Hi, i was told a while ago that there was a problem with my boiler. i had it serviced and i still have no heating. one radiator works but the other 5 dont. i've bled them and read advice about it being a TRV. dont know how to tell if its a TRV but tried using a hammer - i have no skills at diy but also cant afford to pay anyone else and its freezing!
Please, please, please help me
Please, please, please help me

