Looking for a replacement Central Heating Timer (Ed.)

[Deleted member 267285]

It seems you may have a gravity installation, which the LP522 does support, maybe change it to gravity?

 

[Kurtis Blow]

If you look at the Q&A section of the product on Screwfix you’ll see my question and the answer to it

 

[Kurtis Blow]

I made sure the switch on the LP522 was set to gravity before installing it on the back plate

 

[Kurtis Blow]

It’s only the HW that’s gravity, the CH is pumped. The boiler fires up for the HW but not the CH

 

[Deleted member 267285]

It’s only the HW that’s gravity, the CH is pumped. The boiler fires up for the HW but not the CH

OK, daft question - is the thermostat calling for heat?

 

[Kurtis Blow]

Ok, apology time the switch on the LP522 was on pump not gravity. I thought I’d slid the thing over to G but when I looked more closely, it’s not a slider it’s a tab that you have to move from sitting on one set of steel pins to sit on another set of steel pins…so in effect it doesn’t slide at all. Anyway, up and running now but thanks for your time and patience

 

[Deleted member 267285]

No worries, glad you’re sorted.