What Does Monogram Dishwasher Error Code i20 Mean?
Error code i20 on a Monogram dishwasher signals a drain issue — water is not draining from the tub at the expected rate. This code is similar to C4 but indicates a timeout during drainage rather than a pump signal failure.
Common Causes
- Blocked filter assembly – The cylindrical and flat mesh filters are clogged with food debris.
- Kinked drain hose – The drain hose is bent behind the unit restricting outflow.
- Garbage disposal knockout plug – On new installations, the disposal knockout plug was not removed before connecting the drain hose.
- Failing drain pump – The pump motor is worn and cannot drain water fast enough.
How to Troubleshoot
- Clean the filter – Twist out and rinse the filter assembly under the tap.
- Inspect drain hose routing – Straighten any kinks and ensure a proper high loop is in place.
- Check garbage disposal connection – If the dishwasher drain connects to the disposal inlet, run the disposal to clear it.
- Manual drain – Press Cancel/Drain to run a drain-only cycle and observe if water exits.
When to Call a Professional
Drain pump replacement is required if the pump has failed. Call 844-752-7887 to book a Monogram technician.