Search results

yes room thermostat fully up and functional. its the wiring of the Y6630D1007. I have live to 1 and Neutral to 2. A to 4 and B to 5?? But another diagram shows a live connection from L to 4.... L to 4 connection does work but then thermostat starts the boiler to come on even though the...

yes that is correct.

With water yes the rads do get hot only until the cylinder thermostat reachs 60 deg where it is set, the the boiler goes off. Valve seems open on CH and HW. Heat only, nothing actually happens and valve remains in the same place. the boiler does not fire up at all.

Have the following installed. Vaillant 428 boiler Wireless Room Stat Y6630D1007 ST9400C Programmer L641 Cylinder stat V4073A 3 port motorized valve 10 Way junction box All honeywell Wired as follows

Hi thanks. my plumber is an XXXX. anyhow i put in a new in feed from up stairs to downstairs.now the system is full working. yes my installer did change all the TRV's and new radiators. charged me so much and i don't he had a clue. Not that i know anything, anything i have come to known is...

ok the original ideal mexico boiler blew up. This was in the summer. The Engineer/Gas fitter came around looked at the system and said that he would recommend a vaillant 428, to give enough energy around this house. So he came a week later with a big smile and tghe boiler. Dismantled the old...

ok got one question old system was primatic, the boiler installer did not even know anything about it. and neither did many others. anyway had a in and out feed down stairs had a return feed from up stairs to downstairs.. Created new in feed from up stairs bathroom radiator.. kept the...

How would i set max heat input

ok thanks for information in the past. now the boiler is fully functional but keeps going off and on. the temerature on the screen drops and it fires up again till it gets to about 80. pump is running all the time. When is goes off the central heating icon starts to flash. Any ideas.

Wired up the boiler, have this code SF.H flashing, and sometimes it comes on and sometimes it does not. Pump is also on. Nothing in manual. any ideas. Wiring is correct and checked again and again. Uusing the Honeywell y plan,

To answer all yes i live in a old peoples home. its 8 bedroom, accomadating my family and my mum and dad. And I'm a Railway Signal Engineer.

Now i get it. pump directly connected to the boiler. Boiler connected through the junction box from 1, 2, and 3 and switched live (orange) from terminal 8. i have ran one wire from the junction box to the boiler. so i will use that wire for pump, which is next to the junction box, except...

Please just confirm, i need to connect the live from the boiler to the pump. right? and don't bother with connecting the pump to the 10 way junction box unless i want the neutral and earth which i can take from the boiler too? (Basically connect pump to the pump connectors on Vaillant 428)...

I had a new boiler installed by a gas fitter, Vaillant 428. He also installed 3 Way valve and a new Cylinder and a new pump and a room thermostat. All honeywell y plan pack. I'm an electrician and I thought I would wire it up according to the Y plan Wiring Diagram. But the problem is...

Could you please help me, I have the same washing machine, Hoover Performa 1100, and it stops between 5 and 6 and when i click up a notch its fine. Could you tell me where this element is and where i can get it?