Vaillant senso comfort connector

[Post and beam]

My Senso comfort wired thermostat has a broken connector. The 2 wire thing that plugs into the rear of the unit. Once i source a new one i need to understand how the wires secure into it. Can anyone throw any light on the subject please. See picture attached.

[HughF]

Screwdriver pushes down on the white bit at the top, wires come out. Tool-less connector.

[Post and beam]

Thanks dude. I did sort of try that but did not want to push too hard in case i killed it.

Will have another go later today.

I have what i hope is a new one of these on order just in case. Not certain its the same part as the online picture is very poor.

Still dont know which place its supposed to connect to on the back of the thermostat.

[JohnMo]

1 hour ago, HughF said:

Screwdriver pushes down on the white bit at the top, wires come out. Tool-less connector.

So a tool-less connection that needs a screw driver - so not really tool-less when you take it apart.

 

It's a bit like a Wago connector. Instead of a lever arm, your connection uses the white bits to release the friction clamp.

 

Your wires either need a solid crimp on end or if you cut the current ends off the wires, then do a tidy twist in the wire strands push in the white bits you should be able to insert the wire. It is unlikely the connector is  broken unless it was something you did into it.

[Dillsue]

If it's a cage clamp connector that you open with a screwdriver, look down the open end and you'll see the clamp opening when you push the screwdriver in. They are crimpless connectors so just cut off the existing end, strip off 10-12mm of insulation and carefully slide the bunched strands into the opening checking there's no strands sticking out. Don't twist or crimp the stranded ends as they are intended to be squashed by the clamp to maximise the contact area....majorly important with cage clamp power connectors to max out the contact area but not so important with low power connections.