AC Problems in Phoenix

When you say stop you stop you mean not air is coming out vents or no blower at all . Wen this is happening is the silver hose marked L cold and compressor whining???

 

It could be (and is very likely) something as simple as the inverter coolant loop getting too warm at those elevated ambient temperatures. When the inverter cooling loop gets too warm, one of the first things the Gen 2 does is stop the AC to remove electrical load from the inverter in an attempt to get coolant temperature to lower, but gives no codes. (The AC compressor is electric and is supplied power by the inverter) Try to find a way to monitor that coolant temp and see what it's doing real time. Make absolute certain the radiator isn't fouled. The engine coolant loop and Inverter coolant loop share the radiator, but are completely separate systems. If the radiator is fouled, it can be preventing adequate airflow/cooling at those high air temperatures.

If that's all good, maybe you can experiment and find a way to provide additional cooling to the IC loop? Install a small aux fan/radiator/heat exchanger in the flow path?

Many people have spent thousands of $$ troubleshooting the AC system intermittent operation when the actual "problem" was in the inverter cooling loop.

 

And when that AC starts blowing hot if you get out of car whip up hood car still running that fat metal silver pipe with L grey cap on it is coooold or not ????? You hear the compressor running and whining while you're putting your hand on that L marked pipe? Something. So then when you get to this pre-specified temperature the compressors cutting out ? So it could not possibly make cold . ? Then I might be looking at inverter cooling loop . Which I imagine if my ice temperature water is in the 200 range my inverter loop is close to that temp also . I might need to get that inverter loop cooler . As that can cut The AC system . I'm not sure ice radiator can force that cut.

 

I'm working on a RAV4 with similar issues it has to do with the blend door from blue to red . So in this instance since the panel not in stock in took heater hoses off firewall and joined now nothing hot in interior of car. At least now wen I put AC on it's actually on and coming out like heat but coming . Panel here in a few days. I should do this to mine . That heater core in cabin at 180 degrees can't be good.