yeah, call a pro.
ahu trane m#twe060c15fdo s#44355y52v 75' ahu 20'higher then cond. pipes 1/2'liquid 11/8 suction unit down smoke detector started unit 62/320psi found ahu is heatpump/but condensor not,unit is cooling.liquid line cool to touch.going back monday any suggestions
yeah, call a pro.
I`m not real sure what you are asking????????
It`s better to be silent and thought the fool; than speak and remove all doubt.
billva gess your not a pro/i've been doing this 15 year,can always learn something.thinking i have to look for restriction
Is it a new install.
If not, have you cleaned the condenser coil.
What type of metering device.
Whats the indoor wb
The outdoor db.
What was the superheat.
What was the subcooling.
Need alot more info then you posted.
Are you new to the trade.
sorry for the comment.
high head w/ low suction, first, clean the condenser coil even if it "looks" clean.
second, do that and then give new pressures and temps.
third, all temps.
txv,5 month old system,os temp 95 comp.amps 27 cond. fan ok evap.ok
didn't take superheat had to go to another job ,know i be back this monday
Pull the sensing bulb of the txv, and warm it up and see if the suction pressure changes.
Are these the readings you found when you got there, or did you add gas.
you had time to put your gauges on but no time to put a thermometer on the suction line?Originally posted by cold don
didn't take superheat had to go to another job ,know i be back this monday
if you read my first message the unit was off smoke detector.unit been running this way,most likely from start up and person walk away.
Your OP, kinda runs together.
I got 75' lineset, a/h 20' above condenser.
And the pressures.
And off by smoke detector.
But you didn't include anything else you did.
Knowing the pressures alone is meaningless without knowing the superheat, subcooling, outdoor ambient temperature, and return air dry bulb and wet bulb temperatures.
You can't diagnose anything by pressures alone.
Need to know suction line temp?
Low suction / high head = 2 problems
could be restriction where system has been overcharged to compensate.
or, could be dirty condenser with low refrigerant charge.
Richard
pressures dont mean anything. nothing. you cant diagnose anything with just pressures unless its a low charge but you cant charge correctly with pressures.
.subcooling tells us how much refrigerant is in a system
ans superheat tells us where the problem is.
we dont spend hours guessing and looking. we look at subcooling and superrheat and like good little boys and girls they tell us what to do without guessing.
sounds to me like your condensers dirty and you have a low charge or dirty condenser and evap coil or overcharge with small metering devise or condenser larger than air handler or overcharge and dirty evaporator or, or, or. get the pitcher.
now go get subcooling and superheat and we will tell you whats wrong.
sorry but trying to get the message across to everyone who posts here with tell me whats wrong and then gives only pressures, because we cannot diagnose a problem correctly without subcooling and superheat.
recovered freon cut bypass copper solder both ends ,"heatpump ahu"evacuated recharge suction pressure good, thank for input