Hi All,

An easy question for you knowledgeable people!!

We have a elderly but functional combi boiler (in the kitchen) with a
mechanical thermostat in the hallway.

The problem I have is that the range from where the thermostat
switches on the heating to where it switches off the boiler is
enormous. For example, we either freeze or we get roasted! Keeping a
steady temperature in the house is near impossible.

I appreciate that the range of the thermostat shouldn’t be too narrow.

At the moment the thermostat is used as more of an on off switch.

First Question: Is it possible that the mechanical thermostat is
faulty?

Second question: Would replacing this thermostat with a wireless
digital thermostat improve the situation? There is of course the added
advantage of being able to move the thermostat around the house at our
convenience.

Third question: Can it be done? Is it easily DIY able. I’m fairly
adept at these sorts of things but this is not an area I’ve looked at
before.

Boiler: Ferroli Modena 102
Thermostat: SunVic TLX

Thanks.