isar he24 heating on permantly?

"d" or "t" on boiler display continuously when heating on?

or "c" on when heating on?

Asbestos
April 2017

Hi Danny, you should have a timer control where you can set various times for your heating, i have serviced many of these boilers, check that the clock is set to right time and also check your heating time settings, you can also turn your heating to off mode from this. hope this helps.

Hardip
April 2017

Check the manual for starters:

http://www.freeboilermanuals.com/assets/pdf/ideal/203319_inst.pdf

Especially pages 30 and 31.

acp
April 2017