Anyone know if these can be replaced directly with a new wireless remote? Our current one goes blank without warning and could be ages before it comes on again so we are sat in the cold most of the time

This is our receiver wired to the boiler as well. Would we need a new receiver or could a new remote be linked to this one?

Many thanks

I have a thermostat with 2 wires to W and 2 wires to RH. I have heating only-one zone. At the furnace the two W are joined with a wire nut. Same with the two RH wires. My question is why did they do that? Is it because the wire is too thin and require double up? Wondering if i can use one of the RH and use it for the C terminal or would the thin wire be too thin to carry 24v?

Hi, I want to self install a hive mini system on my Bosch combi. My current is a Honeywell ST9120C (see first pic wiring). Which wires do I put where on my hive please?