Connecting room thermostat
I'm replacing my room therrmostat with a programmable one, but the
wiring doesn't seem to correspond. Below is an (Arthur) ASCII sketch
of the existing wiring, with the colours alongside.
_____ _____
-|_____|-|_____|--¬
| |_ 3 N (Blue)
|_______________
\|____ 2 H (Yellow)
|