Sub-Zero Classic BI Code 95-1-01: Refrigerator compressor signal stuck on

What 95-1-01 means

Classic Built-In refrigerators with electronic control, the BI-36U/S and BI-36UFD/S among them, record 95-1-01 as a refrigerator diagnostics code. It means the micro-compressor diagnostic pin for the refrigerator compressor is stuck in the on position. The board can no longer trust that signal, so the refrigerator compressor may run far longer than it should, overcooling the fresh-food section or freezing produce, or the control may limit operation to protect the system.

Common causes of 95-1-01

Refrigerator compressor drive reporting a stuck-on diagnostic signal
Wiring short holding the diagnostic line on
Control board misreading the compressor signal

✓ One safe check you can try

1. Record 95-1-01. 2. Check the fresh-food section with a thermometer for overcooling. 3. Move delicate produce away from the back wall if it is freezing. 4. With the breaker, remove power for two minutes, then return it. 5. Reach out to us if it reappears.

! Why to stop there

The compressor drive and diagnostic wiring sit in the machine compartment beside line voltage.
Confirming a stuck signal needs live testing.
Compressor drive parts are expensive, so we test before ordering.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Refrigerator codes

81Sub-Zero 700-2 Code 81: Variable-Speed compressor fails to start 82Sub-Zero 700-2 Code 82: VS compressor controller needs replacement 88Sub-Zero 700TF Code 88: Board and compressor controller not talking 80Sub-Zero 700TF Code 80: No inverter feedback after a board change ddSub-Zero 600 and 700 Series Display dd: Diagnostics switched off deSub-Zero 600 and 700 Series Display de: Diagnostics enabled 23Sub-Zero 600, 700 and 648PRO Code 23: Defrost overheat with no feedback 50Sub-Zero 600 and 700 Series Code 50: Refrigerator compressor running too long

95-1-0195-1-01 questions

Why is my produce freezing?

When the refrigerator compressor diagnostic signal is stuck on, the compressor can run longer than needed. That overcools the fresh-food section, which is why lettuce, herbs and fruit near the back may freeze.

Is it the compressor?

Not necessarily. The diagnostic pin reports on the compressor drive. A stuck signal can come from the drive, the wiring or the board, and we test each one before pointing at the compressor.

What is the repair cost?

After testing, we give you a written price. Nothing is replaced without your approval, and our workmanship on the finished repair is covered for 30 days.