hot water radiators
I live in a ranch home with a 44 yr. old hot water heating system. The upstairs is baseboard heating copper pipe fins. The basement has 2 cast iron upright radiators. For 44 yrs., the basement has been warm as toast. This year the radiators in the basement are stone cold not producing any heat.
Bled air off without correcting the problem. When I trying to get air out the system, with the motor running, the inlet and outlet pipes are hot to the touch. However the radiator itself remains cold without producing heat.
Tried bleeding system with the pump not running, appears to be no air in the system.