Electronic Exp. Valve problem

[scorpx]

Hi all
System is Freezer
I have a problem about electronic exp valve.
I have 2 x Refcomp 80 Hp ( parallel system)
2 x Evaporater
2 x sporlan Xev 22 Driver
2 x Sporlan SEI 30 Expansion valve

I am trying to control Exp. Valves with Superheat.
But when the suction line getting closer the 0.50 - 0.60 bar
expansion valve start to close and system getting stops (because suction getting 0.1 bar)

Now I set minimun close persentages to %28 and solve the problem but. It is not a good solution.

I can't understand the reason.
Do you have any idea ?

[scorpx]

i understand the problem my pressure sensor is 0.5 -11 bar. İ need to change it with 0 -12 bar and probably solve the problem

[chemi-cool]

Try faulty EXV solenoid.

[goshen]

Hi
i would make sure the exv was chosen with the correct mop,if this exv is "big" on the system ,
then your solution for immediet remedy is correct.or possibly as you replied the pressure transducer!
good luck

[scorpx]

Thanks all
I solve the problem finally.
I change the temp. probe and everything is cool =)

[scorpx]

Room temp is -35c
İ set the superheat 6
What is the correct superheat and why ?

Thanks for all