Your boiler or hot water heater likely ran out of hot.
Is there someone you can ask for help? You don’t want those pipes to bust.
Yea the oil burner guy came out and said the hot water circulatory pipe for the radiators is frozen in a wall somewhere.
This happened a few years ago as well.
Gonna have to wait till the temp outside rises i guess.
Hope it doesn’t burst but it is not under the same pressure as a tap if that makes a difference..