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Error code reference

Hotpoint Dishwasher Error Code AL07

Turbine damaged

Hotpoint codesHotpoint dishwasher codes

Turbine damaged - The main PCB has detected water in the tank via the pressure switch without receiving any associated fill signal from the turbine.

First step from the service manual

Check turbine connector for disconnection; check turbine cables for damage; check Main PCB/water meter turbine; check if turbine is faulty or wet; check if more than 1 litre of water has been filled manually to the tank.

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

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What AL07 means on a Hotpoint dishwasher

The AL07 error code on a Hotpoint dishwasher indicates a turbine fault, specifically a conflict between the pressure switch signal and the water meter turbine signal. The main PCB monitors both the pressure switch (which detects water presence in the tank) and the turbine (which counts water flow pulses during the fill cycle). When the PCB detects water in the tank via the pressure switch but receives no corresponding fill signal from the turbine, it flags AL07. This situation tells the control board that water has entered the tub through a means it cannot account for, which points to a failed or non-functioning turbine sensor rather than an actual overfill or flood condition in most cases.

The turbine, also referred to as the water meter turbine, is a small flow-sensing component integrated into the water inlet path. As water flows in during a fill cycle, the turbine spins and generates pulses that the PCB uses to measure the volume of water admitted. If the turbine is physically damaged, has a disconnected or damaged connector, or if its internal components are wet or corroded, it will fail to send those pulses. The PCB then sees tank water presence without a fill event, triggering the fault.

A less obvious but important cause is manual water introduction. If more than approximately 1 litre of water has been poured directly into the dishwasher tub, the pressure switch will activate while the turbine remains idle, replicating the exact fault signature. Diagnostics should therefore begin with a physical inspection of the turbine connector and wiring harness, followed by testing the turbine itself for damage or moisture ingress, and finally evaluating the main PCB if all other components check out.

Source: manufacturer service documentation.

Common causes of AL07

  1. 01

    Faulty or damaged turbine

    Part replacement

    The water meter turbine may be physically broken or internally damaged, preventing it from generating the flow pulses the PCB expects during a fill cycle. Inspect the turbine for visible damage and test its function directly.

  2. 02

    Disconnected turbine connector

    Wiring / connection

    The electrical connector linking the turbine to the main PCB may have come loose, cutting off the signal entirely. Check that the connector is fully seated and free from corrosion or debris.

  3. 03

    Damaged turbine wiring

    Wiring / connection

    The cables running between the turbine and the PCB may be chafed, pinched, or broken, interrupting signal transmission. Trace the full length of the wiring harness and look for visible damage or breaks.

  4. 04

    Moisture or water ingress into the turbine

    Wiring / connection

    If the turbine housing has been exposed to water internally, its sensing components can short or stop functioning correctly. Check the turbine for signs of wetness or water contamination and allow it to dry before retesting.

  5. 05

    Manual water addition to the tub

    Wiring / connection

    If more than 1 litre of water was poured directly into the dishwasher tub, the pressure switch activates without any turbine flow signal, triggering AL07 as a false fault. Confirm no manual filling occurred before proceeding with component diagnostics.

See the test procedure for each cause

Frequently asked questions about AL07

What does AL07 mean on a Hotpoint dishwasher?
AL07 indicates a turbine fault where the main PCB has detected water in the tank via the pressure switch but received no fill signal from the water meter turbine. This conflict between the two signals causes the control board to flag the error. It most commonly points to a damaged, disconnected, or wet turbine rather than an actual water leak or overfill event.
Can I fix an AL07 error myself without calling a technician?
Some causes of AL07 are straightforward to address at home, such as reseating a loose turbine connector or checking whether water was accidentally poured into the tub. However, if the turbine itself is physically damaged or the wiring harness is broken, replacement parts will be needed and the repair may require disassembly of the water inlet assembly. If you are comfortable working around appliance wiring and connectors, the connector and cable checks are reasonable DIY starting points.
Is it safe to use my dishwasher while AL07 is showing?
It is not advisable to continue running the dishwasher with AL07 active. Because the control board cannot accurately track how much water is entering the tub, it cannot properly manage the fill cycle, which could result in underfilling or potential overfilling. Resolve the fault before running further wash cycles.
Will resetting the dishwasher clear the AL07 error?
A reset may temporarily clear the AL07 code, but if the underlying cause such as a faulty turbine, damaged wiring, or disconnected connector has not been addressed, the error will return during the next fill cycle when the PCB again detects the signal conflict. A reset is useful for confirming whether the fault is persistent but is not a repair in itself.
How much does it cost to repair an AL07 error on a Hotpoint dishwasher?
Repair costs vary depending on the root cause. If the fix is simply reseating a connector, there may be no parts cost, though a service call fee typically applies if a technician attends. Replacing a faulty water meter turbine generally involves parts costs in the range of $20 to $70 USD depending on the model, plus labour if professionally fitted. If the main PCB is at fault, costs rise considerably, often falling in the $100 to $300 USD range for parts and labour combined.

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