fan cycling switch...

[primmers]

what the formula for setting these that you guys use?

[orland25]

by pressure by temperature and for which you want.

[primmers]

that i know....but each refrigerant is different..
what im asking is how do you know when you want the fan to come on and go off..right now i dont let anythig get to 200psi with out the fans comming on..
but there has to be a better more accurate way of doing this..

same with the high psi cut out i check the condensing unit for its tested high pressure reading and set my high psi shut off under that pressure..

remember, im home taught...ive gone over my books and cant find anything helpful.

[wannafreeze]

I look at pt chart,aim 110*F avarage condensing temp.for about 100*F liquid temp.
for example r22; 110*F/226psi
200psi-250psi,100*F-118*F
r404a; 110*F/270psi
100*F-120*F, 235psi-310psi

[orland25]

Okay; first excuse my inglish i front Puerto Rico. But I understand your question, many units work of that way,but the Formula to put the fans to goes off and on every 1,2 or maybe 3 minutes, I not thought before that question. But the efficiecy of the unit should be better.But I try seeking the information.

[primmers]

orland25, no worries, your english is fine....i got what you were saying..

wannafz..thats what i was looking for..i didnt know the temp we should be looking for..thanks..