Costco now selling DIY mini splits.

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Gearhead660

Minister of Fire
Dec 20, 2018
724
Southern WI
I purchased a Mr Cool mini split. The install was easy and straight forward. Their tech support is less that stellar...not impressed. I am having an issue getting mine to run correctly and have yet to hear from them. No one answers calls or emails.
 

semipro

Minister of Fire
Jan 12, 2009
4,083
SW Virginia
I purchased a Mr Cool mini split. The install was easy and straight forward. Their tech support is less that stellar...not impressed. I am having an issue getting mine to run correctly and have yet to hear from them. No one answers calls or emails.
I bought my Mr. Cool Universal units from Ingram's Water and Air and have had decent support. I tried Mr. Cool support also and was unimpressed.
 

Brian26

Minister of Fire
Sep 20, 2013
621
Branford, CT
I purchased a Mr Cool mini split. The install was easy and straight forward. Their tech support is less that stellar...not impressed. I am having an issue getting mine to run correctly and have yet to hear from them. No one answers calls or emails.

What kind of issue are you having with running it correctly?
 

Gearhead660

Minister of Fire
Dec 20, 2018
724
Southern WI
What kind of issue are you having with running it correctly?
There seems to be a blockage somewhere, I think in the indoor unit. Refrigerant isn't able to make a complete loop. In heat mode the pressure will climb to 700 psi and fault out the compressor, in cool the pressure will drop to 0 psi.
 

hockeypuck

Feeling the Heat
Sep 6, 2009
376
south central NH
I installed a 24k btu (Mr. Cool) unit two years ago. Ran like a top for two years. In April the unit died while using it for heat. I emailed tech support and we went back and forth a few times and determined the inside unit's board was dead. They no longer made that unit and board, so they sent me a brand new gen3 unit. You really could not ask for better customer service I was floored. It was a pain to find a local guy come and evacuate the refrigerant, but I installed it and has been running great for over a month now. I hope this one lasts longer.
 
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hockeypuck

Feeling the Heat
Sep 6, 2009
376
south central NH
I purchased a Mr Cool mini split. The install was easy and straight forward. Their tech support is less that stellar...not impressed. I am having an issue getting mine to run correctly and have yet to hear from them. No one answers calls or emails.
Try using the customer service form. Fill it out and they will email you back.
 

hockeypuck

Feeling the Heat
Sep 6, 2009
376
south central NH
There seems to be a blockage somewhere, I think in the indoor unit. Refrigerant isn't able to make a complete loop. In heat mode the pressure will climb to 700 psi and fault out the compressor, in cool the pressure will drop to 0 psi.
Was it operating correctly at some point? I would double check the valves at the outside unit and make sure they are fully open. The allen screw should be backed out all the way.
 

Gearhead660

Minister of Fire
Dec 20, 2018
724
Southern WI

Gearhead660

Minister of Fire
Dec 20, 2018
724
Southern WI
Was it operating correctly at some point? I would double check the valves at the outside unit and make sure they are fully open. The allen screw should be backed out all the way.
has not worked correctly at all. just installed this spring. allens are all the way out.
 

fbelec

Minister of Fire
Nov 23, 2005
3,125
Massachusetts
don't know if i missed this but how many feet is the line set?
 

fbelec

Minister of Fire
Nov 23, 2005
3,125
Massachusetts
25 feet seems ok. but just for giggles did the pressures seem ok? or are there bubbles in view hole?
 

Gearhead660

Minister of Fire
Dec 20, 2018
724
Southern WI
25 feet seems ok. but just for giggles did the pressures seem ok? or are there bubbles in view hole?
Bubbles in view hole??
 

fbelec

Minister of Fire
Nov 23, 2005
3,125
Massachusetts
some systems are like cars you can put in a view hole and if there is bubbles it needs to be charged
 

semipro

Minister of Fire
Jan 12, 2009
4,083
SW Virginia
There seems to be a blockage somewhere, I think in the indoor unit. Refrigerant isn't able to make a complete loop. In heat mode the pressure will climb to 700 psi and fault out the compressor, in cool the pressure will drop to 0 psi.
It does sound like a blockage of some type for the pressure range to be that extreme.
If the isolation valves at both units are fully open then it must be a problem with either one of the units or the lineset.
I would suggest that you look for a location with a big temp differential across it but that really only is helpful if you have a restriction. Your pressures, to me, indicate a total blockage as you say.
 

semipro

Minister of Fire
Jan 12, 2009
4,083
SW Virginia
some systems are like cars you can put in a view hole and if there is bubbles it needs to be charged
Most call them "sight glasses".
I added one to my latest Mr. Cool Universal system install.
 

Gearhead660

Minister of Fire
Dec 20, 2018
724
Southern WI
So after no techs replied from email or voicemail, I tried customer service. They took my info and tech actually called back. After explaining issue, tech had me loosen and tighten lineset. That didn't work. Called again and tech sent a whole new outside unit. Swapped out unit and, tada! Got heat and cool! Took about 3 months to work through it but they came through. Now to see how well it works.
 
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EbS-P

Minister of Fire
Jan 19, 2019
1,503
SE North Carolina
So after no techs replied from email or voicemail, I tried customer service. They took my info and tech actually called back. After explaining issue, tech had me loosen and tighten lineset. That didn't work. Called again and tech sent a whole new outside unit. Swapped out unit and, tada! Got heat and cool! Took about 3 months to work through it but they came through. Now to see how well it works.
Good to hear. I’m going to get either the 12k or 18k DIY unit in the next couple weeks.