Trane rauc 402-A New run capacitors but still not running. HELP

[Danielm61944]

Not sure on the tonnage I’m pretty sure it’s a 4 ton to be clear. But have replaced 2 run capacitors to compressor and to fan as well. Came on once and fails to do so anymore. Would like to replace contacter too since no power is passing thru when calling for cooling. What type of contactor do you guys recommend, also any other possible issues?

Checked continuity on the compressor windings, checked voltage to everywhere, only seeing 230 hit the contacter and nothing coming out the other side.

[Special-K]

Are you a tech or is this your unit?

[slctech]

We are not going to be able to assist you, being that this a non-DIY site.

[hvacvegas]

Have you tried changing the evaporator coil yet?

[pecmsg]

Have you tried changing the evaporator coil yet?

Maybe call someone before you get hurt or hurt someone else!

[Special-K]

Lighten up guys, his profile says he's a HVAC Contractor. Let's let him respond to my question.

[VTP99]

He might of got spooked 👻

[Special-K]

He might of got spooked 

Can you blame him?

Let's give people a chance. He might just be a green tech, and if so we need to try and help him within reason. I'll move the thread if that's the case.

[VTP99]

I hear ya I think the guys here are just condition to the never ending homeowner diyer.
That said yes let's see what is revealed 🤔

[Special-K]

I hear ya I think the guys here are just condition to the never ending homeowner diyer.
That said yes let's see what is revealed 樂

That's still no reason to be rude. I'm about to start taking member's * away if this continues.

[VTP99]

Agreed

[rundawg]

Not sure on the tonnage I’m pretty sure it’s a 4 ton to be clear.

This is a mid to late 1970's unit, and it's rated at 4 tons.

[Danielm61944]

Are you a tech or is this your unit?

I’m a tech but this my unit, just starting off in the field so please bear with me lol. Came into this new home with a poorly maintained unit from what I learned.

[Danielm61944]

Yes lol thank you only been in the field for about a year just started picking up on trouble shooting but mainly installing residential for the most part as of right now.

[Special-K]

I’m a tech but this my unit, just starting off in the field so please bear with me lol. Came into this new home with a poorly maintained unit from what I learned.

I'm gonna take you at your word. I've moved the thread to Tech to Tech where we can help you more. AOP is just for homeowners. Please note the new location of your thread.

Get your post count up and apply for pro membership, that will unlock the Pro areas to you and then we can help you much more.

https://hvac-talk.com/vbb/threads/11...nal-Membership

[Danielm61944]

Thank you I appreciate it, new to the forums.

[rundawg]

Thank you I appreciate it, new to the forums.

Can you fill out your profile more with information about you? Make sure you include an email address too.

[rundawg]

Checked continuity on the compressor windings, checked voltage to everywhere, only seeing 230 hit the contacter and nothing coming out the other side.

So I am guessing you also had 24 volts to the low voltage side of the contactor, but it would not engage?

[pecmsg]

Yes lol thank you only been in the field for about a year just started picking up on trouble shooting but mainly installing residential for the most part as of right now.

Start Reading

[pecmsg]

Not sure on the tonnage I’m pretty sure it’s a 4 ton to be clear. But have replaced 2 run capacitors to compressor and to fan as well. Came on once and fails to do so anymore. Would like to replace contacter too since no power is passing thru when calling for cooling. What type of contactor do you guys recommend, also any other possible issues?

Checked continuity on the compressor windings, checked voltage to everywhere, only seeing 230 hit the contacter and nothing coming out the other side.

What does the caps have to do with the contactor pulling in?
You should research the make and model of the compressor and find out What cap is recommended.