Ideal isar he 35 says t

[Shell1963]

Hi my boiler keeps making a noise and saying the letter t.
I regularly check and top up water and check pressure between 1 and 2
I think i read somewere its normal for t. ??
I just wonder if its ok or costing me more to run .
Any helpful advise please.

 

[imiller9]

T in display is hot water pre heat and is a normal function. It should however only be on for a minute or three and then change to standby - 0 in display. If it stays on for a long time, it may be a fault such as a passing diverter.

 

[Dan Robinson]

Drippy tap.