How to fix Pro Series Programmable Thermostat Faulty Button Issue (also fixes Honeywell Home T3)

Richard explains how to fix the tick button issue that can sometimes occur with the Pro Series Wireless Programmable Thermostat.
This same fault could also happen with the Honeywell Home T3R and the same problem would be fixed by following the information in the video.
The Pro Series Programmable Thermostat can be used to replace a faulty CM927, CM921, CM727 or CM721 and can be bought from us here - theintergassho...