First thing to make clear is am not an electrician or plumber. I would really appreciate the advice being non-technical.
I have a central heating system with 2 Honeywell V4043H1C56 actuators.
The hot water one (nearest the immersion) is working fine but the other which controls the hot water going to the rads sticks & therefore needs to be replaced.
First thing to make clear is that it is old & therefore I am having to replace the actuator & install the converter plate as it is not the more recent all in one model. Therefore I do have to drain the system.
Problem & therefore advice I need concerns the wiring. The currently fitted old model has 5 wires, the new model has 6, the most noticeable difference being an extra white wire.
Wiring in the cupboard is as follows - Colour at the start of each line is the one from the current actuator
- Blue & a 2nd blue feeds into to wiring block with a Blue, Blue & Black on the other side of the wiring block.
- Grey & a 2nd grey feeds into a Blue & Brown on the other side
- Green with yellow stripe & a 2nd Green with yellow stripe feeds into 2 Green with yellow stripes on the other side
4.Red & a 2nd Red feeds into a Red on the other side
5.Black is joined together with one yellow wireThis leaves two questions for installation of the new actuator-----
Do I use the brown wire on the new actuator in the same way as the black in the previous & what do I do with the white wire in the new actuator ?
Many thanks for anyone who can give me help.
Neil