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Error code reference

Fisher & Paykel Dishwasher Error Code F70

Fill valve high current fault.

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Fill valve high current fault.

First step from the service manual

Check if the harness connections at the fill valve and motor controller show any signs of water damage, corrosion or arcing.

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

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What F70 means on a Fisher & Paykel dishwasher

The F70 error code on a Fisher & Paykel dishwasher indicates a fill valve high current fault. This means the motor controller has detected that the electrical current drawn by the fill valve solenoid has exceeded the expected operating threshold. The fill valve is an electrically actuated solenoid valve responsible for controlling the flow of water into the dishwasher tub during a wash cycle. When the controller measures abnormally high current through this circuit, it triggers the F70 fault and halts operation to protect the control electronics.

The most common root causes involve problems at the electrical connections rather than the valve itself. Water intrusion, corrosion, or arcing at the harness connectors between the fill valve and the motor controller can create unintended resistance changes or short-circuit conditions that cause current to spike. A compromised wiring harness with damaged insulation can allow conductors to contact each other or the chassis, also producing high current readings. In some cases, the fill valve solenoid coil itself may have developed an internal short, reducing coil impedance and drawing excess current.

Diagnosing F70 requires a systematic inspection starting at the harness connectors on both the fill valve and the motor controller. Look for discoloration, pitting, melted plastic, or corrosion deposits at the connector pins. If the connectors appear sound, the solenoid coil resistance should be measured and compared against expected values. A shorted coil will show abnormally low resistance. The wiring harness between these two components should also be inspected along its full length for chafing, pinching, or insulation breakdown.

Source: manufacturer service documentation.

Common causes of F70

  1. 01

    Corroded or damaged harness connector

    Part replacement

    Water exposure or age can cause corrosion, arcing, or pitting at the connector pins linking the fill valve to the motor controller. Inspect both connectors for discoloration, melted plastic, or green or white deposits on the pins.

  2. 02

    Shorted fill valve solenoid coil

    Part replacement

    An internal short in the solenoid coil reduces its resistance and causes it to draw excessive current. This can be identified by measuring the coil resistance with a multimeter and checking for an abnormally low reading.

  3. 03

    Damaged wiring harness

    Part replacement

    Chafed, pinched, or water-damaged wiring along the harness run between the fill valve and the motor controller can cause a short to ground or between conductors. Inspect the full length of the harness for any visible insulation damage.

  4. 04

    Faulty motor controller

    Part replacement

    If the wiring and fill valve solenoid both test within normal parameters, the motor controller itself may be misreading the current or have a damaged output circuit for the fill valve. This is a less common cause and should be considered after other components are ruled out.

See the test procedure for each cause

Frequently asked questions about F70

What does F70 mean on a Fisher & Paykel dishwasher?
F70 indicates a fill valve high current fault. The motor controller has detected that the electrical current to the fill valve solenoid is higher than normal, which causes the dishwasher to stop running. This is typically caused by corroded wiring connectors, a damaged harness, or a shorted solenoid coil. The machine shuts down to prevent damage to the control electronics.
Can I fix the F70 error myself?
A knowledgeable DIYer can perform the initial diagnostics, including visually inspecting the harness connectors at the fill valve and motor controller for corrosion or arcing, and testing the solenoid coil resistance with a multimeter. However, if the motor controller needs replacement or wiring repairs are extensive, a qualified technician is recommended. Always disconnect power to the appliance before inspecting any electrical components.
Is it safe to keep using my dishwasher when the F70 code is showing?
No, you should not continue operating the dishwasher with an active F70 fault. A high current fault in the fill valve circuit indicates a potential electrical problem that could worsen with continued use. Running the appliance under these conditions risks further damage to the motor controller or wiring, and in cases involving arcing, there is a fire hazard.
Will resetting the dishwasher clear the F70 error?
A power reset may temporarily clear the fault display, but the F70 code will return if the underlying electrical problem has not been resolved. Resetting without addressing the cause does not fix the issue and could allow a damaging high current condition to repeat. The root cause must be diagnosed and corrected before the error will stay cleared.
How much does it cost to repair a Fisher & Paykel dishwasher with an F70 error?
Repair costs vary depending on the component that needs replacing. A replacement fill valve solenoid typically costs in the range of $30 to $80 for the part, while a motor controller replacement can range from $100 to $250 or more. Adding a technician service call and labor will bring total repair costs higher, generally somewhere between $150 and $400 depending on what is required.

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