hi guys..
is anyone out there using the testo hvac analyzers?
I purchased the new model 523 kit and its lasted just over a week before it shat itself whilst adjusting superheat on a newly commsioned system.

one minute i was getting a temp reading from the clamp K thermocouple and then the temp reading suddenly dissapeared.. Either the thermocouple is faulty or the analyzer is faulty.
Im a little dissapointed but im hoping its a one off problem.
I have heard that there has been a few teething problems with the new 523-556 and 560 . has anyone else had any problems with theirs?