Electrolux dishwasher — Error Code i20
The dishwasher is failing to drain water within the allotted time.
What it means
The i20 error code on an Electrolux dishwasher indicates a draining failure. The main control board monitors the analog pressure sensor during the drain cycle. If the sensor detects that water remains in the sump after the drain pump has been energized for a specific duration (usually 90 to 120 seconds), the board interrupts the cycle and throws the i20 fault. This is a protective measure to prevent flooding. The fault implies either a physical blockage in the drain path, a mechanical failure of the drain pump impeller, or an electrical failure involving the pressure sensor or the pump's circuit on the main control board.
Likely Causes
- 1 Clogged Sump FiltersDebris blocking the fine or coarse filters in the bottom of the tub restricts water flow to the drain pump impeller.
- 2 Blockage in the Drain PathA kinked corrugated drain hose, a clogged air gap, or an un-punched garbage disposal knockout will prevent water from exiting the machine.
- 3 Faulty Drain PumpThe drain pump impeller may be jammed by foreign objects like broken glass or bone fragments, or the pump motor windings have failed electrically.
- 4 Defective Pressure SensorThe analog pressure switch can become fouled with grease or fail electrically, falsely reporting to the control board that water is still in the tub.
- 5 Main Control Board FailureIn rare cases, the main control board may have a burnt relay or failed component, preventing it from sending 120V to the drain pump.
How to clear / reset
To temporarily clear the i20 code, press and hold the Start/Cancel button for 3 seconds to cancel the current cycle. Then, disconnect power to the dishwasher at the circuit breaker for 5 minutes to reset the control board. However, if the tub still holds water, the pressure sensor will immediately flag the i20 code again upon restarting. You must physically bail out standing water from the sump and clear any blockages in the filter or drain hose before the code will permanently clear.
Common replacement parts
When to call a pro
Call a professional if you have cleared the filters and drain hose but the i20 code persists. Diagnosing a faulty analog pressure sensor or testing the drain pump windings requires a multimeter and live voltage testing. If the main control board is suspect, professional diagnosis is essential to avoid throwing expensive parts at the problem. Axis Appliance Repair offers a $90 diagnostic (waived upon authorized repair) and backs all work with a 1-year parts and labor warranty.
FAQs
How much does it cost to fix an i20 error?
If it is a simple clog, you can often fix it for free. If the drain pump or pressure sensor needs replacement, professional repair typically ranges from $150 to $250 including parts and labor.
Can I fix the i20 code myself?
Yes, if the issue is a clogged filter, a kinked drain hose, or a blocked garbage disposal connection. For pump or electrical failures, hiring a technician is highly recommended.
Will the i20 code clear itself?
No. The code will persist until the water is successfully drained from the sump and the pressure sensor registers an empty tub.
How long does it take to fix?
Clearing a basic clog takes 15-30 minutes. Replacing a drain pump or pressure switch takes a technician about 45-60 minutes once the dishwasher is pulled out from under the counter.
Is it safe to keep running the dishwasher?
The dishwasher will lock you out of starting a new cycle until the i20 error is resolved. This is a built-in safety feature to prevent overflowing and potential water damage to your floors.
Need help with i20?
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