Honeywell Home T3R Question

[aknight720]

Hi All,

I have an Honeywell T3R Thermostat being used with a Worcester Bosch 4000 30kw boiler and it keeps turning on the boiler every 5 minutes even tho the temperature in the room is the same as the temperature set for that programme period, is this normal?

 

[CBW]

No it’s not normal. How recent is the boiler and thermostat? Has it done it since it was installed?

 

[aknight720]

Both installed just over a week ago.

 

[Mister Banks]

Hi All,

I have an Honeywell T3R Thermostat being used with a Worcester Bosch 4000 30kw boiler and it keeps turning on the boiler every 5 minutes even tho the temperature in the room is the same as the temperature set for that programme period, is this normal?

Not every 5 mins but normal if its every 10 mins whilst the thermostat is going thru its learning phase. The thermostat is TPI and is maintaining the room temperature by constantly calculating how much heat is needed from the radiators to maintain the room temperature. The default setting is to cycle the boiler 6 times an hour, i.e. every 10mins. This can be adjusted but the recommendation for a gas boiler is 6 cycles. By default the minimum boiler on time is 1min.

 

[CBW]

Has it done it since it was installed?

And this? Might be a link left in.

 

[aknight720]

Yes it's done it since it was installed.

The link between L and CH has been removed, but the link between L and DHW is in place.

 

[aknight720]

Not every 5 mins but normal if its every 10 mins whilst the thermostat is going thru its learning phase. The thermostat is TPI and is maintaining the room temperature by constantly calculating how much heat is needed from the radiators to maintain the room temperature. The default setting is to cycle the boiler 6 times an hour, i.e. every 10mins. This can be adjusted but the recommendation for a gas boiler is 6 cycles. By default the minimum boiler on time is 1min.

That could be it, how long does it need to finish learning? Yes the cycle is set at the default of 6 and the min. on is at the default of 1 min.

 

[Mister Banks]

I have the T3 (non wireless), it took about 2 weeks to settle down.

 

[aknight720]

I have the T3 (non wireless), it took about 2 weeks to settle down.

Interesting ...

I am doing some timing tests to see if you have hit the nail on the head.

 

[Mister Banks]

Interesting ...

I am doing some timing tests to see if you have hit the nail on the head.

Here is some info from Honeywell......

https://www.google.co.uk/url?sa=t&r...ionality.pdf&usg=AOvVaw2Q21JNgROPsw2cim9IHVC_

 

[aknight720]

Here is some info from Honeywell......

https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwj-pMqiopT3AhUEQUEAHXgLDsIQFnoECA4QAQ&url=https://youlearn.honeywellhome.com/uploads/documents/FAQ_-_TPI_functionality.pdf&usg=AOvVaw2Q21JNgROPsw2cim9IHVC_

Thank you for the link to the info and yes it's every 10 minutes not 5, I have just checked it for 2 cycles.