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Error code reference

Fisher & Paykel Refrigerator Error Code 44

The PC return duct heater current is too high (only seen with data download using Smart tool).

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The PC return duct heater current is too high (only seen with data download using Smart tool).

First step from the service manual

Check for short circuit of PC return duct heater. Check the resistance of the heater.

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

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What 44 means on a Fisher & Paykel refrigerator

Error code 44 on a Fisher & Paykel refrigerator indicates that the PC (Plastic Cabinet) return duct heater is drawing excessive current. This fault is specifically associated with the return duct heater circuit and is only detectable through a data download using the Fisher & Paykel Smart diagnostic tool, meaning it will not typically surface as a visible fault code on the control panel under normal operation. The return duct heater is a defrost-assist or anti-condensation heater positioned in the return air duct path within the refrigerator cabinet, and it is designed to operate within a defined current range.

When current through this heater exceeds the expected threshold, the control system logs error code 44. The most immediate concern is a short circuit within the heater element itself or within the wiring harness connected to it. A shorted heater will draw more current than its rated load, potentially stressing the control board's output circuit. Diagnosing this fault begins with a resistance measurement of the heater element: a healthy heater will show a defined resistance value, while a shorted element will show near-zero resistance.

Beyond the heater element itself, the wiring harness between the control board and the heater should be inspected for any points where insulation has worn through or conductors have come into contact with the cabinet or other wiring. Moisture ingress in the duct area can also create low-resistance leakage paths that mimic a shorted heater. Resolving this fault typically requires replacing the faulty heater or repairing the affected wiring before the error can be cleared.

Source: manufacturer service documentation.

Common causes of 44

  1. 01

    Shorted PC return duct heater element

    Part replacement

    The heater element itself may have an internal short circuit, causing it to draw excessive current. A resistance check of the heater will show near-zero or abnormally low resistance compared to its rated value.

  2. 02

    Damaged wiring harness to the heater

    Part replacement

    Worn or pinched insulation on the wiring between the control board and the heater can cause conductors to contact each other or the cabinet, creating a low-resistance path. Visual inspection of the harness routing in the duct area should be performed.

  3. 03

    Moisture or ice contamination in the duct area

    Wiring / connection

    Water or ice accumulation near the heater connector or element can create leakage current paths that register as an overcurrent condition. Inspect for signs of moisture ingress around the heater mounting location.

  4. 04

    Faulty connector or terminal short

    Part replacement

    A corroded or collapsed connector at the heater plug can cause two terminals to bridge, shorting the circuit. Inspecting and testing the connector for continuity between terminals can identify this issue.

See the test procedure for each cause

Frequently asked questions about 44

What does 44 mean on a Fisher & Paykel refrigerator?
Error code 44 means the PC return duct heater is drawing more current than expected, indicating a likely short circuit in the heater element or its wiring. This code is not visible on the standard display and can only be retrieved using the Fisher & Paykel Smart diagnostic tool during a data download. The return duct heater is a small internal heater located in the cabinet's air return duct path.
How do I fix error code 44 on a Fisher & Paykel refrigerator?
Start by checking the resistance of the PC return duct heater with a multimeter. A shorted heater will show very low or near-zero resistance and will need to be replaced. Also inspect the wiring harness connected to the heater for any damage, pinched insulation, or signs of moisture. If the wiring is compromised, repair or replace the affected section before clearing the fault.
Is error code 44 on a Fisher & Paykel refrigerator a safety concern?
A shorted heater element drawing excessive current can stress the control board and wiring over time, which is worth addressing promptly. While the refrigerator may continue to operate, leaving a short circuit unresolved increases the risk of further component damage. It is advisable to have the heater and wiring inspected as soon as possible.
Will resetting the refrigerator clear error code 44?
A power reset may temporarily clear the logged fault, but if the underlying short circuit in the heater or wiring is still present, the excessive current condition will persist and the error will be logged again. The root cause must be diagnosed and repaired for the fault to be resolved permanently. Clearing the code without addressing the short does not fix the problem.
How much does it cost to repair error code 44 on a Fisher & Paykel refrigerator?
Repair costs depend on whether the heater element, wiring, or both need replacement. Parts and labor for a heater replacement typically range from $100 to $300, depending on your location and service provider. If the control board has been damaged by the overcurrent condition, costs could be higher. Getting a diagnostic assessment from a qualified technician before committing to repairs is recommended.

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