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The original was posted on /r/homeassistant by /u/tjb36 on 2026-07-30 21:55:32+00:00.
Like many HA users, I have an energy monitoring plug on my washing machine, to detect when it's running, and to send reminders to unload the machine once it's finished.
But! since this plug also returns power consumption, I also set up an alert in case the washing machine power consumption was lower than expected. And it triggered this week....
I know the most common failure mode of washing machines is a broken heating element. When this burns out, the washing machine never consumes the full power (in my case 1.6 kW), but instead only consumes a few hundred watts in throughout the cycle - whatever the motor and pumps use, as you can see below:
The washing machine was running cold, and the clothes did not get clean...
So I stripped down the machine, checked the heating element with a multimeter, and lo and behold it was open circuit. Ordered a spare part, swapped out the heating element, and reran a 40 dC wash cycle... this time getting the nice power spike at 1.6 kW whilst the water was heating again:
As a final check, couldn't help but to break out the FLIR:
If you have one of these energy monitoring plugs like me, I would recommend setting up a simple threshold trigger on the power, to make sure you are getting some reasonable consumption. I'm not in the habit of feeling the front of the washing machine when it's running to check if it's warm, so not sure how long it would've been before I noticed something was wrong. I think it's a powerful use case for such a simple HA automation.