Recent content by AlfaIan

I think I've sorted it. Turns out a track on the other side of the PCB had also wore off meaning no voltage to the second relay. So repaired that track as well as the first one and appears to be working now. Just need to see if it carries on working with the switching between HW/CH and both.

Traced through the voltage. Goes through the first micro switch okay, goes through a resistor then to a diode and this is where the 240v stops so looks like a faulty diode. Could explain why it tripped the house electrics if the diode was breaking down maybe. Problem is I cant tell what...

Hi Mandate Got my voltmeter to read voltages (I had it on auto which doesn't automatically detect AC :? ) I'm getting White = 240v Grey = 240v Orange 55-60v Measuring the voltage on the back of the second micro switch I get 60v middle pin (directly linked to orange). Both other...

Might of figured out the reason. Took the micro switches out and looks like the track from the bottom relay to the orange wire has rubbed off over the years. Now to figure a fix.

Hi Mandate. Thanks for the information. I see if I can borrow another voltmeter from work so I can check voltages on the wires you mention and get back.

Done some more testing. Had the CH ON for an hour (programmer running HW & CH for 1 hour) Also discovered two levers a metal one and a plastic one (I was only using metal before) but the plastic has a bit more travel to work the relay so I kept working that open/shut which felt easy enough no...

Sorry to drag up an old post. I'm having similar issue to this. CH not switching on, but HW is. Mixing valve is energising, with HW program ON holding mixing valve to CH position radiators get hot. Bled radiators but no air trapped. Also checked voltage at junction box but getting no...

I suppoese another option is to sign up for a service/maintanence thing and then claim on that after a few months. Thing with that is surely they would know about the problems with this boiler through the volume of incidents and may charge a premium.

A company taking faulty PCB like one for Suprima removing bad solder joints cleaning resoldering testing then selling with 6 or 12month guarantee

From what i've read it's the solder joints on the PCB which fail hence the intermitten problem. So surely a reconditioned one for £40 would fix it albeit not a perminent fix.

Hi i've got the above boiler and every now and again (but getting more frequent) it fails to ignite and requires a reset. Now i've searched your forum and found a few simular articles, some of which said you can check some items with a multimeter to try pin point the problem. However i...