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Thanks, just wanted to make sure...if all goes well wife and daughters will be able to have a hot bath tonight! Thanks all for the help - have a great Christmas

Got home late last night but managed to quickly disconnect the pump and you are absolutely right, there is another arrow on the head which is pointing the wrong way! Although it looks identical it seems like I have ordered the wrong pump somehow... Is it possible to unscrew the pump head and...

Sorry, thought you meant was there power! Haven't checked the voltage

Will do, thanks for that. Will report back tomorrow

Am at work so will need to check the direction when I get home, but I looked at the old one and new one last night to confirm that they are completely identical - direction of arrows included! Will update on the direction tomorrow as am away with work tonight

The entire pump, I literally disconnected it, pulled it out and put the new one in exactly the same position The new pump is identical to the old one (make, model etc)

Thank you all for the replies however I'm 100% sure the pump is in the right way. Due to the design of the pump (the electrical connections are on one side) it won't physically fit the other way up, plus I simply took the old one out and replaced it with an identical one, installing it in the...

They're identical wilo pumps, I literally swapped one for the other but didn't rotate the head to line anything up - just wired it in. Wondering if I might have knocked some limescale loose while fitting it which has caused a blockage?

The head is pointing up, tbh I don't think you could get it to fit upside down just because of the shape of it. Have loosened the screw and got water out, I did check it was rotating before I put the water back on initially, seemed ok?

Pump is the same way around as the old one, happy it's going the right way. If it's a blockage what's the best way of clearing it? Thanks for the help!

Power to the pump is ok, the heating is fine thankfully!

Yes, all the lights are behaving as they should be. It just runs for five minutes without the heat exchanger getting even warm before the overheat cut off activates. Was wondering if it might be a thermistor?

Yes, when the tap runs the flow light comes on and the burner fires

Yes, all open and working. Have bled the manual one on the flow pipe.

Thanks for the reply - the pump is on full speed and the valves are open - could you explain what you mean by venting the store and pump please?

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...