A/C expansion valve failure

[acmikee]

well that was a waste of $400. follow tommys advise. I still want to know what your pressure are both running and not. iassume the unit doesn't have a LP switch.

 

[Zeke]

Well, I had the TXV changed out and all new R410A installed along with a new drier. Showing register temps of 45º now.

 

[LS6 Tommy]

What's your return temp? 45 discharge air temp is a little low for my tastes.

Tommy

 

[Zeke]

Whatever the ambient temp is. At this time of year the house is usually around 75º when I will turn the A/C on. So I'm seeing a 20º differential.

 

[Anthonyca]

Well, I had the TXV changed out and all new R410A installed along with a new drier. Showing register temps of 45º now.

What's your return temp? 45 discharge air temp is a little low for my tastes.

Tommy

Whatever the ambient temp is. At this time of year the house is usually around 75º when I will turn the A/C on. So I'm seeing a 20º differential.

Isn't that a 30 delta?

 

[Zeke]

Isn't that a 30 delta?

I don't know, you tell me.

 

[LS6 Tommy]

Whatever the ambient temp is. At this time of year the house is usually around 75º when I will turn the A/C on. So I'm seeing a 20º differential.

Isn't that a 30 delta?

Yes, it is a 30* Delta T.

Zeke, your coil is probably freezing. Delta T shouldn't be much more than 20*...

Tommy

 

[acmikee]

did the tech right down the pressures or super heat when he was done on your invoice.