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can anyone recommend a good solid reliable portable stat solution to team up with a new vaillant combi. House left empty for periods so want to ensure that it doesn't lose connection and continue heating indefinitely. Thanks

System: Vaillant ecoTec plus 837 combi boiler with Honeywell CM900 Programmable Room Thermostat I'm trying to test how much gas my Vaillant boiler is using via the chimney sweep mode (theory vs actual). My aim is to put the boiler into chimney sweep mode for 5 mins and then check the meter...

System: Vaillant ecoTec plus 837 combi boiler with Honeywell CM900 Programmable Room Thermostat Problem: I have recently had a Vaillant boiler and Honeywell CM900 installed in our flat. When I turn the heating on via the Thermostat, the boiler fires up as expected. However, the burner is at...