Omega Owners Forum

Chat Area => General Discussion Area => Topic started by: Tonka. on 22 March 2012, 11:30:39

Title: Baxi Solo 3 PFL 50
Post by: Tonka. on 22 March 2012, 11:30:39

Yes I know they are crap boilers but my system has decided to play me up.
Before I get a Sparky to wring me out, does anybody have an idea of what could be causing the fault.


The hot water and C/H work fine but the circulating pump is on constantly, day and night, 24/7. It will not go off.....

The pump is wired straight into the boiler PCB so that controls the timing of the pump.

I have disconnected the port valve and the pump continues to run.

If I turn the boiler off on its controller the pump continues to run.

If I turn the mains switch off and totally isolate the boiler the pump stops.


I am leaning towards a faulty PCB in the boiler.


If it is the PCB, do you knowledgable fellows know which failed parts control the pump.


The PCB
http://media.diynot.com/55000_54682_27757_94125511.jpg?AWSAccessKeyId=0FGFJJC9EFAG5882Z0G2&Expires=1332413198&Signature=YEgPxH0DnkADT2mj85BLSMJ%2BKZM%3D (http://media.diynot.com/55000_54682_27757_94125511.jpg?AWSAccessKeyId=0FGFJJC9EFAG5882Z0G2&Expires=1332413198&Signature=YEgPxH0DnkADT2mj85BLSMJ%2BKZM%3D)


The PCB Schematic
http://i92.photobucket.com/albums/l40/underwurlde666/Baxi%20Solo%203%20Boiler/BaxiSolo3pfl50MKII.gif (http://i92.photobucket.com/albums/l40/underwurlde666/Baxi%20Solo%203%20Boiler/BaxiSolo3pfl50MKI.gif)


I know its a long shot but you never know who has had one fail  :y :y

Title: Re: Baxi Solo 3 PFL 50
Post by: Kevin Wood on 22 March 2012, 11:57:16

RL3 on the schematic. Could be its contacts have welded together so check across them with an Ohmmeter. :y

Title: Re: Baxi Solo 3 PFL 50
Post by: Tonka. on 22 March 2012, 18:37:21

Thanks for replying Kevin. I presume the relays are the large black boxes at the top right. Which one is RL3?

Title: Re: Baxi Solo 3 PFL 50
Post by: Taxi_Driver on 22 March 2012, 18:44:09

Quote from: Tonka. on 22 March 2012, 18:37:21

Thanks for replying Kevin. I presume the relays are the large black boxes at the top right. Which one is RL3?

I was gonna have a look at the pcb layout (top link) but i get an error saying the link has expired.

Yes, it will be a 'box' type object......is it not marked on the pcb?

Title: Re: Baxi Solo 3 PFL 50
Post by: Tonka. on 22 March 2012, 21:51:27

Quote from: Taxi Driver on 22 March 2012, 18:44:09

Quote from: Tonka. on 22 March 2012, 18:37:21

Thanks for replying Kevin. I presume the relays are the large black boxes at the top right. Which one is RL3?

I was gonna have a look at the pcb layout (top link) but i get an error saying the link has expired.

Yes, it will be a 'box' type object......is it not marked on the pcb?

Here it is. Sorry about the incredible size folks !!!!!


(http://i168.photobucket.com/albums/u162/Tonkapaj/PCB/PCB.jpg)