Accidentally got a sensor wet while cleaning
Moisture from water, degreaser, or cleaning foam can trigger safety lockouts or cause the unit to run for hours on full speed. This prevents people from turning the system off with a remote or app and leaves them unsure if the sensor will still function properly.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Rinsing the component with 99% alcohol and letting it dry well before use
- 2Flipping the breaker off for several hours or overnight to attempt a hard reset
- 3Comparing blinking LED error codes to the service manual
- 4Replacing the damaged sensor
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I was swishing around the water mixed with simple green pro HD degreaser for like 20 minutes. Once I realized I forgot the sensor in there I removed it and poured 99% alcohol all over and in it a few times to clean it off. Not sure if it’s a big deal or not? Will it be okay?”source ↗
“While cleaning the indoor unit with AC cleaning foam, the unit was accidentally switched on before the cleaning process was finished.”source ↗
“I suspect that the cleaning foam or moisture may have triggered the R32 refrigerant leak detection sensor, potentially causing a fault or safety lockout.”source ↗
“The unit runs for 3/4 hours on fullspeed by itselfe, cannot turned off with remote or app.”source ↗
Where this came up
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