mypros+
Error code reference

Fisher & Paykel Dryer Error Code 105

There is no communication between the control board and user interface (UI communication bus failure).

Fisher & Paykel codesFisher & Paykel dryer codes

There is no communication between the control board and user interface (UI communication bus failure).

MyPros+ Max

Get the full diagnostic procedure for 105.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What 105 means on a Fisher & Paykel dryer

Error code 105 on a Fisher & Paykel dryer indicates a communication bus failure between the main control board and the user interface (UI) board. These two boards continuously exchange data signals over a dedicated communication bus, allowing the control board to receive user input commands and send operational status back to the display. When this data link is interrupted or absent, the dryer cannot function safely or predictably, and error 105 is triggered to alert the technician to the communication breakdown.

The most common hardware causes of this fault include damaged or disconnected wiring harnesses between the two boards, corrosion on connector pins, or a failed component on either the control board or the UI board itself. The communication bus typically carries low-voltage data signals, so even minor connector issues, broken wire strands, or oxidized terminals can disrupt the signal entirely. In some cases, a power surge or intermittent voltage irregularity can corrupt the firmware state of one or both boards, producing the error without obvious physical damage.

Diagnosing this fault requires a systematic inspection of the wiring and connectors linking the UI board to the main control board, followed by continuity checks along the harness. If the wiring checks out, swapping one board at a time is the most reliable method to isolate the failed component. Both the control board and the UI board are potential sources of the fault, so replacement of one or both may ultimately be required if no wiring defect is found.

Source: manufacturer service documentation.

Common causes of 105

  1. 01

    Loose or disconnected wiring harness

    Wiring / connection

    The ribbon cable or wiring harness connecting the UI board to the control board may have come loose, especially after any recent servicing. Visually inspect and reseat all connectors between the two boards.

  2. 02

    Corroded or damaged connector pins

    Wiring / connection

    Oxidation or physical damage on the connector terminals can interrupt the low-voltage communication signal. Inspect pins for corrosion, bending, or burn marks and clean or replace the connector as needed.

  3. 03

    Broken or shorted wire in the harness

    Part replacement

    A wire strand within the harness may be broken internally or shorting against the dryer chassis, causing the communication signal to drop. Perform a continuity check along the full length of the harness to identify any open or shorted circuit.

  4. 04

    Failed user interface (UI) board

    Part replacement

    The UI board itself may have failed due to a power surge, component failure, or accumulated wear, leaving it unable to transmit or receive signals. If wiring is intact, swapping the UI board is the next diagnostic step.

  5. 05

    Failed main control board

    Part replacement

    The main control board may have lost the ability to maintain the communication bus, particularly after a voltage spike or firmware corruption. If replacing the UI board does not resolve the fault, the main control board should be tested and replaced.

See the test procedure for each cause

Frequently asked questions about 105

What does 105 mean on a Fisher & Paykel dryer?
Error code 105 means the main control board and the user interface board have lost communication with each other over the internal data bus. The dryer cannot operate normally without this link established. The fault is most often caused by a wiring or connector issue, though either board can also be the source of the problem.
Can I fix error code 105 myself on my Fisher & Paykel dryer?
A knowledgeable DIYer can inspect and reseat the wiring connectors between the control board and the UI board, which resolves the fault in some cases. However, if the issue lies with a failed board or a broken wire within a harness, the repair becomes more involved and requires comfort working with appliance electronics. If you are not confident working inside the dryer cabinet, a qualified technician is recommended.
Will resetting my Fisher & Paykel dryer clear error code 105?
A power reset by unplugging the dryer for several minutes may temporarily clear the error if it was triggered by a transient voltage irregularity or a firmware glitch. However, if a physical wiring fault or failed board is the root cause, the error will return as soon as the dryer attempts to re-establish communication. A reset alone is not a fix for a hardware fault.
Is it safe to use my Fisher & Paykel dryer when error code 105 is showing?
No, the dryer should not be used while error code 105 is active. Because the control board and UI board cannot communicate, the dryer cannot reliably receive or execute commands, and normal safety monitoring may be compromised. The dryer should remain unplugged until the fault is diagnosed and repaired.
How much does it cost to repair error code 105 on a Fisher & Paykel dryer?
If the fault is a loose connector, the repair cost may only involve a service call fee, typically in the range of $75 to $150 depending on your location. If a UI board or main control board requires replacement, parts alone can range from $100 to $300 or more per board, with total repair costs including labor often falling between $200 and $500. Getting a diagnosis before authorizing parts replacement helps avoid unnecessary expense.

Related Fisher & Paykel dryer codes

All Fisher & Paykel dryer codes
View all 54 Fisher & Paykel dryer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass