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Error code reference

Fisher & Paykel Refrigerator Error Code INV-11

Compressor starts and stops.

Fisher & Paykel codesFisher & Paykel refrigerator codes

Compressor starts and stops.

First step from the service manual

Let compressor rest for 5 mins to allow pressure to equalise then try again.

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

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What INV-11 means on a Fisher & Paykel refrigerator

The INV-11 error code on a Fisher & Paykel refrigerator indicates that the inverter-driven compressor is cycling on and off abnormally rather than running through a complete cooling cycle. The inverter system controls compressor speed and starting behavior, and this fault is logged when the compressor fails to sustain operation after being commanded to run. The most immediate cause is often residual refrigerant pressure imbalance across the system, which can place excessive load on the compressor motor at startup and cause the inverter to shut the unit down as a protective measure.

When a compressor shuts down mid-cycle, pressure on the high side of the refrigerant circuit remains elevated relative to the low side. If a restart is attempted before this pressure equalizes, the compressor motor must work against that differential, potentially exceeding the inverter's current threshold and triggering another shutdown. This is why the first diagnostic step is to allow the compressor a 5-minute rest period. During this window, refrigerant pressure naturally equalizes through the system, allowing a clean, low-resistance restart.

If the INV-11 error persists after allowing adequate pressure equalization time, the fault points toward component-level issues. Possible causes include a failing compressor with degraded winding resistance, a faulty inverter board that is misreading load conditions, refrigerant charge problems affecting system pressures, or condenser airflow restrictions causing head pressure to spike. Each of these conditions prevents the compressor from completing a stable run cycle and will require further electrical and mechanical diagnostics beyond the initial rest-and-retry procedure.

Source: manufacturer service documentation.

Common causes of INV-11

  1. 01

    Refrigerant pressure imbalance

    Wiring / connection

    After a compressor shutdown, high-side refrigerant pressure remains elevated and prevents a successful restart. Allowing 5 minutes of rest lets the pressure equalize so the compressor can start under normal load.

  2. 02

    Condenser airflow restriction

    Wiring / connection

    Blocked condenser coils or a failing condenser fan cause head pressure to spike, pushing the inverter past its current limits and triggering a protective shutdown. Check the condenser coils and fan for dust buildup or obstruction.

  3. 03

    Faulty inverter control board

    Part replacement

    The inverter board regulates compressor startup current and run speed. A defective board may incorrectly detect an overload condition and cut power to the compressor prematurely, even when the compressor itself is functional.

  4. 04

    Failing or worn compressor

    Part replacement

    A compressor with degraded motor windings draws excessive current on startup, which the inverter reads as a fault condition and responds to by shutting the unit down. This is identified through resistance testing of the compressor windings.

  5. 05

    Incorrect refrigerant charge

    Part replacement

    An overcharged or undercharged refrigerant system alters operating pressures in ways that stress the compressor during startup. This requires a certified technician with refrigerant handling equipment to diagnose and correct.

See the test procedure for each cause

Frequently asked questions about INV-11

What does INV-11 mean on a Fisher & Paykel refrigerator?
INV-11 means the refrigerator's inverter-controlled compressor is starting and then stopping before completing a proper cooling cycle. The inverter system detects an abnormal load or operating condition and shuts the compressor down as a protective measure. The first recommended step is to let the compressor rest for 5 minutes so refrigerant pressures can equalize before attempting a restart. If the error continues after that rest period, further diagnosis of the compressor, inverter board, and refrigerant system is needed.
How do I fix the INV-11 error on my Fisher & Paykel refrigerator?
Start by letting the refrigerator sit with the compressor off for at least 5 minutes to allow refrigerant pressure to equalize, then see if the compressor runs normally on restart. If the error returns, check the condenser coils and fan for blockages that could be causing excessive head pressure. Persistent faults after those steps typically require a technician to test the inverter board, compressor windings, and refrigerant charge level.
Will resetting my Fisher & Paykel refrigerator clear the INV-11 error?
A reset may temporarily clear the error code, but if the underlying cause has not been resolved, the INV-11 will return once the compressor attempts to run again. The 5-minute rest period is effectively a soft reset that addresses the most common cause, which is pressure imbalance. If the fault is related to a failing component such as the inverter board or compressor, resetting will not provide a lasting fix.
Is an INV-11 error on a Fisher & Paykel refrigerator a safety concern?
The INV-11 code itself reflects a protective function designed to prevent compressor damage, so it is not an immediate safety hazard to people in the home. However, if the compressor cannot sustain operation, the refrigerator will lose its ability to maintain safe food storage temperatures over time. Addressing the fault promptly will protect both the appliance and the food stored inside.
How much does it cost to repair an INV-11 error on a Fisher & Paykel refrigerator?
If the issue is simply pressure imbalance, there is no repair cost beyond a service call if a technician is involved. Condenser cleaning is a low-cost fix. If the inverter board needs replacement, parts and labor typically range from $200 to $500 depending on the model and local labor rates. Compressor replacement is the most expensive scenario, generally ranging from $400 to $900 or more including labor and refrigerant handling.

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