It's about time we ditched these crappy devices and buried them in the same landfill as all the pre Android/iOS phones.
A recent gas outage caused it to mysteriously display a scrolling message that would quickly disappear. It refused to start the heater. A call to the supplier came up with:
Sigh. You need to press J12 while holding down the PROG button while rubbing your stomach anti-clockwise to force a reset.
Sounded like she'd told this story many times.
The consumer electronics industry really needs to get their shit together.
The article below gives you a glimpse of the way it should be done, but I don't see Janine letting me stick a phone on the wall with a USB cable sticking out of it.