Hot water recirculating pump fail?

So I have a Grundflos UP 10-16 PM recirculating hot water pump and system that has worked well for 7 years. But no more. Hot water in the shower stopped. I switched the Grundflos off ‘Adapt’ to 100% and thought it was working but only for a few minutes then cold water I switched it to temperature control and same thing. So I am not sure how to trouble shoot this. A new pump is $408 and a week away. Any ideas?

Can someone tell me what this is called?

Installed a new sink which has a greater depth than the previous one. The current plumbing won’t fit into the sink drains and the garbage disposal is going to be too close to this thing. Can someone please enlighten me as to what this is called and how do I remove it? Thanks all!

What is this white solid that clogged my kitchen drain?

Hey uh, question here, what’s going on with this shut off? It’s not a compression fitting, nor is it Pex. Never seen anything like this before. Any ideas?

Weird pipe in bathroom. I live in a townhouse.

Farm hydrant with timer?

Can anyone tell me if this is an awful idea? My farm has 7 hydrants and these timers would make my life a whole lot easier.

New build - this is the hot and cold water pipes throughout the house. Does this look good enough?

I was under impression. Pipes are sturdy ones. This looks too flexible. I may be wrong coz this is the first time i am building a home. Also we have extreme cold weather, wont they burst?

I believe I’ve found a pinhole leak in a copper 90 elbow joint. Looking for confirmation and comments, thanks! And can it wait till after the weekend to call a pro?

Hey guys,There’s a hole at this joint how can this be fixed?

Advice on tap tightening please

What should I be doing here? These look different than the others I have done. TY

Help with wiring new water heater.

I installed a new water heater but I’m not getting hot water. I installed the ElectriFLEX LD™ (LIGHT-DUTY) Upright Electric (Manual)[https://s3.amazonaws.com/bradfordwhitecorp/wp-content/uploads/commercial_electric_upright_electriflex_ld_naeca_compliant_iomanual_54649.pdf)] I am getting 240v to the wiring block on both sides of the second and third screw but when I test the first two screws on the top thermostat I am not getting 240v. I wired as I think the instructions says to in 3B. I also tried 3A which had the black wire in the first slot. Same results. I’m guessing I must be reading the wiring diagram wrong. Anyone have an idea? Going on day 3 of no hot water!