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Error code reference

Sub-Zero Refrigerator Error Code 60 6 60

Compressor load open / no load detected.

Sub-Zero codesSub-Zero refrigerator codes

Compressor load open / no load detected.

First step from the service manual

Check compressor wiring and starting relay; test compressor windings.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What 60 6 60 means on a Sub-Zero refrigerator

Error code 60 6 60 on a Sub-Zero refrigerator indicates that the control board has detected an open load condition at the compressor. In plain electrical terms, the board is sending a signal to run the compressor but receiving no feedback indicating a functional load is present. This typically means the electrical circuit between the control board and the compressor motor is broken somewhere, or the compressor motor windings themselves have failed in a way that prevents current draw.

The compressor is the core component of the sealed refrigeration system. It is driven by a motor with start, run, and common windings. A starting relay assists the motor in reaching operating speed before the start winding drops out of the circuit. If the starting relay fails, becomes shorted, or physically breaks apart internally, the compressor motor may appear as an open circuit to the control board. Similarly, broken or disconnected wiring between the board and the compressor terminals will produce the same no-load condition the board is reporting.

Diagnostic priority should begin with a visual inspection of all compressor wiring harnesses and terminal connections, followed by testing the starting relay by shaking it for rattling (indicating a broken internal contact) and checking for continuity. If the relay tests good, the compressor windings should be tested with a multimeter across each winding pair: start to common, run to common, and start to run. An open reading on any winding pair confirms internal compressor motor failure.

Source: manufacturer service documentation.

Common causes of 60 6 60

  1. 01

    Failed starting relay

    Part replacement

    The starting relay assists the compressor motor in starting up. If the relay's internal contact breaks apart, the compressor circuit appears open to the control board. Shake the relay near your ear; a rattling sound confirms a broken internal component.

  2. 02

    Broken or disconnected wiring

    Wiring / connection

    A loose, corroded, or physically broken wire between the control board and the compressor terminals will cause the board to detect no load. Inspect the full wiring harness from the board to the compressor terminals for any visible damage or unplugged connectors.

  3. 03

    Open compressor winding

    Part replacement

    The compressor motor contains start, run, and common windings. If any winding has burned open internally, the compressor draws no current. Testing each winding pair with a multimeter for continuity will confirm this failure.

  4. 04

    Loose or corroded compressor terminal connections

    Wiring / connection

    The spade terminals at the compressor pins can loosen or corrode over time, creating an intermittent or permanent open in the circuit. Inspect each terminal for fit and oxidation and reseat or clean connections as needed.

  5. 05

    Control board output failure

    Part replacement

    If the board's compressor output relay or driver circuit has failed, it may not be delivering power to the compressor circuit at all, which would also register as an open load. This should be considered after wiring and compressor components have been ruled out.

See the test procedure for each cause

Frequently asked questions about 60 6 60

What does 60 6 60 mean on a Sub-Zero refrigerator?
Error code 60 6 60 means the refrigerator's control system attempted to run the compressor but detected no electrical load present. This indicates a break in the compressor circuit, which can be caused by a failed starting relay, open compressor windings, or a wiring fault. The refrigerator will not cool properly while this fault is active.
Can I fix error code 60 6 60 myself?
Some portions of the diagnosis are accessible to a knowledgeable DIYer, such as inspecting wiring connections and testing the starting relay by checking for a rattle or testing continuity. However, replacing a compressor requires recovering refrigerant, which requires EPA certification and specialized equipment. If the compressor itself has failed, professional service is necessary.
Is it safe to keep using my Sub-Zero refrigerator when error 60 6 60 is showing?
When this error is active, the compressor is not running, which means the unit is not maintaining safe food storage temperatures. You should transfer perishable food to another refrigerator as soon as possible and arrange for service promptly. Continuing to store food in a unit displaying this fault risks food spoilage.
How much does it cost to repair error code 60 6 60 on a Sub-Zero refrigerator?
Repair costs vary significantly depending on the root cause. A starting relay replacement is a relatively inexpensive repair, typically in the range of $100 to $300 including labor. A compressor replacement on a Sub-Zero unit is a major repair that can range from $700 to $2,000 or more depending on the model and labor rates in your area. A control board replacement falls somewhere between those two extremes.
Will resetting my Sub-Zero refrigerator clear error code 60 6 60?
A reset may temporarily clear the error code from the display, but the code will return if the underlying electrical fault has not been corrected. The control board monitors the compressor circuit continuously, and any persistent open load condition will trigger the fault again on the next compressor start attempt. The root cause must be diagnosed and repaired for the error to stay cleared.

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