Carrier container old model 69NT40-264

[panchovaz]

How you guy's doing? i just looking for some help! 3 months ago we repair a carrier container old model 69NT40-264 , the txv was cloged this was, change and this container was working fine, but 2 day;s ago the relif valve on the high section is getting open and relif the pression abd we figurated more problems but oll the mechanic part work;s fine so, we thing some selenoid valve is no working but the problem is because we don;t have wiring diagram and we try to located help on carrier but they said is very old model, so we ask to you guy for some help thanks and have nice weekend.

[chillerman2006]

you could have any number of issues here

fans not being controlled correctly

automatic hp switches faulty or linked out

adjustable hp switch not set correctly

and last but not least an old prv that has failed and needs replacing

I would remove the refrigerant and pressure up with nitrogen and check the hp switch's break at correct setting

and see at what pressure the prv's lift

oh and hope you vacced well and changed that drier when you changed txv

as acidic oil strips the laquer from the compressors windings and makes a right mess of the system when it burns out !

R's chillerman

[panchovaz]

Thank you for your information chillerman, I have to check those details .