Sub-Zero Refrigerator Error Code 60 1 60
No refrigerator compressor load detected.
No refrigerator compressor load detected.
First step from the service manual
Check compressor electricals and wiring.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
Get the full diagnostic procedure for 60 1 60.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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What 60 1 60 means on a Sub-Zero refrigerator
Error code 60 1 60 on a Sub-Zero refrigerator indicates that the control system has failed to detect a load on the refrigerator compartment compressor circuit. In other words, the control board is attempting to energize the compressor but receiving no signal confirming that an electrical load is present. This points to a break or fault somewhere in the compressor's electrical supply chain rather than necessarily a mechanical compressor failure.
The refrigerator compressor relies on a complete circuit that includes the compressor start components, run capacitor, overload protector, and associated wiring harness. Any open connection in this path, such as a failed overload protector, a burned or disconnected wiring terminal, or a faulty start relay, can cause the control board to register the absence of a load. The diagnostic process begins with a thorough inspection of all compressor electrical connections, terminals, and wiring for signs of corrosion, heat damage, or physical disconnection.
If the wiring and connections appear intact, the compressor itself may have developed an internal open winding, which would also prevent any load from being detected. Resistance testing across the compressor terminals can confirm whether the motor windings are intact. A reading of infinite resistance on any winding indicates an open compressor, requiring compressor replacement. This fault will keep the refrigerator compartment from cooling properly until the underlying electrical issue is resolved.
Source: manufacturer service documentation.
Common causes of 60 1 60
- 01
Loose or damaged compressor wiring
Wiring / connectionA disconnected, corroded, or heat-damaged wire or terminal in the compressor circuit breaks the electrical path, preventing the control board from detecting any load. Inspect all wiring harness connectors at the compressor for physical damage or poor contact.
- 02
Failed compressor overload protector
Part replacementThe overload protector is a safety device mounted on the compressor that can fail open, interrupting the circuit. A failed overload protector reads as infinite resistance when tested with a multimeter and must be replaced.
- 03
Faulty compressor start relay
Part replacementThe start relay assists the compressor motor during startup. If the relay has failed open or its contacts are burned, the compressor circuit will appear broken to the control board. Shaking the relay and listening for a rattle, or testing it with a multimeter, can confirm failure.
- 04
Open compressor motor winding
Part replacementAn internal open winding in the compressor motor will prevent any detectable load on the circuit. Testing resistance across the compressor terminals will show infinite resistance on one or more winding pairs if this is the cause, indicating the compressor requires replacement.
- 05
Control board fault
Part replacementIf all compressor electricals and components test within normal parameters, the control board itself may be incorrectly reading or failing to detect the compressor load signal. This is a less common cause and should only be considered after all other components are confirmed good.
Frequently asked questions about 60 1 60
What does 60 1 60 mean on a Sub-Zero refrigerator?
Can I fix error code 60 1 60 myself?
Is it safe to keep using my Sub-Zero refrigerator with error code 60 1 60?
How much does it cost to repair error code 60 1 60 on a Sub-Zero refrigerator?
Will resetting my Sub-Zero refrigerator clear error code 60 1 60?
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