3ton Raheem hp CRAZY

[chrisevansac]

Just left a comp change out on a 3ron rheem heat pump scratching my head. After putting the new compressor in and pumping it down I started adding refrigerant. Then I turned it on and as I watched the gauges the head would never rise above 120psi and when I closed the suction side of the gauges to check the pressure it would never go above 5-10 psi. Comp got really hot So I turned it off and I'm calling a tech tomarrow. Anyone seen anything like this

[gravity]

need more information. yea ive seen it before too. a slammed shut txv caused it...but like i said we need more information if you want us to diagnose it

[FrostyBeer]

Calling a tech? Don't take this the wrong way but what are you then?

[chrisevansac]

need more information. yea ive seen it before too. a slammed shut txv caused it...but like i said we need more information if you want us to diagnose it

How did you find out it was the txv

[catmanacman]

Did you switch from cool to heat or heat to cool ,did you weight in the refrigerant .looks like you will find what killed the first compressor ( if it was bad )

[keeplearnin]

No answer, I guess he is a diyer.

[chrisevansac]

Charge is weighed in. I did switch it back and forth and opened up the indoor coil txv to look at the dist tubes. This does look like what burned the other comp up. I also made sure the valves flowed freely. So the only things left are the txv's or outdoor coil somewhere

[acguytx]

Many times ive come across this, come out, failed compressor, swapped compressor start-up immediately showed a restriction and i knew it was the txv. Changed it out for more money and moved on..

I now have apolicy to inform customer that there may be other issues that caused the compressor to fail but wont know until compressor is replaced and additional costs and diagnosis maybe involved. covers my butt now...

[sgagne199]

I now have apolicy to inform customer that there may be other issues that caused the compressor to fail but wont know until compressor is replaced and additional costs and diagnosis maybe involved. covers my butt now...[/QUOTE]

That is the first words i say to the customer when i hand them the estimate to replace compressor.

[chrisevansac]

Just swapped the outdoor txv. Still doing it. Temp diff across the rev valve on the discharge line is 20 deg. It's 64 deg outside. Does that sound normal.

[crmont]

Just swapped the outdoor txv. Still doing it. Temp diff across the rev valve on the discharge line is 20 deg. It's 64 deg outside. Does that sound normal.

Open the LL SV

[chrisevansac]

Lol. I'm changing the indoor txv Monday. Discharge pressure is still 150. Temp off the comp is 145. Suction is 5 psi

[jpb2]

One txv is used in each mode the other is bypassed. Maybe save some time next go around

[chrisevansac]

Yep. But it still did it when reversed

[crmont]

Lol. I'm changing the indoor txv Monday. Discharge pressure is still 150. Temp off the comp is 145. Suction is 5 psi

Why are you changing the other tvx? Your on the wrong track. Your issue is common to both heating and cooling, the txv's are common to one or the other. Your going to add layers of problems to a relatively simple one. You need assistance in the field on this one. Good luck.

[KB Cool]

Hmmm, does it both heating and cooling. Sounds like a liquid line restriction! Literally! I guess it could be full of water too or even some desiccant beads floating around. :grin2: