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thanks for good advice & good links

thank you
is it any certification should be taken?

good morning

then it is soo dificulte work :putergreet:

what is the rules that we use in selecting the presedent?

in these days all actions can be happen

i wona be certified to work in that field in usa
what is the steps?

wellcome all new member

i think that my words are uderstood in the bad side
what is the confliction that you get from it?

dear prof
is it any new method to recover bad oil that scape in to evaporator coil ?

sooooooooooooo quat

thank you

your word actually too hard

thanks for you Is it any method to protect my compressor?
EEV IS CARL&i have thermestor &L.P tranceducer that sending a signal to controller and then ordering EEV

i have a problem with this unit that give me low pressure alarm and my charge is ok and also my compressor is ok but i am not sure about signal that recieved to expansionto open it if any one helping...

low pressure rating &performance

i like r134a than 410a

i have a uniflair DX units in a data center
and a Carl expansion valve on it

Be happy enjoy with your family

i have a problem with my stepper txv , it is close before the compressor &this leading to low pressure alarm .
how i can do with this problem?

your are welcome eric
i have some expirence in this unit

does any one know howto deal with electronic expansion valve?

is any one work at telecom or data center compny?
as i have some questions

it may be still in use

know i start to deal with high performance AC
as my new work at data centers