Hi all,

I have an Honeywell thermostat (checked and looks like T8775C Round Thermostat) that yesterday start to show F or 8, changing from F to 8 in a second and back.

I reseted the heating central but after a while it goes back to 8/F.

Does anyone know what should I do except calling for a specialist?

Regards,
Adrian

Here is your install and owners manual. Make sure all your settings as shone on the paper are correct.

Customer care number also included.

http://customer.honeywell.com/techlit/pdf/69-0000s/69-1679EF.pdf


Install manual



http://customer.honeywell.com/techlit/pdf/69-0000s/69-1677EF.pdf

Here is your install and owners manual. Make sure all your settings as shone on the paper are correct.

Customer care number also included.

http://customer.honeywell.com/techlit/pdf/69-0000s/69-1679EF.pdf


Install manual



http://customer.honeywell.com/techlit/pdf/69-0000s/69-1677EF.pdf


10x, I will check it out tonight