Isolation Fault + Air Conditioner Problem

[ill]

Hi All,

 

I need your help regarding the next steps for repairing my 2006 Prius.

 

Quick story: I've had to recharge the AC every year because it starts to blow warm air after 11 months. However, last summer, on the 10th month after the last recharge, the AC blew a burning smell that lasted for a minute and then completely stopped working. I went to a recharge station and they refilled it (they know that hybrids need different recharging vs gas car), but it only lasted less than a week that time. After that, I started getting the red triangle from time to time with the error code P0AA6. I reseted it each time. A few days ago, I was unable to reset that code at all. I decided to buy a more comprehensive diagnostic tool, and here's what I got (C1256, C1259, C1310, B1421, B1423, P0AA6):

 

 

Last time I tried to turn car on the main screen blanked out, and the engine does not turn on. So I can only put the car in "ready mode."

 

My questions are:

1. Are these error codes most probably caused by a malfunction of the AC system or the hybrid Battery?
2. Any easy way to fix it?
3. Should I tow the car to an AC repair shop, a hybrid Battery repair shop, or just a general repair shop?

Any advice is appreciated.