I believe it only does that after a power loss, not every time thermostat calls for cooling. It's a safety built in to the Emerson controller. I definitely scratched my head the first time I saw it a few years back. Appreciate your videos brother! Keep up the good work.
I know nothing about a/c, but owned a rheem scroll condensing unit for 20 years. Worked like a dog all those years, with no problems. It finally blew up a couple days ago.
Jeez your the man Dave just installed a freezer and encountered same thing and thought the low pressure transducer was wacky but noticed it did it everytime I cycled the disco. Thanks for sharing.
Good to know, that's for sure. Trying to get management to change out a 25 year old Bohn water cooled system (R502), and was looking into the scroll, but they were 3 HP and up, and this is a 2 HP set up, so no dry heave for me! Thanks for posting, Dave.
I have seen this feature on other units. The purpose is to reduce the crankcase pressure prior to starting. It is a safety feature to prevent damage from pumping liquid.
+OcRefrigeration,Hvac & Electrical. It's also for the situation where there's a power outage and the crankcase heater hasn't been on. The unit could start up with liquid refrigerant in the compressor oil.
That unit didn't appear to have a crankcase heater. Manufactures think scrolls are so tough. No need for cch. Just as long as they never run in a vacuum they are bulletproof.
Damn Dave I've installed 3 of those Copeland scroll's, so far and they all did the same thing they started fine after the 3rd time, and I've wanted to ask you if you were dealing with the same issue, but I guess I wasn't the only one!
I bumped into one of these today and Ill give you guys a heads-up... carry a black tarp to put over your head or you'll never see the display. Unless your inside or at night.....
Amigo I have a question hope you can reply im working with a similar condensing unit . New condensing for a walk inn cooler. Im using 407c what would be the right set up cut inn and cut out on the Emerson control. Right now they’re set at cut inn 65 and cut out 25 but I feel like compressor keeps shirty cycling
That's crazy shank what dose the factory say about that? Is the transducer cutting out the comp I know the controller has the ultimate say so but that's funky?
Thanks for making this video ! I have not installed any of these type of scroll units yet, So thanks for the heads up. I Would think the Start up instructions would Mention this Weird unit start up scenario. Maybe if u can find the paperwork in the Vangina , that would make a good video of instruction paperwork Notifications.
The Vangina has a lot of stories too tell. Some should not be shared, lol. But thanks for the video on that set up. I am commenting on a 9 month post. Beat me up in it.
I believe it only does that after a power loss, not every time thermostat calls for cooling. It's a safety built in to the Emerson controller. I definitely scratched my head the first time I saw it a few years back. Appreciate your videos brother! Keep up the good work.
I know nothing about a/c, but owned a rheem scroll condensing unit for 20 years. Worked like a dog all those years, with no problems. It finally blew up a couple days ago.
I am glad you posted this video. If I did a start up on one of these then I would be stressing thinking that I made a mistake. 😎
Jeez your the man Dave just installed a freezer and encountered same thing and thought the low pressure transducer was wacky but noticed it did it everytime I cycled the disco. Thanks for sharing.
Good to know, that's for sure. Trying to get management to change out a 25 year old Bohn water cooled system (R502), and was looking into the scroll, but they were 3 HP and up, and this is a 2 HP set up, so no dry heave for me! Thanks for posting, Dave.
I think you can get them tom. It's a freezer right? It will be liquid injected scroll time. Neat stuff.
I have seen this feature on other units. The purpose is to reduce the crankcase pressure prior to starting. It is a safety feature to prevent damage from pumping liquid.
Thanks for the info Murray, that makes perfect sense. 👍
I guess it's cheaper than putting in a Suction accumulator. Those cheap bastards.
+OcRefrigeration,Hvac & Electrical.
It's also for the situation where there's a power outage and the crankcase heater hasn't been on. The unit could start up with liquid refrigerant in the compressor oil.
Even cheaper would be to put a crankcase heater on the compressor.
That unit didn't appear to have a crankcase heater. Manufactures think scrolls are so tough. No need for cch. Just as long as they never run in a vacuum they are bulletproof.
Damn Dave I've installed 3 of those Copeland scroll's, so far and they all did the same thing they started fine after the 3rd time, and I've wanted to ask you if you were dealing with the same issue, but I guess I wasn't the only one!
I bumped into one of these today and Ill give you guys a heads-up... carry a black tarp to put over your head or you'll never see the display. Unless your inside or at night.....
always love to see california landscape/farmland, can you do more farmland in your vids?
Great tip. Thanks for sharing
Thats good to know,thanks for the info.
Do these units have fuses and if so where are they found? Thank you!
Thank you very much
Good info Mr. Dave👍
Hey sir , with what stick you brazed suction valve with copper pipe .
amzn.to/3QzzcqO
Is it the first time it power up or every time it starts, Thankyou!
1st time after power.
Amigo I have a question hope you can reply im working with a similar condensing unit . New condensing for a walk inn cooler. Im using 407c what would be the right set up cut inn and cut out on the Emerson control. Right now they’re set at cut inn 65 and cut out 25 but I feel like compressor keeps shirty cycling
Is it on a pump down ( Tstat/solenoid)?
That's crazy shank what dose the factory say about that? Is the transducer cutting out the comp I know the controller has the ultimate say so but that's funky?
That's the cycle on power up. I wanted to show it so people can see this is what they do at start up. The dry heave then run. Lol
thanks for the tip
Isn't there a notice of this startup procedure in the paperwork?
I never read that stuff. Lol. It's in the vangina I'll have to see if says anything about start up cycle.
There is nothing on the info that comes with unit about the start up cycle.
+Nor-Cal Refrigeration & H.V.A.C Hey, thanks for the reply. Will try to remember that one.
It does that every time it starts?
Only the first time at power up. After every pump down it has a time delay then turns on.
thank's for sharing!!!!
a little 311 in the back ground
Yep
intervall condensing unit
good vid!!
That should be stenciled on the unit.....
And what's the point ?
what ever happened to dials and switches??? now you need to read a manual for everybody Gizmo....this gets old.
Thanks for making this video ! I have not installed any of these type of scroll units yet, So thanks for the heads up. I Would think the Start up instructions would Mention this Weird unit start up scenario. Maybe if u can find the paperwork in the Vangina , that would make a good video of instruction paperwork Notifications.
The Vangina has a lot of stories too tell. Some should not be shared, lol. But thanks for the video on that set up. I am commenting on a 9 month post. Beat me up in it.