Hi Guys
This is the first Vaillant i've fitted so thought I should make a post to try and get some help.
C/H isn't coming on - boiler status is 'S.30' (no heating demand from external controls - clamp 3-4 open).
I have linked out 3-4 but still the same.
Hot water works fine - full gas rate mode for commisioning also seems to work.
When loop testing for commisioning, fuse in spur blew. Replaced fuse in spur and fuse also pcb fuse - not sure if the 3-4 terminal issue could be related or not.
Any Vaillant experts out there who can give me some pointers? Need this system back on before monday!
many Thanks
Dave
This is the first Vaillant i've fitted so thought I should make a post to try and get some help.
C/H isn't coming on - boiler status is 'S.30' (no heating demand from external controls - clamp 3-4 open).
I have linked out 3-4 but still the same.
Hot water works fine - full gas rate mode for commisioning also seems to work.
When loop testing for commisioning, fuse in spur blew. Replaced fuse in spur and fuse also pcb fuse - not sure if the 3-4 terminal issue could be related or not.
Any Vaillant experts out there who can give me some pointers? Need this system back on before monday!
many Thanks
Dave