Hi,
I've just replaced at Danfloss RANDALL 102 Analogue with a Honeywell Sundial RF2 Pack 2. I thought it would be simple enough to swap the two.
I've seen another message on this forum changing the same Randall for the same ST9420C. On this forum message the guy said you just need to do the following: -
RANDALL------------------------------Honeywell RF2
6------------------------------------------L
5------------------------------------------N
1------------------------------------------3
2------------------------------------------4
This seems correct to me too, the above for the Randall are labelled the same on itself (L, N and Heating, Water), the only thing exact was a "com" which was wired from live. The ST9420C has the same in their PDF here as suggested above: -
www.uk-plumbing.com/brochure/honeywell/Pack2Brochure.pdf
The hot water works fine, the heating however will only come on when I also turn the heating on. The heating on its own will not kick in the boiler.
Have I missed something?! Any help is much appreciated!!
I've just replaced at Danfloss RANDALL 102 Analogue with a Honeywell Sundial RF2 Pack 2. I thought it would be simple enough to swap the two.
I've seen another message on this forum changing the same Randall for the same ST9420C. On this forum message the guy said you just need to do the following: -
RANDALL------------------------------Honeywell RF2
6------------------------------------------L
5------------------------------------------N
1------------------------------------------3
2------------------------------------------4
This seems correct to me too, the above for the Randall are labelled the same on itself (L, N and Heating, Water), the only thing exact was a "com" which was wired from live. The ST9420C has the same in their PDF here as suggested above: -
www.uk-plumbing.com/brochure/honeywell/Pack2Brochure.pdf
The hot water works fine, the heating however will only come on when I also turn the heating on. The heating on its own will not kick in the boiler.
Have I missed something?! Any help is much appreciated!!