero refrigerator while error 35 C 33 is active?
The refrigerator may continue to operate, but condenser fan faults can reduce the unit's ability to reject heat effectively. Prolonged operation with this fault could stress the compressor and other components over time. It is best to have the issue diagnosed and repaired promptly rather than ignoring it.
Will resetting my Sub-Zero refrigerator clear error code 35 C 33?
A reset may temporarily clear the fault code from the display, but if the underlying problem in the condenser fan circuit is not corrected, the code will return. Resetting without diagnosis and repair does not fix the fan motor, wiring, or control issue causing the overspeed condition.
How do I fix error code 35 C 33 on my Sub-Zero refrigerator?
Start by inspecting the condenser fan motor and its wiring for any shorts, damaged insulation, or loose connectors. Check winding resistance at the motor to confirm there is no internal short. If the wiring checks out, the fan motor itself may need replacement. If the fault persists after replacing the motor, the control board should be evaluated.
How much does it cost to repair error code 35 C 33 on a Sub-Zero refrigerator?
Repair costs depend on the root cause. A condenser fan motor replacement typically runs in the range of $150 to $400 including parts and labor. If the control board is at fault, costs can range from $400 to $900 or more depending on the specific model. Diagnostic fees may apply separately.

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