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Error code reference

Fisher & Paykel Washer Error Code 113

AC pump thermistor short circuit

Fisher & Paykel codesFisher & Paykel washer codes

AC pump thermistor short circuit - Motor Control Module can no longer monitor AC pump triac temperatures correctly.

First step from the service manual

Replace Motor Control Module.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What 113 means on a Fisher & Paykel washer

Error code 113 on a Fisher & Paykel washer indicates a short circuit condition in the AC pump thermistor circuit. The Motor Control Module continuously monitors the temperature of the AC pump triac, a semiconductor component responsible for controlling alternating current to the drain pump motor. When the thermistor circuit shorts, the resistance drops to near zero, sending an out-of-range signal to the Motor Control Module that it cannot interpret as a valid temperature reading. Because the module can no longer verify safe operating temperatures for the triac, it triggers this fault to prevent potential thermal damage.

The AC pump triac is a heat-generating component, and accurate thermistor feedback is essential for protecting it during pump operation. A short circuit in this thermistor circuit can originate from a failed thermistor with a collapsed internal resistance, damaged wiring between the thermistor and the Motor Control Module, or a fault within the module itself where the thermistor input circuit has failed internally. Moisture ingress, physical damage to the wiring harness, and component aging are all common contributors to this type of fault.

Because the first diagnostic step points directly to replacing the Motor Control Module, the thermistor sensing circuit is likely integrated into the module rather than being a fully discrete external component. Technicians should inspect the wiring harness connected to the module for visible damage, pinching, or corrosion before condemning the module, but if wiring checks out, module replacement is the indicated repair.

Source: manufacturer service documentation.

Common causes of 113

  1. 01

    Failed Motor Control Module

    Part replacement

    The thermistor sensing circuit inside the Motor Control Module can fail internally, causing a permanent short circuit reading regardless of external wiring condition. This is the most likely cause and the first recommended replacement.

  2. 02

    Short circuit in thermistor wiring harness

    Wiring / connection

    The wiring connecting the thermistor circuit to the Motor Control Module may have two conductors pinched or chafed together, creating a short. Inspect the harness for any crushed, melted, or abraded sections, especially near routing clips and chassis edges.

  3. 03

    Moisture or corrosion in connector

    Wiring / connection

    Water ingress into the harness connector at the Motor Control Module can bridge thermistor circuit pins and simulate a short circuit. Check the connector for discoloration, corrosion, or moisture and clean or replace as needed.

  4. 04

    Defective AC pump thermistor

    Part replacement

    If the thermistor itself is a discrete component, an internal failure can cause its resistance to collapse to near zero, appearing as a short circuit to the Motor Control Module. Verify whether the thermistor is a separate replaceable component before proceeding to module replacement.

See the test procedure for each cause

Frequently asked questions about 113

What does 113 mean on a Fisher & Paykel washer?
Error code 113 means the Motor Control Module has detected a short circuit in the AC pump thermistor circuit. The thermistor normally monitors the temperature of the pump triac, and a short circuit prevents the module from reading accurate temperature data. To protect the machine from potential thermal damage, the washer stops operation and displays this fault code. Resolving the issue typically requires replacing the Motor Control Module.
Can I fix error code 113 on my Fisher & Paykel washer myself?
Fixing this error requires replacing the Motor Control Module, which involves working with electrical components inside the washer. Technicians with appliance repair experience can perform this repair, but it is not recommended for most homeowners due to the complexity and the electrical safety risks involved. Before replacing the module, inspect the wiring harness connected to it for any visible damage or moisture that might be causing the short.
Is it safe to keep using my washer when error code 113 appears?
It is not recommended to continue using the washer while this error is active. The Motor Control Module can no longer monitor the AC pump triac temperature, which means there is no thermal protection for that component during pump operation. Continued use could potentially lead to further damage to the control module or other related components.
How much does it cost to repair Fisher & Paykel washer error code 113?
The cost to repair error code 113 depends primarily on the price of the Motor Control Module and labor if a technician performs the work. Module replacement parts typically range from around 150 to 350 dollars depending on the model, and professional labor can add another 80 to 150 dollars on top of the part cost. Getting a quote from an authorized service technician before proceeding is advisable.
Will resetting my Fisher & Paykel washer clear error code 113?
A power reset may temporarily clear the error code display, but it will not resolve the underlying short circuit condition in the thermistor circuit. The code will return as soon as the Motor Control Module attempts to read the thermistor again during a wash cycle. A proper repair addressing the wiring harness or replacing the Motor Control Module is required to permanently clear this fault.

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