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Error code reference

Fisher & Paykel Refrigerator Error Code 9

Evaporator outlet sensor cold

Fisher & Paykel codesFisher & Paykel refrigerator codes

Evaporator outlet sensor cold - faulty evaporator outlet temperature sensor with resistance out of normal range (resistance greater than 45K Ohms).

First step from the service manual

Check the resistance of the evaporator outlet temperature sensor. If faulty, replace.

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

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What 9 means on a Fisher & Paykel refrigerator

Error code 9 on a Fisher & Paykel refrigerator indicates that the evaporator outlet temperature sensor has reported a resistance value greater than 45K Ohms, which falls outside the acceptable operating range. The evaporator outlet sensor is a negative temperature coefficient (NTC) thermistor positioned at the outlet of the evaporator coil. Its job is to monitor the temperature of refrigerant leaving the evaporator so the control board can regulate defrost cycles and compressor operation accurately. When resistance climbs above 45K Ohms, the board interprets this as an implausibly cold or open-circuit reading and flags the fault.

The most direct diagnostic step is measuring the sensor's resistance with a multimeter. A reading above 45K Ohms confirms the sensor itself is out of specification. This can result from a broken internal element, corrosion at the connector pins, moisture intrusion into the sensor housing, or physical damage to the wiring harness between the sensor and the control board. In some cases, a loose or oxidized connector will cause intermittent high-resistance readings even when the sensor element itself is intact.

Because the evaporator outlet sensor feeds directly into defrost and cooling cycle logic, a faulty reading can cause the refrigerator to run inefficient defrost cycles or mismanage compressor run times. If the sensor is confirmed faulty after resistance testing, replacement is the standard resolution. Inspect the wiring harness and connector carefully before condemning the sensor, as a corroded pin or damaged wire can produce the same out-of-range resistance reading at a lower repair cost.

Source: manufacturer service documentation.

Common causes of 9

  1. 01

    Failed sensor element

    Part replacement

    The NTC thermistor inside the evaporator outlet sensor has degraded or broken internally, causing resistance to exceed 45K Ohms. Measuring the sensor directly with a multimeter will confirm a reading above the acceptable threshold.

  2. 02

    Corroded or loose connector

    Wiring / connection

    Moisture near the evaporator can corrode the sensor's wiring connector, increasing resistance at the connection point rather than within the sensor itself. Inspect and clean the connector pins before replacing the sensor.

  3. 03

    Damaged wiring harness

    Part replacement

    Physical damage, kinking, or a broken wire in the harness between the sensor and the control board can produce an artificially high resistance reading. Visually trace the wiring from the sensor back to the board and check for any obvious breaks or chafe points.

  4. 04

    Moisture or ice contamination of the sensor

    Wiring / connection

    If ice has built up around the evaporator coil and encased the sensor, it can interfere with accurate readings and in some cases damage the sensor housing. Running a manual defrost cycle and retesting the sensor resistance will help determine if this is a contributing factor.

See the test procedure for each cause

Frequently asked questions about 9

What does 9 mean on a Fisher & Paykel refrigerator?
Error code 9 means the evaporator outlet temperature sensor has a resistance reading greater than 45K Ohms, which is outside the normal operating range. The sensor is a thermistor mounted at the outlet of the evaporator coil and is used by the control board to manage cooling and defrost cycles. This code indicates the sensor is faulty or there is a wiring issue preventing an accurate reading. A resistance test with a multimeter on the sensor is the recommended first diagnostic step.
Can I fix error code 9 on my Fisher & Paykel refrigerator myself?
If you are comfortable using a multimeter and have basic appliance repair experience, you can test the evaporator outlet sensor's resistance yourself. If the reading is above 45K Ohms, the sensor needs to be replaced, which involves accessing the evaporator compartment and disconnecting the sensor connector. The wiring harness and connector should also be inspected for damage or corrosion before ordering a replacement sensor. If you are not confident working inside the refrigerator's sealed sections, a qualified technician is recommended.
Is it safe to keep using my refrigerator while error code 9 is displayed?
A faulty evaporator outlet sensor can cause the refrigerator to mismanage its defrost cycles and compressor operation, which may result in inconsistent temperatures or excessive frost buildup over time. Food safety could be at risk if the refrigerator is not maintaining proper temperatures. It is advisable to check the actual temperature inside the fridge and freezer compartments with a separate thermometer while you arrange for a repair.
Will resetting my Fisher & Paykel refrigerator clear error code 9?
A reset may temporarily clear the displayed error code, but it will return if the underlying sensor fault is not repaired. Because the code is triggered by the sensor's resistance reading being out of range, the control board will detect the fault again as soon as it reads the sensor. A proper repair, either replacing the sensor or fixing the wiring issue, is needed to permanently resolve the error.
How much does it cost to repair error code 9 on a Fisher & Paykel refrigerator?
Repair costs vary depending on whether the issue is the sensor itself, the wiring harness, or the connector. The evaporator outlet temperature sensor part alone typically costs in the range of $20 to $60, while a professional repair including labor could range from $100 to $250 or more depending on your location and the technician's rates. If the wiring harness requires replacement, costs may be higher. Getting a diagnostic quote from a Fisher & Paykel authorized service technician will provide the most accurate estimate.

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