Well folks having read some extremely helpful advice on this site I wonder if I anyone could kindly help me so I can sound knowledgeable when the plumber turns up . Other posts don't seem to hit my problem.
I have a combi boiler- Vaillant turbomax plus 828E (VUW GB 282/2-5) about 7 years old I would say- which is intermittently faulty.
The boiler works fine to provide hot water and has never failed to ignite when hot water is called for.
When I now fire up for central heating, after no heating use during this summer it often locks out with a F28 fault code. It was fine last winter and I have changed nothing.
On initial heating start-up there’s some clicking from the diverter valve the pump starts up, and the sound of some gas firing. The orange light comes on for a second or so and then goes out . After a few tries at getting going the red light and F28 fault code appears. But, most of the time it will work fine and provide heating correctly although it often seems to fire only on the 2nd or 3rd attempt when I watch it. Then during the heating cycle it can lock out with the same fault.
I had a similar problem during the summer when the boiler tried to keep its internal hot water reservoir warm. In that case the boiler would very occasionally lock out when heating was required for that purpose but I can’t remember the fault code. I switched off the keep-warm function and the fault went away (until now!).
There was a old diverter valve on the floor underneath the boiler when I moved in to the house late last year. The heating system pressure is about 2 bar presently and the gas supply is good I believe.
Any help or suggestions would be very welcome.
Regards
Pheasant Plucker
I have a combi boiler- Vaillant turbomax plus 828E (VUW GB 282/2-5) about 7 years old I would say- which is intermittently faulty.
The boiler works fine to provide hot water and has never failed to ignite when hot water is called for.
When I now fire up for central heating, after no heating use during this summer it often locks out with a F28 fault code. It was fine last winter and I have changed nothing.
On initial heating start-up there’s some clicking from the diverter valve the pump starts up, and the sound of some gas firing. The orange light comes on for a second or so and then goes out . After a few tries at getting going the red light and F28 fault code appears. But, most of the time it will work fine and provide heating correctly although it often seems to fire only on the 2nd or 3rd attempt when I watch it. Then during the heating cycle it can lock out with the same fault.
I had a similar problem during the summer when the boiler tried to keep its internal hot water reservoir warm. In that case the boiler would very occasionally lock out when heating was required for that purpose but I can’t remember the fault code. I switched off the keep-warm function and the fault went away (until now!).
There was a old diverter valve on the floor underneath the boiler when I moved in to the house late last year. The heating system pressure is about 2 bar presently and the gas supply is good I believe.
Any help or suggestions would be very welcome.
Regards
Pheasant Plucker
