What does a flashing button on the INDESIT IDL 420 dishwasher mean and how can I resolve this issue?

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A flashing button or indicator on your INDESIT IDL 420 dishwasher is a specific alert signal. The manual distinguishes several types of flashing, each corresponding to a different situation that needs to be resolved quickly.

Cycle phase indicators (G) flashing during delayed start: If you have programmed a delayed start of 3, 6, 9, or 12 hours, the "G" indicators normally flash to indicate the countdown. This is normal operation. The cycle will start automatically at the end of the programmed delay. To cancel the delayed start and launch the program immediately, press the "H" button (delayed start selection) several times until the cycle starts.

Salt indicator (E) flashing: The red "E" indicator flashes when the salt reservoir needs to be filled. This situation is not urgent. Unscrew the cap of the reservoir located under the lower basket, pour in about 2 kg of special dishwasher salt using the provided funnel, and then screw the cap back on. After the first filling, it is normal for the indicator to remain on or flash during the next 5 cycles. If you are using "3 in 1" products, the indicator may continue to flash, which is normal.

Rapid flashing of indicators 2 and 3 (washing and rinsing): This indicates that the water tap is closed. The dishwasher emits brief sound signals for a few minutes. Immediately open the water tap fully. The machine will restart automatically after a few minutes. If you were not present, the machine stops: press the ON-OFF button to turn it off, open the tap, and wait 20 seconds before turning it back on, then reprogram and restart the cycle.

Rapid flashing of indicators 1 and 3 (prewash and rinsing): The filter is clogged with large food residues. Turn off the appliance, remove the lower basket, access the filtering group, and carefully clean the cup (C), the semi-circular filter (A), and the cylindrical filter (B) by rinsing them under running water. After correctly reassembling the filtering group in the machine, turn it back on and reprogram the cycle.

Rapid flashing of indicator 2 (washing) alone: This is an alarm for a failure of the water inlet solenoid valve. Turn off the dishwasher and turn it back on after one minute. If the alarm persists, close the water tap (to avoid any risk of flooding), cut the power, and call INDESIT service.

Rapid flashing of one or two "G" indicators without clear identity: This signals a malfunction detected by the safety system. Note which indicators are flashing, turn off the appliance, and contact customer service providing the model (IDL 420) and the serial number engraved on the inner door. Never call unauthorized technicians.

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