As you have found out there is not much to look at when you take apart this type of EXV. It is very unlikely that the push rod is hanging up. As for the power head you will need to leave that to your imagination. The actuator either works or it does not. It only takes at most 30 minute to trouble shoot, that's it. This is where ohms law applies.
Originally Posted by ed-man
An EXV has to be told what to do, If I were you I would not look at it for more than 30 minute in your last effort and final test. Its very clear that your problem lies elsewhere.
This is so basic that on average it should take no more than two hours for a true diagnosis. A decade box would help for sure.
Understand the symptoms and you will and you will find a solution.
sorry on response times computer difficulties
Originally Posted by supertek65
Automatic Expansion Valve
It's tube brushing season...93% done (39.35 miles of tubing)...only 1,242 tubes to go!
Original member of the Raccoon Brotherhood.
EVERYTHING IS AWESOME!!!
The trouble shooting methods Trane spells out in their Addendum are pretty straight forward. Keep a stop watch or a stop watch app handy and go into the test submenu.
Originally Posted by alcomech
That and ohming out the windings and checking the integrity of the cable.
I have three EXVs that I changed out 2 months ago if you still need one.
Sure do how much do you want and do you have the part numbers
Originally Posted by jayguy
I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!
I am not claiming to be a chiller tech, but whats your temp difference across your drier, the shell looking thing before your EXV. Or your air cooled or water cooled unit is seeing freezing cold temperatures... Grab your clamp on, check the temp out of the condenser, then check it before the EXV, is it the same temp, if no, why not?