Krupps AL-03 Error Code

What does Krupps AL-03 mean?

AL-03 on a Krupps dishwasher indicates a faulty tank probe: the tank probe does not seem to be connected — it is interrupted or shorted.

Symptoms

• ALARM light flashing on the control panel
• 'AL' on the left digit LEDs with the code on the right
• Cycle start button shows red (alarm state)
• Tank temperature not read correctly
• Wash performance affected because tank temperature is unknown

Common causes

• Tank probe not connected to the power board
• Tank probe wiring interrupted (open circuit)
• Tank probe shorted
• Loose or damaged probe terminal

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Diagnostic steps

1. Request a technician

   The manual directs the final user to request the intervention of a technician for AL-03; the checks below are technician-level.

2. Check the probe connection on the board

   Technician check 1: verify the tank temperature probe is connected correctly on the power board.

3. Check the probe terminal

   Technician check 2: verify the tank probe terminal is connected correctly.

4. Replace the probe

   Technician check 3: replace the tank probe if it remains interrupted or shorted after the connection checks.

When to call a professional

AL-03 is a probe/wiring fault the manual hands to a technician. If powering the dishwasher off and on does not clear it, call qualified service. Verifying the tank probe's connection at the power board, checking the terminal and replacing the probe all require opening the machine and working on the control board, which is technician work rather than an operator task.