Discuss Vaillant Turbomax ignition issue - but only in the evening in the Central Heating Forum area at PlumbersForums.net

Messages
5
My ancient Vaillant Turbomax has been operating perfectly for the last few years but this week on Monday night I had no hot water or heating. I switched the boiler off and back on and all was fine again. The system is on a Honeywell system which switches the heating on in the morning for half and hour and evening. Every morning this week the heating has come on okay but when I return home from work the heating has not come on and there is no hot water. Switching it off and back on works every time. Prior to switching it off the info button gives S3 (ignition). Any ideas what could be causing this? It seems strange that it's only giving me an issue in the evenings... the boiler is going on and off all evening as the rooms hit temperature so the ignition is working fine after I 'reboot'. Thanks in advance.
 
If it’s happening in the evening, it could be relevant or not. It all depends if there’s contributing factors. I would say you need a gas engineer.
I will get one in but I am trying to troubleshoot ahead of that to help him seeing as I won't be able to demo the issue when he comes as it works fine when switched on and off again.. unless I leave it 'broken' until he turns up. It could be a coincidence that it only happens on the late afternoon switch on. I can't see it being to do with the Honeywell thermostat system. If it happened in the mornings too I could understand it more
 
So yes, in that case then it could be anything from a pressure differential to the diverter not making. You could opt for a Vaillant fixed price repair, or go with an engineer familiar with Vaillants.
 
So yes, in that case then it could be anything from a pressure differential to the diverter not making. You could opt for a Vaillant fixed price repair, or go with an engineer familiar with Vaillants.
Thanks. The issue is now random. It did come on last night but went off this morning. It sounded like even though the ignition had not fired the fan was running. It's had the pressure switch and diverter changed in the past so maybe one of those again.
 
Thanks. The issue is now random. It did come on last night but went off this morning. It sounded like even though the ignition had not fired the fan was running. It's had the pressure switch and diverter changed in the past so maybe one of those again.
Yes, could literally be anything on the sequence of operation. Fan running could be if the gas valve is opening then they get rid of a gas buildup.
 

Reply to Vaillant Turbomax ignition issue - but only in the evening in the Central Heating Forum area at PlumbersForums.net

Similar plumbing topics

  • Question
Ideal Logic 24, Previous problem was that the hot water was only cold or barely warm if the heating was in use. If heating was off and boiler cold...
Replies
2
Views
221
Every two weeks or so I have to go and top up the system because the hot taps are running cold. Boiler display is flashing 0.6 bar and I fill up...
Replies
2
Views
283
PSxxxxxx
P
We run a community village hall and have a large kitchen provided for the use of hirers. This includes a Lincat SLR9 gas cooker which I believe is...
Replies
5
Views
555
Hi, Can anyone advise as to why the cold water to my bathroom keeps airlocking? This originally happened about 12 months ago and has happened 3-4...
Replies
9
Views
444
Hi bit of a weird issue, I installed a grohe bathroom tap successfully 2 months ago bought from screwfix. Last week the right hand hot tap makes...
Replies
7
Views
492

Newest Plumbing Threads

Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock