Tom,

To clear the "call for service" message, press the "No" button for 10 
seconds.

I had found this on the FAQ page of the web site when it happened to me 
a few years ago.

73, Steve  KW3A

On 10/25/2013 8:40 PM, Tom Brennan wrote:
> I've one of those talking thermostats from Talking Thermostats.com and it does
> do what they say it will do.  However, be aware that it is not completely
> accessible and after a year or so it starts giving you a message about checking
> your system that just doesn't go away.  You have to get a sighted person to make
> a change on the thermostat in part of the menu system that has no speech.  In
> fact, if it doesn't talk the menu choices are not even covered in the accessible
> instructions.  You actually have to look at the print instructions.  At least
> the instructions that I have are on a large fold-out page so don't do well on
> the scanner.
>
> Tom
>
>
> Tom Brennan  KD5VIJ, CCC-A/SLP
> web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html
>
>
>