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5m head on the PP side is quieter but the head isn't too low or high. Are the modes on the right more for underfloor heating?

Please see edited post above

What do you mean flush from both sides? My. Magnaclean was full though! Could be the cause. I've also rotated the screen, but don't know if i overtightened the screws But the house symbols to the left are for number of rads etc according to the manual? Once it completes the air releasing...

They are working but the noise is becoming louder and unbearable. How do you bleed the wilos? The wilos instructions aren't great as many have said this. Just photos but no words

They have a year warranty though, that says it all tbh. Come on, old grundfos lasted 20-30 years. Then they made the usp 2 which was second generation and that wasn't great either The low wattage of the wilo is about energy efficiency no? I changed it in Dec because i thought new rads weren't...

But the ups3 pumps for me have played up regardless of flush or not. Other engineers have reported this too Other reviews have gone for wilo after bad experiences with ups3

The instructions are useless with Wilo, just photos. There are videos from wilo but they're not great. When I put the ups 3 to constant speed 3 yesterday the bathroom towel radiator got hot. That's something else I mentioned on this forum that it has Been cold

A wilo is available in 6m too but with 1 year warranty. Ups3 are rubbish, seen some reviews by some engineers saying they have been problematic. I've changed a few over the years, and this was before the power flush.

What system problem could exist? A proper power flush was done. I might check the magnaclean, i ran the usp3 fot 35 mins yesterday on highest setting and no air came out after bleeding. Why would you say its not powerful?

Since beginning of Dec 2023. Less than a year maybe for the prior one. If I was to undo the 4 screws of the pump and rotate it, that would just rotate the control / electrical outlet rather than the pump shaft? I may get the below. It has 5 year warranty. The 6m head one has 1 year...

There is now a buzzing noise that can be heard as well as the vibration noise. I've had this previously and upon changing the pump it goes away. The pump is fitted correctly. I got confused with the "always fit the pump with a horizontal motor shaft"

But can they be used as a central heating pump? I'm just concerned about the noise and not energy efficency.

I didn't get a pic, but there's a vent slightly higher which when opened only water came out. The cistern had 3/4 of tank of water in it and ballcock was functioning. Why are the older type pumps more expensive now? And sold as "secondary" pumps...

The pump itself is quiet but it appears it might be vibration / humming noise through pipework

Which is the wilo equivalent? And is the physical size same? There are the older looking type grundfos but they're about £300-600

I had that years ago, it was on the highest setting yes. The ups3 have always been problematic. Which thing hasn't been when there's a microchip or circuit board in it?

The old red ones? Not had that in years. Systems had a power flush and water is crystal clear

I had it on CC2 for over a month it was fine. CC3 was too loud and CC1 wasn't doing the job ie rads were lukewarm at the most and HW wasn't getting hot. But since last night it has got very noisy at CC2. The arrow is correctly pointing towards the valve. There is a vent in the loft which I...

It has decided to become very noisy at constant speed 2. The boiler was set to 70c yesterday as ut was cold. The hot water is surprisingly still at hot ar this hour despite it went off at 7pm. Constant speed 1 is too low to push heat around, and if hot water is on too then barely the HW and...

Ah typical hero, just knows how to hang a boiler up and do the tightness test but absolutely clueless on diagnostics. Pass the parcel between gas man and sparky, and rightly so sparky won't want to touch it. Few options - call manufacturer as boiler under warranty and they come sort it Call...