Had an old analogue dial thermostat. Now bought a new one(Horstmann) - programmable to allow lower night temp. When wired up as per diagram when I up the temperature to activate the heating, the 3A fuse in the control unit blows.
I thought a room thermostat just connected to live and nuetral and made a connection when the temperature was below the selected setting?!
The spec on the back is 250v~5(3)A. The old one is 6(2.5)A 220v-240v~ Do I just need to up my fuse to 5A?
Can I check the resistance anywhere to investigate what may be the problem?
not sure what model you have but a lot of new stats don't need a neutral wire, just a live and the "call for heat wire" double check the wiring diagram on the inside if the old stat against the instructions for the new one.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.