super high pressure on rooftop unit

[jay729]

i,m working on 5ton rooftop unit. high pres side will go up to 450 psi then make sound as if pressure relief valve opening to relief pressure. suction side pres ok at start then goes up to 80 psi. unit has ran fine until last hot spell. would this indicate a blockage or a blocked filter drier? any help appreciated

[servicetrane]

that refrigerants have the machine?

[bigwheelingman]

Sounds like your cutting out on a safety?

[ascj]

i,m working on 5ton rooftop unit. high pres side will go up to 450 psi then make sound as if pressure relief valve opening to relief pressure. suction side pres ok at start then goes up to 80 psi. unit has ran fine until last hot spell. would this indicate a blockage or a blocked filter drier? any help appreciated

Dumb question....is the condenser fan running?

[pdrake65]

This thread is also posted in the general discussion forum....where would you like your responses at?

[toptwo]

I dont think its a resriction with that back pressure, check your coil for dirt????

[jpsmith1cm]

Why do you automatically suspect a problem with a blockage?

I believe that your problem IS indeed caused by a blockage, but not one within the system itself.

[cperk]

Why do you automatically suspect a problem with a blockage?

I believe that your problem IS indeed caused by a blockage, but not one within the system itself.

Please explain further my friend.LOL.

[jtrouse]

i,m working on 5ton rooftop unit. high pres side will go up to 450 psi then make sound as if pressure relief valve opening to relief pressure. suction side pres ok at start then goes up to 80 psi. unit has ran fine until last hot spell. would this indicate a blockage or a blocked filter drier? any help appreciated

I could be wrong but it looks like too many basics of diagnostics have been left out. Need a lot more info.

[pdrake65]

I could be wrong but it looks like too many basics of diagnostics have been left out. Need a lot more info.

Ya think?!?....your not wrong!:D

[jtrouse]

Ya think?!?....your not wrong!:D

I was trying to be nice.:D
Ya think?!?:LOL:

[pdrake65]

The sad part is that someone could post that question and not respond to anyhting. We don't know if he didn't just blow up the unit!

[jtrouse]

Hey PD, Why are you just wasting away that great sunshine outside today by sitting in the AC in front of a computer screen? :D

[pdrake65]

Just got done mowing the lawn.....going back out in a few.:yes:

[artisancorp]

to hot to mow lawn here in jersey

[pdrake65]

Our next heatwave starts tomorrow.

[jtrouse]

Just got done mowing the lawn.....going back out in a few.:yes:

A real glutton for punishment.

[pdrake65]

Better today than during a heat wave after working all day in it!