After finding my Rachio (one of two units) was going offline on a regular basis (another thread), it started to appear that the problem was more than just a WifFi dropout.
Troubleshooting:
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Remove from outdoor enclosure
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new power supply
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Inside with only power connected, close to WiFi AP
.
When the unit fails (usually within 24hrs), it is blank: no LEDs. And no response to controller Buttons.
A power cycle produces the following sequence of Green and Orange LEDs (which I cannot find, so I presume is a service diagnostic)
After that the unit boots up to 2nd yellow bar (Lost Wifi) and requires Wifi settings entered again.
Have already organised a replacement, but would like to understand what is happening here: