Pentair Ultratemp High Refrig Error


New member
Apr 22, 2020
Mason, OH
Moved from here.
I'm having the same problem.. Brand new Ultratemp 140 installed in May.. had the HIGH REGRIG message a couple times early on but it was cold outside. It worked fine in late May/early June. It started acting up again this last week and can't get it to heat again.

Here's video/audio of what I'm seeing: iCloud

I have no way to measure the flow directly but every indication I have tells me it's circulating well. (Good flow on jets, when I turn on the fountain it shoots pretty high, chlorinator isn't complaining about the flow, backwashing again doesn't change the flow much).

I don't have a bypass path around the heater -- it's straight off my filter. The setup is right out of their manual:

[Pool]-->[Pump]-->[Filter]-->[Heat Pump]-->[Intellichlor]-->[Pool]

I sent Pentair a tech support message on their web site. I'll share what I hear back.


Gold Supporter
TFP Guide
Jul 21, 2013
Northern NJ
Welcome to TFP.

Your video is not opening from iCloud.

Post pics of your equipment pad and the heater.

Open a warranty claim with Pentair.