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Error code reference

Fisher & Paykel Refrigerator Error Code 8

Evaporator inlet sensor hot

Fisher & Paykel codesFisher & Paykel refrigerator codes

Evaporator inlet sensor hot - faulty evaporator inlet temperature sensor with resistance out of normal range (resistance less than 660 Ohms).

First step from the service manual

Check the resistance of the evaporator inlet 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 8 means on a Fisher & Paykel refrigerator

Error code 8 on a Fisher & Paykel refrigerator indicates that the evaporator inlet temperature sensor has been detected as operating outside its normal resistance range. Specifically, the sensor is reading a resistance value below 660 Ohms, which the control board interprets as a "hot" condition at the evaporator inlet. Temperature sensors in refrigeration systems are typically negative temperature coefficient (NTC) thermistors, meaning their resistance decreases as temperature rises. A reading below 660 Ohms suggests the sensor is reporting an abnormally high temperature at the evaporator inlet, or the sensor itself has failed in a way that mimics that condition.

The evaporator inlet sensor plays a critical role in the refrigerator's defrost and cooling cycle management. It monitors refrigerant temperature as it enters the evaporator coil, providing the control board with data needed to regulate compressor operation and defrost timing. When this sensor fails or produces out-of-range resistance readings, the control board can no longer trust the thermal data from that part of the system, triggering the fault code to prevent potential damage to the refrigeration circuit.

The most direct diagnostic step is to disconnect the sensor and measure its resistance with a multimeter. A reading below 660 Ohms confirms the sensor is faulty and requires replacement. It is also worth inspecting the sensor's wiring harness for shorts or damaged insulation, as a short to ground in the wiring can produce artificially low resistance readings that mimic a failed sensor.

Source: manufacturer service documentation.

Common causes of 8

  1. 01

    Failed evaporator inlet sensor

    Part replacement

    The thermistor itself has degraded internally, causing its resistance to drop below the 660 Ohm threshold. Measuring the sensor directly with a multimeter will confirm a reading below the acceptable range.

  2. 02

    Short circuit in the sensor wiring

    Wiring / connection

    Damaged or pinched wiring between the sensor and the control board can create a short that artificially lowers the resistance reading. Inspect the harness for visible damage, chafing, or contact with sharp metal edges.

  3. 03

    Corroded or loose connector

    Wiring / connection

    Moisture inside the refrigerator cabinet can corrode the sensor connector contacts, creating abnormal resistance readings. Check the connector for corrosion, moisture ingress, or a loose fit and clean or reseat as needed.

  4. 04

    Sensor exposed to extreme heat during a defrost fault

    Part replacement

    If a previous defrost cycle ran excessively long due to another fault, the sensor may have been exposed to high temperatures that permanently altered its resistance characteristics. Review the refrigerator's fault history if accessible.

See the test procedure for each cause

Frequently asked questions about 8

What does 8 mean on a Fisher & Paykel refrigerator?
Error code 8 on a Fisher & Paykel refrigerator indicates a fault with the evaporator inlet temperature sensor. The sensor's resistance has dropped below 660 Ohms, which is outside the normal operating range. The control board flags this as an "evaporator inlet sensor hot" condition, meaning the sensor is either genuinely detecting abnormal heat at that location or has failed electrically. The sensor should be tested and replaced if confirmed faulty.
Can I fix error code 8 on my Fisher & Paykel refrigerator myself?
A knowledgeable DIYer can perform the initial diagnosis by disconnecting the evaporator inlet sensor and measuring its resistance with a multimeter. If the reading is below 660 Ohms, the sensor needs to be replaced. The repair involves accessing the evaporator area inside the refrigerator, which typically requires removing interior panels. If you are not comfortable with this level of disassembly, a qualified appliance technician is recommended.
Is it safe to keep using my refrigerator when error code 8 is showing?
A faulty evaporator inlet sensor can affect the refrigerator's ability to manage its cooling and defrost cycles properly, which may result in inconsistent temperatures. Food safety could be compromised if the unit is not cooling correctly. It is advisable to check the actual temperature inside the refrigerator and avoid storing perishables until the fault is resolved.
How much does it cost to repair error code 8 on a Fisher & Paykel refrigerator?
The cost depends on whether the issue is a failed sensor or a wiring problem. A replacement evaporator inlet temperature sensor part typically costs in the range of $20 to $60. If a technician is needed for diagnosis and installation, total repair costs including labor could range from $100 to $250 depending on your location and the extent of the work required.
Will resetting my Fisher & Paykel refrigerator clear error code 8?
Resetting the refrigerator by disconnecting power may temporarily clear the displayed error code, but the fault will return if the underlying sensor issue has not been corrected. Since error code 8 is triggered by a measured resistance value below 660 Ohms, the code will reappear as soon as the control board takes a new sensor reading. The sensor or its wiring must be repaired or replaced to permanently resolve the fault.

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