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- 10 Dec 2019
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Hi, I have a GW Flexi 30 cx, which is displays an F9 fault.
Water pressure is fine and holds well.
CH is the issue, if the boiler hasn't been used e.g all night, it will not kick in at the time set and displays F9, a quick reset and it fires.
I have found a way around it by setting the heating between 11pm to 11.05pm and the same at 3am for 5 minutes and then the heating comes on as normal at 6.15 until 7.30.
Obviously this is not ideal and I want to resolve it. Am I right to hazard a guess that this is the Pressure sensor?
Any help appreciated before I shell out a load of dough for something that could be a simple fix.
Water pressure is fine and holds well.
CH is the issue, if the boiler hasn't been used e.g all night, it will not kick in at the time set and displays F9, a quick reset and it fires.
I have found a way around it by setting the heating between 11pm to 11.05pm and the same at 3am for 5 minutes and then the heating comes on as normal at 6.15 until 7.30.
Obviously this is not ideal and I want to resolve it. Am I right to hazard a guess that this is the Pressure sensor?
Any help appreciated before I shell out a load of dough for something that could be a simple fix.
