Glow worm 30cxi dead

[Wilbur:]

Hi guys

I am at a 30cxi 47-047-24

It has no display or control light and is completely dead.

But I have correct power to on/off switch, then on to the PCB at H8, the on board 630 mAT fuse is good with power to most parts of the board when i put my wand on it, the switch live is powered to the controls interface with power at H7, and it seems there is no power going to the user interface which has the display which is dead,

I am thinking of getting the main PCB, but worried its a problem with something else like the controls interface or the user interface, I don't want to look a right plank in front of the custard by ordering the wrong part, so any help would be great as the MI's fault section is no help.

cheers

 

[Andygasman2010]

Pain in the ass this fault! Firstly I'd start by disconnecting each component on the low voltage harness one by one and see if it comes to life. Flow switch, pressure sensor etc...

Have you tried doing a search on this forum? I'm sure you'll find a few threads about it.

Also, there's a private forum on here for RGIs called The Combustion Chamber. Email admin with your GS details and they'll let you in. There's some top blokes giving good advice.

Andy

 

[vicvapour]

Board is dead, replace PCB.

 

[Boilerman2]

Power to PCB no lights no Display = No PCB Replace it!!
(horrible boiler by the way!)

 

[Wilbur:]

Cheer guys, will order main pcb, will post result on Monday.

 

[mickyg]

its not always pcb, first post should be followed first, could be fan, lwps, display, display to pcb harness or pcb. bit of investigation required to prevent egg on face.

 

[vicvapour]

Cheer guys, will order main pcb, will post result on Monday.

Ok m8, more and more PCB's are going on these newer boilers, i am now starting to think manufacturers are making more now on parts than they do on the actual boiler!!!

 

[Agincourt1415]

1- check boiler is correct wired . p/live, s/live and neutral
2- check all pcb molex plug connections, that are located and fitted correct (work loose)
3- check display molex j13 is fitted right way around
4- disconnect j4 plug if this brings back display , replace fan.
5- cxi/sxi/si/ci range. disconect water pressure sensor if the display then shows f9 then goes blank when reconnected replace sensor

hope this helps

 

[bell824]

Power to PCB no lights no Display = No PCB Replace it!!
(horrible boiler by the way!)

AAAARRRRRRGGGGGHHHHHH!!!!!!
take nothing from this post and follow the others first!!

there are several other reason's display does not appear

oh and by the way not a horrible boiler easy (ish) fault finding and pretty damn reliable!!

 

[vicvapour]

If there's no display the PCB is more than likely dead.

 

[Andygasman2010]

If there's no display the PCB is more than likely dead.

It's fairly common for something on the low voltage side of the harness to give this fault, it could be the main PCB but it's just a likely to be the fan, pressure sensor, etc...

 

[mickyg]

If there's no display the PCB is more than likely dead.

not true

 

[Andygasman2010]

If there's no display the PCB is more than likely dead.

How many times have you replaced a PCB on this boiler for this fault?

 

[vicvapour]

its not always pcb, first post should be followed first, could be fan, lwps, display, display to pcb harness or pcb. bit of investigation required to prevent egg on face.

not true

 

[mickyg]

its not always pcb, first post should be followed first, could be fan, lwps, display, display to pcb harness or pcb. bit of investigation required to prevent egg on face.

not true

and your experience is based on what? Mine is based on working on these boilers every day for Glowworm. How often have you seen this fault? ever?