Ideal Logic plus coming on by itself

[Chrisnewton]

Hi all

We have had a ideal logic plus boiler for about 4 months now and it's been fine. However tonight while we were in bed we thought we heard it come on and sure enough when we felt the radiators they were ever so slightly warm.

I checked the boiler and it said pump overrun so it had been on. The thermostat was definitely off so no reason why it should have came on.

Any ideas why it did this?

Thanks

Chris

 

[Rickster123]

Have you got the hot water preheat switched on?

 

[Chrisnewton]

I'm not sure how can I tell?

 

[Chrisnewton]

Sorry just looked pre heat is set to off

 

[Ermintrude]

What's the low temp on thermostat set to?

 

[Chrisnewton]

Thermostat is set at about 21 degrees but its switched to off

 

[Ermintrude]

What's the low temp / frost protection set to?

 

[Chrisnewton]

Oh no idea how do I find out?

 

[Ermintrude]

What stat do you have

 

[Chrisnewton]

The official ideal one

 

[lame plumber]

some boilers have an auto run facility to stop the pumps seizing, comes on every 24 hours or so, dont know about logics tho,
yes they do having looked them up. otherwise you miight have a dripping tap somewhere, cause the same thing to happen

 

[Chrisnewton]

some boilers have an auto run facility to stop the pumps seizing, comes on every 24 hours or so, dont know about logics tho

Oh right that might be it then might have always come on in night and just not noticed it. Thanks

 

[Ermintrude]

The stat has a frost setting. Download instructions and check.

 

[Chrisnewton]

I don't think it does its just a basic timer where you push the clips in and out to set time of boiler to come on

 

[Ermintrude]

That's not a thermostat that's a timer. You should have a thermostat some where. Had a customer complain lots about boiler install once as it kept him awake and woke him up at night.......... Half brained chimp had frost setting set to 21!