Sub-Zero error code · 60 1 38
Sub-Zero Code 60 1 38: Refrigerator Variable-Speed Compressor Communication Error
Sub-Zero code 60 1 38 means the refrigerator variable-speed compressor communication failed. Per Sub-Zero, replace the control board after checking wiring.
Sub-Zero code 60 1 38 means the control board lost communication with the refrigerator variable-speed compressor inverter. Per Sub-Zero, the fix is to replace the control board after confirming the inverter wiring and connections are sound.
60 1 38, explained
This code flags a failure in the communication link between the main control board and the refrigerator variable-speed (inverter) compressor drive. It is a companion fault to other refrigerator compressor communication codes and indicates the board cannot reliably command or read back from the inverter. The refrigerator compressor may run incorrectly or not at all, causing poor or no cooling on the refrigerator side.
Severity:Service needed
How 60 1 38 shows up
- Refrigerator compartment warms or fails to reach setpoint
- Refrigerator compressor not running or behaving erratically
- Service mode shows code 60 1 38
- Freezer side may still cool on dual-compressor models
- Code persists after a power-cycle
What usually causes it
- Control board communication fault to the compressor inverter
- Loose or corroded connector at the board or inverter
- Damaged compressor communication harness
- Power surge or electrical noise on the data link
- Aged or defective board communication circuitry
Which part 60 1 38 points to
- Control board — Primary replacement per Sub-Zero once wiring and connectors are verified
- Compressor inverter or communication harness — Inspect and replace only if the connection or inverter is found damaged
Why 60 1 38 appears
The fault typically stems from a degraded board-to-inverter connection, a damaged communication harness, or a defect in the board communication circuitry. Power surges, electrical noise, and component aging degrade the link over time. Sub-Zero directs replacing the control board because the fault is generally board-side, after wiring and connectors are inspected.
What you can safely check
- Note the exact code shown in service mode
- Power-cycle the unit at the breaker for two minutes and recheck
- Check whether the refrigerator compartment is warming
- Do not access the compressor or inverter compartment
When 60 1 38 needs a technician
Inspecting the inverter wiring and replacing the control board involves high-voltage compressor electronics that require a qualified technician.
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Frequently asked
Sub-Zero 60 1 38 — questions
What is Sub-Zero code 60 1 38?
Code 60 1 38 flags a failure in the communication link between the main control board and the refrigerator variable-speed (inverter) compressor drive. The board cannot reliably command or read back from the inverter, so the refrigerator compressor may run incorrectly or not at all, causing poor or no cooling on the refrigerator side. It is a companion fault to other refrigerator compressor communication codes.
Is code 60 1 38 a do-it-yourself repair?
No. The owner-safe steps are noting the code, power-cycling at the breaker for two minutes, and checking whether the refrigerator compartment is warming. Do not access the compressor or inverter compartment. Inspecting the inverter wiring and replacing the control board involves high-voltage compressor electronics that require a qualified technician.
How do I clear code 60 1 38?
A breaker power-cycle of about two minutes may be attempted, but since the fault is generally board-side, 60 1 38 typically persists after a power-cycle. It clears for good only once the wiring and connectors are inspected and, per Sub-Zero, the control board is replaced. A code that returns after power-cycling confirms a repair is needed.
Can I keep using the refrigerator with code 60 1 38 showing?
Treat 60 1 38 as urgent. It is high severity because the refrigerator compressor may not run, allowing the fresh-food side to warm and risking spoilage; on dual-compressor models the freezer may still cool. If the refrigerator is warming, relocate perishables and schedule service quickly rather than relying on the unit to hold temperature.
What part fixes 60 1 38 and what is the cost?
Per Sub-Zero, the primary replacement is the control board after the inverter wiring and connectors are verified; the compressor inverter or communication harness is replaced only if it is found damaged. We charge a flat $89 to diagnose and confirm the fault, back the repair with a 365-day warranty, and take bookings at (650) 668-1554.
How is 60 1 38 different from code 60 1 02?
60 1 38 and 60 1 02 are sibling refrigerator variable-speed compressor communication errors on the same board-to-inverter data link, and Sub-Zero prescribes the same remedy, replacing the control board after verifying the wiring. They differ in the exact diagnostic condition the board records when logging the fault, but a technician approaches both the same way: confirm the inverter connections first, then replace the board.
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