Ionisation problem on Heatline Solaris boiler, code F4?
We have a 2 year old Heatline bolier which has come up with the fault F4, an ionisation problem causing the bolier to completely shut down. My plumber cannot fix this and Heatline's technical support is shut at weekends. Does anyone know whether this would just be a replacement part needed?
Nillu is 100% right. Follow his instruction and your boiler will work again. I have just fixed mine. The fault code is wrong for me. Nothing about ionisation. I think is ignition problem.
All you need a screwdriver and a little sandpaper to clean the electrodes. Should be 10-15 mm gap between them.
Toby
April 2015
I got the same boiler and same fault! What you need to do is change the boiler nothing but problems!
Gareth
January 2013
Try cleaning the probe this usually esolves the issue
fred
December 2010
we have only had our bolier going for 3 weeks and now it has stoped working and it is bran new we got it last year but only got round to doing it and it showing code f4
nicola
October 2010
i had same problem. if u r ok with some d.i.y then try removing the probe and slightly widen the gap between the 2 prongs. this will give a bigger spark and should fix the fault
nillu
January 2009
not sure of the terminology "ionisation", is the boiler failing to stay alight, i.e lighting for 10 secs or less then locking out? If so could be a loose connex inside to the electrodes near the burner, or mis placed loose electrode. You are in "corgi" territory I think!
hobhead
August 2008
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