This is my first post, I hope someone can help! My boiler was installed 4 years ago and I have had various issues, mainly F4 ignition fault which was rectified with adaption of the condenser trap, a few leaks etc. I have been having this problem for a week when I had to turn off main water supply to fix unrelated leak in the bathroom. All week we have been getting the F4 fault when trying for hot water, it runs cold and goes through 3 cycles without firing when the radiators are off, sometimes it will fire up on the third cycle and then we have hot water. The problem usually happens when the system is cold and hasn't been used for a while, ie overnight or when it is time to wash up in the evening when we have been out at work all day. When the CH is on, there is no problem with the hot water. The diverter valve has clunked for a while so not sure if this is the problem. Heatline have indicated to engineer it could be one of four problems. I am a bit concerned, only had boiler 4 years and don't want to replace unecessary parts and the boiler still not work. Does anyone have any suggestions?
Heatline Vizo 24 Boiler-intermittent problem with hot water
- Thread starter johnstone758
- Start date
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Thankyou.The engineer is due back next week so will provide an update.Dare I say, at least it is working!
Things are not looking good.Not had a fault for over a week.Not had radiators on due to good weather.Have to run water for a good while before boiler fires up,usually on 2nd cycle.I know it is working but something not right.Engineer has suggested heat sensor.I have previously been advised divertor valve on its way out.Boiler only 4 years old!No guarantee these parts will fix problem.Can anyone help?Meter Governor checked,all is fine.Spent lots on last boiler then had to get new one,been here before!thanks in advance.
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