How to fix a F5 error code ona Glow Worm 30CXi Boiler?

f1 is ignition failure f4 flame sensor failure . Not high pressure

There are two things that may be a problem. I do not have any experience with this boiler, but have years of experience repair radio systems. It is possible that your antenna at the boiler is behind metal, or even not attached.
Check https://www.glow-worm.co.uk/homeowner/products/climapro-control-1476.html for additional help. Both the install and user manuals are here.

Can you give a model number and more info? I think you mean a micron 60ff in which case it is here: http://www.glow-worm.co.uk/stepone/data/downloads_sd/8d/00/00/micron-60ff.pdf

Follow this link

http://www.glow-worm.co.uk/stepone/data/downloads_sd/51/00/00/cxi-range.pdf

Cheers

Electronic board and touch module communication error 1. Disconnect power for 1 minute.
2. Reconnect power.
3. If failure remains, replace board connection cable between touch control module and electronic control.
4. If failure remains, replace the electronic control.
5. If failure remains, replace the touch control module

Read more: http://www.appliancepartspros.com/repairtips/repairtips_appliance+fault+codes.aspx#ixzz0tXhzQz2F
http://www.appliancepartspros.com hope this helps

I have opened the thermostat to see if there is a battery and now doesn't turn on when the temperature is lower but it says to my baxi to stop after 5-10 minutes. What can I do to solve this problem ?

You have to have 12" clearance on all sides.

Your should be able to find the information here. Don't forget to check under discontinued products. www.glow-worm.co.uk

check the pilot line for an obstruction. check the millivolt generator that's supposed to keep the pilot valve open. check for a high limit control being bad.