Hi,
I have a Powermax 140 installed in a flat. I removed a radiator whilst decorating and drained the system down at the same time, via the removed radiator. I refitted the radiator and filled the header tank. When bleeding the radiators I The noticed they seemed to fill very slowly (very liitle noise of air venting). The header tank is normal and all radiators trickle (not spurt) water at the vent screw.
I turned the heating on, selecting HW+CH. The boiler fired up and heated the HW. Thermostat was turned up and the CH pump runs.
The radiators however do not get warm. I removed the CH pump screw and a small amount of water trickled out. The pump spindle was confirmed to be rotating and both pump valves open.
The CH flow and return connections and immediate pipework at the boiler are hot. Pipework downstream of the CH pump is cold.
Any ideas on why there seems to be no flow and the rads are cold?
Cheers
I have a Powermax 140 installed in a flat. I removed a radiator whilst decorating and drained the system down at the same time, via the removed radiator. I refitted the radiator and filled the header tank. When bleeding the radiators I The noticed they seemed to fill very slowly (very liitle noise of air venting). The header tank is normal and all radiators trickle (not spurt) water at the vent screw.
I turned the heating on, selecting HW+CH. The boiler fired up and heated the HW. Thermostat was turned up and the CH pump runs.
The radiators however do not get warm. I removed the CH pump screw and a small amount of water trickled out. The pump spindle was confirmed to be rotating and both pump valves open.
The CH flow and return connections and immediate pipework at the boiler are hot. Pipework downstream of the CH pump is cold.
Any ideas on why there seems to be no flow and the rads are cold?
Cheers