Boiler serviced and now no heating :-(

J_B

Keeka wrote: »

you have are two buttons on the left which you turn round from '-' to '+' for hot water and heating

Presumably (?) you have turned the 'heating' dial to as much '+' as you can???

Keeka

Yes - both are turned as much clockwise as possible

J_B

Did you RTFM?
I typed "Vaillant Eco pro operators manual" into google

Something on Page 8 - 4.11.1 Switching off heating mode (summer mode)

Has someone done this perhaps????

System

J_B wrote: »

Did you RTFM?
I typed "Vaillant Eco pro operators manual" into google

Something on Page 8 - 4.11.1 Switching off heating mode (summer mode)

Has someone done this perhaps????

Perhaps not as the OP has stated:

Quote: This always happens in the mornings - the evenings the heating comes on ok. Unquote

C_Mababejive

Cant see why they were baffled. If it were nothing obvious, id link out the external controls in the wiring panel and see if the boiler behaves ..YES?> problem lies with external controls.. NO? > issue is with boiler.

macman

But that's a logical fault finding process: not a practice commonly practised by BG RGI's.

C_Mababejive

macman wrote: »

But that's a logical fault finding process: not a practice commonly practised by BG RGI's.

But i used to work for BG as an Engineer. I left because i was too good

Keeka

Just wanted to say a BIG thank you to everyone for helping me out. In the end i called in my tried and trusted boiler man. After much head scratching he suggested switching off the hot water in the morning and just put it on the night before and that solved the problem ! Weird eh ?

System

Keeka wrote: »

Just wanted to say a BIG thank you to everyone for helping me out. In the end i called in my tried and trusted boiler man. After much head scratching he suggested switching off the hot water in the morning and just put it on the night before and that solved the problem ! Weird eh ?

Not weird at all. Your system is clearly configured for Hot Water Priority as opposed to hot water and central heating. My system is configured in the same way. The bulk of the hot water re-heating is done in the hour before the heating comes on; however, if somebody then runs a bath; has a shower then the diverter valve will switch from CH to hot water until the cylinder reaches the set temperature.

If this wasn't happening before the boiler was serviced then someone has changed the hot water ON timing.