Sub-Zero Classic BI Code 60-2-38: Freezer compressor communication lost

What 60-2-38 means

This one shows up on Classic Built-In models with electronic control such as the BI-36UFD/S and BI-36U/S. The 2 in the middle points to the freezer, and 38 means the power output that drives the freezer variable-speed compressor reported an error, so the board is no longer communicating with that compressor. Expect the freezer to lose temperature, ice production to slow or stop, and frozen food to soften if the condition lasts, while the fresh-food side may still cool normally.

Common causes of 60-2-38

Loose or corroded connector between the board and the freezer compressor drive
Freezer compressor drive that has stopped responding
Failed freezer compressor output on the main board

✓ One safe check you can try

1. Record the code and whether the freezer feels warmer than normal. 2. Turn the unit off at the breaker for two minutes and switch it back on. 3. Avoid opening the freezer so the cold holds longer. 4. If the code returns, pack frozen food into a cooler with ice or move it to another freezer, then contact us.

! Why to stop there

The drive lives behind the grille alongside high-voltage wiring.
Confirming communication between board and drive needs live testing.
Freezer compressor parts for a BI are costly, so the diagnosis has to be right first time.

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.

→Same appliance

Other Refrigerator codes

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 41Sub-Zero 648PRO Code 41: Zone compressor or wiring problem 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

60-2-3860-2-38 questions

Why is only my freezer warm?

On these BI models the freezer has its own compressor. 60-2-38 points to that compressor's drive circuit, so the freezer warms while the refrigerator side, which uses separate cooling, can carry on as usual.

Can a power surge cause 60-2-38?

A surge or brownout can upset the drive or the board output that feeds it. A breaker reset sometimes clears a one-off event. A code that keeps coming back points to a part that needs testing.

What do you check on the visit?

We inspect the harness, test the drive and confirm the board output under power. You get a written price before we start, and our workmanship is covered for 30 days.