no heating valliant ecotec pro, hot water fine.

[stevelee.]

hello.problem started after i turned boiler off the other night cause had to connect washing machine up to hot water supply(usually sits in garage but froze in there) and did not want boiler going on and off all night. now when i select heating on, the boiler fires up, orange led lights up, gets to 70degrees, orange led goes out and boiler just makes its usual sounds but the c.h. pipe coming from boiler just goes warm and no heat to rads. i'm sure green led used to come on with c.h., it does when demanding hot water which works fine. thanks for any help.
cheers steve

valliant ecotec pro 24.

 

[stevelee.]

was a frozen pipe stopping water from pumping round. all sorted now.