Glow warm Ultimate fault code 9

Hi All,

I have a Glow warm UIHmate problem and it shows fault code 9. Any idea how to fix it? Do I really need to call a service guy? I don’t have an extra money now to fix it by someone else than me.


Hi Harry

F9 error codes mean issues with pressure, either circulation, boiler pressure or in worse case diverter valve problems. I am not sure which one is in your case, diverter valve should be changed by an experienced person, but boiler and circulation pressures could be adjusted on your own. Top the pressure yourself, you may also flush the boiler and if that doesn’t help call a specialist