Hi gents,
my CH pump has started making strange noises normally associated with a kettling boiler.
At first i thought it was the boiler, but i have had the pump on and the gas off for over an hour, so the water is circulating round the system cold. The kettling noises are still there.If i put my ear to the pump i can hear the bubbling inside. I have bled the pump and NO air came out, water came rushing out straight away. It does this on all 3 speeds.
the only way i can get the kettling to stop is if i open all lock shield valves fully open.
The system was fine until last night.
any ideas? as i thought pumps either work or they dont...
my CH pump has started making strange noises normally associated with a kettling boiler.
At first i thought it was the boiler, but i have had the pump on and the gas off for over an hour, so the water is circulating round the system cold. The kettling noises are still there.If i put my ear to the pump i can hear the bubbling inside. I have bled the pump and NO air came out, water came rushing out straight away. It does this on all 3 speeds.
the only way i can get the kettling to stop is if i open all lock shield valves fully open.
The system was fine until last night.
any ideas? as i thought pumps either work or they dont...