Morning all,
I’m having a problem with my boiler I’m hoping you can help with.
I have a Grant Vortex 21e Combi Boiler (Oil). There was a leak (now sorted) which caused the electrics on the HW pump to burn out. I’ve replaced the pump however there is still no hot water.
When the hot tap is run the flow light comes on and the burner fires but after about 5 minutes the overheat cut off activates.
The pipe leading into the Heat Exchanger gets warm, but the exchanger itself is not getting hot. I have removed the heat exchanger and cleaned it out (I live in a hard water area) and I can get a good flow through it so I don’t think it’s blocked. I’ve also cleaned/descaled the TMV.
I’m now at a loss as to what it could be, prior to replacing the pump (which seems to be working fine) everything was ok – does anyone have any ideas?
Thanks in advance
I’m having a problem with my boiler I’m hoping you can help with.
I have a Grant Vortex 21e Combi Boiler (Oil). There was a leak (now sorted) which caused the electrics on the HW pump to burn out. I’ve replaced the pump however there is still no hot water.
When the hot tap is run the flow light comes on and the burner fires but after about 5 minutes the overheat cut off activates.
The pipe leading into the Heat Exchanger gets warm, but the exchanger itself is not getting hot. I have removed the heat exchanger and cleaned it out (I live in a hard water area) and I can get a good flow through it so I don’t think it’s blocked. I’ve also cleaned/descaled the TMV.
I’m now at a loss as to what it could be, prior to replacing the pump (which seems to be working fine) everything was ok – does anyone have any ideas?
Thanks in advance