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Error code reference

Thor Kitchen Dishwasher Error Code E1

Longer inlet time

Thor Kitchen codesThor Kitchen dishwasher codes

Longer inlet time — faucets not opened, water intake is restricted, or water pressure is too low.

First step from the service manual

Check that faucets are opened and water intake is not restricted; verify water pressure is adequate.

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

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What E1 means on a Thor Kitchen dishwasher

The E1 error code on a Thor Kitchen dishwasher indicates that the appliance took longer than expected to fill with water during the inlet phase. The control board monitors how long the inlet valve stays open to reach the required water level. When that fill time exceeds the programmed threshold, E1 is triggered to alert the user that something is preventing adequate water flow into the tub.

The primary systems involved are the water supply line, the inlet solenoid valve, and the water pressure feeding the unit. The dishwasher relies on sufficient household water pressure to open the inlet valve fully and fill the tub within a defined window. If pressure is too low, the valve cannot deliver water fast enough and the timer expires before the tub reaches the correct level. Similarly, a kinked supply hose, a closed shutoff valve, or a clogged inlet screen will restrict flow and produce the same result.

Before suspecting internal component failure, the first diagnostic step is to confirm that the hot water shutoff valve beneath or near the dishwasher is fully open and that the supply hose has no kinks or compression points. Check the inlet valve filter screen for mineral deposits or debris, which can significantly reduce flow rate over time. Household water pressure should generally be within the range specified for the appliance to fill correctly. If supply-side conditions are confirmed normal and E1 persists, the inlet solenoid valve itself may be faulty and require testing or replacement.

Source: manufacturer service documentation.

Common causes of E1

  1. 01

    Closed or partially closed water supply valve

    Wiring / connection

    The shutoff valve under the sink or behind the dishwasher may not be fully open, severely restricting water flow. Turn the valve counterclockwise until it stops to confirm it is fully open.

  2. 02

    Low household water pressure

    Wiring / connection

    If water pressure throughout the home is low, the dishwasher inlet valve cannot deliver water fast enough to satisfy the fill timer. Test pressure at a nearby faucet to get a general sense of available flow.

  3. 03

    Kinked or pinched inlet hose

    Wiring / connection

    The supply hose running from the shutoff valve to the dishwasher inlet can become kinked, especially if the unit was recently installed or moved. Inspect the full length of the hose for bends or compression points.

  4. 04

    Clogged inlet valve filter screen

    Wiring / connection

    A fine mesh screen sits at the inlet valve connection point and can accumulate mineral scale or debris over time, restricting water flow into the unit. The screen can usually be removed and cleaned without replacing the valve.

  5. 05

    Faulty water inlet solenoid valve

    Part replacement

    If the solenoid valve itself is defective, it may not open fully even when energized, causing slow fill and triggering E1. A failed valve will need to be replaced to restore normal fill operation.

See the test procedure for each cause

Frequently asked questions about E1

What does E1 mean on a Thor Kitchen dishwasher?
E1 on a Thor Kitchen dishwasher means the appliance detected a longer than normal water inlet time, indicating that the tub could not fill within the expected window. This points to a problem with the water supply reaching the unit rather than an internal electronic fault. Common causes include a closed shutoff valve, low water pressure, a kinked hose, or a clogged inlet screen.
How do I fix the E1 error on my Thor Kitchen dishwasher?
Start by confirming the water shutoff valve is fully open and the supply hose has no kinks. Next, check the inlet valve filter screen for debris or mineral buildup and clean it if needed. If water pressure in your home is adequate and all supply connections are clear, but E1 still appears, the inlet solenoid valve may need to be tested and potentially replaced.
Will resetting my Thor Kitchen dishwasher clear the E1 error?
Resetting the dishwasher may clear the E1 code temporarily, but it will return if the underlying supply issue is not corrected. The error is triggered by a real condition the control board detected during the fill cycle. Resolving the water supply problem first is necessary for the reset to be effective long term.
Is the E1 error on a Thor Kitchen dishwasher a safety concern?
E1 is not a safety hazard. The dishwasher stops the cycle when it cannot fill properly, which actually prevents potential issues associated with running without adequate water. It is a protective alert, not a warning about electrical or structural danger.
How much does it cost to repair an E1 error on a Thor Kitchen dishwasher?
If the fix is simply opening a shutoff valve or clearing a kinked hose, there is no parts cost involved. Cleaning a clogged inlet screen is also typically a no-cost repair. If the inlet solenoid valve needs replacement, parts and labor combined can range from roughly 80 to 200 dollars depending on your location and whether you hire a technician.

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