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Error code reference

Fisher & Paykel Refrigerator Error Code 105

Communications fault between the cabinet module, the display module/user interface and the power/control…

Fisher & Paykel codesFisher & Paykel refrigerator codes

Communications fault between the cabinet module, the display module/user interface and the power/control module; could be in any module or wiring harness.

First step from the service manual

Replace the display module/user interface. Wait 30 seconds after re-applying power, then retest.

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

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What 105 means on a Fisher & Paykel refrigerator

Error code 105 on a Fisher & Paykel refrigerator indicates a communications fault between three key electronic modules: the cabinet module, the display module (user interface), and the power/control module. These modules communicate with each other over a data bus or wiring harness network, and when that communication breaks down, the system logs code 105. The fault can originate in any one of the three modules or in the wiring harness connecting them, which makes isolation the central challenge in diagnosing this code.

The most common entry point for this fault is the display module or user interface, which is why the first recommended diagnostic step is replacing it and waiting at least 30 seconds after restoring power before retesting. This waiting period allows the modules to reinitialize and attempt to reestablish communication. If the error clears after the display module swap, that component was the source. If the error persists, attention shifts to the cabinet module and the power/control module, as well as the wiring harness connections between all three.

Wiring harness issues such as loose connectors, corroded terminals, or damaged conductors are also a realistic cause. Moisture intrusion, physical damage during prior service, or vibration over time can degrade connector contact quality and interrupt the signal path between modules. A thorough inspection of all harness connectors and pin contacts at each module should be performed before condemning any individual module, particularly if the display module replacement does not resolve the fault.

Source: manufacturer service documentation.

Common causes of 105

  1. 01

    Faulty display module or user interface

    Part replacement

    The display module is the most likely source of this fault. A failed or failing interface board can disrupt communication across all three modules, and replacing it is the first recommended diagnostic step.

  2. 02

    Loose or corroded wiring harness connectors

    Wiring / connection

    The connectors linking the cabinet module, display module, and power/control module can loosen or corrode over time. Inspecting each connector for poor seating, bent pins, or oxidation can identify this cause without replacing any modules.

  3. 03

    Faulty cabinet module

    Part replacement

    If replacing the display module and confirming harness integrity does not clear the fault, the cabinet module itself may have failed internally and lost the ability to communicate reliably on the data bus.

  4. 04

    Faulty power/control module

    Part replacement

    The power/control module is the third possible source of this communications fault. A failure in this module can prevent proper signaling between all three components, and it should be evaluated after ruling out the display module and wiring harness.

  5. 05

    Damaged wiring harness

    Part replacement

    Physical damage to the wiring harness from prior service, rodent activity, or pinching can break the communication signal path. A visual inspection along the full harness route can reveal cuts, abrasion, or crushed sections.

See the test procedure for each cause

Frequently asked questions about 105

What does 105 mean on a Fisher & Paykel refrigerator?
Error code 105 indicates a communications fault between three internal electronic modules: the cabinet module, the display module or user interface, and the power/control module. The breakdown in communication can originate from any of these modules or from the wiring harness that connects them. The refrigerator logs this code when the modules cannot reliably exchange data with each other.
Will resetting my Fisher & Paykel refrigerator clear error code 105?
A power reset may temporarily clear the display, but if there is an underlying hardware fault in one of the modules or a wiring issue, the code will return. The correct approach is to replace the display module, restore power, and wait at least 30 seconds before checking whether the code has cleared. A reset alone is not a fix for a genuine communications fault.
How do I fix error code 105 on a Fisher & Paykel refrigerator?
Start by replacing the display module or user interface, then restore power and wait 30 seconds before retesting. If the code persists, inspect all wiring harness connectors between the three modules for looseness or corrosion. If the harness is intact, the cabinet module or power/control module may need to be tested and replaced. Because this fault can involve multiple components, systematic elimination is the most reliable approach.
Is it safe to keep using my refrigerator while error code 105 is active?
A communications fault between control modules can affect the refrigerator's ability to regulate temperature properly, which puts food safety at risk. While the unit may continue to run in the short term, you cannot fully rely on temperature control until the fault is resolved. It is best to address the error promptly and monitor food temperatures closely in the meantime.
How much does it cost to repair error code 105 on a Fisher & Paykel refrigerator?
Repair costs depend on which component is at fault. Display module or user interface replacements are typically the least expensive part of this repair, while the cabinet module or power/control module can be more costly. Including labor, total repair costs generally range from around $150 to $400 or more depending on the part required and local service rates.

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