[Robhenry]

Just installed a Goodman 3 ton heat pmp in my home. new thermostat, new line set, new a coil, all three ton. I change the line set to a 3/4 to 3/8 in order to attain a greater efficiency even though the system is a r22 system. ..... I installed the heat pmp with an existing trane furnace i noly wanted to use for emergency heat and I wired the thermostat with emergency to cut on the furnace. wired everything........my problem is the compressor. My condenser fan motor comes on, but the compressor does not. I changed the capacitor because I had a new one,( Mind you unit is 2 mos old), ohmed the compressor
1.0 ,2.5, 3.5, checked out ok,,,,I have 240 volts, as i listen to the unit every2 or 3 min. there is a sound coming from inside like something trying to cycle, i think, regardless i have checked all my connections and cannot figure out this problem.

 

[ChaseAir]

Check the wiring REALLY good. They have come wired wrong before. If it ohms good and you are sure you have a good capacitor then it should run. Is it drawing locked rotor amps?

 

[Damien]

You need 3 things, power - path - load.

 

[blunsford]

I agree check wires make sure that they have everything right. If so maybe try a boost or hard start kit to break it loose. My money is on wiring. Either at comp. Orwrong phase to run cap

 

[lynn comstock]

Did you open the service valves? If not, I hate to think about what else you didn't do.

 

[dandyme]

if those are the correct readings when you rung that compressor, you gotta problem

 

[Robhenry]

Input Appreciated

Thanks for the input. service ports are definately open. I havent checked lock rotor amps. Will do that today as well as check wiring. More investigating will return with results. :gah:

 

[SoFlaDave]

If the evap coil is equipped with a TXV you WILL need a hard start kit installed. Actually do yourself a favor and add a hard start kit to any condenser that has a recip compressor. I hate to brand bash but I swear to god every time I put in a Goodman with a recip i'm back there within a few days because its sitting there humming. I put one in Friday and it only fired up at initial start up and I was back the next day putting a hard 5-2-1 start kit on it and haven't been back since. This one had a Bristol recip in it and it was on a 30 year old cap tube AH.

 

[ChaseAir]

Dave, in Florida how many more years do you want to get out of a 30 yr old cap tube system and don't you have a concern about compatibility with the metering device? Must have been an apt building?

 

[SoFlaDave]

It was a dry charged 22 unit, a last resort for someone strapped for cash. Even though its probably not getting anywhere close to 13 SEER its doing a better job than the blown out compressor we took out. Worst case scenario is the coil springs a leak and we put up a Trane that can be switched to 410a or 22 if they want to upgrade in the future.

 

[Robhenry]

Checked everything again. Decided that the compressor was bad. Took it out and replaced under warranty. I had help deciding since I had a buddy told me he had a compressor do the same thing{good ohm reading no start}. Runs good now still working on getting the charge right. they make them hard to bend over the tall coil and solder a compressor in. it was quite a chore. I hate to change compressors. I gave 500 bucks for it and it is three months old. great deal since I am a tech I can keep the thing going for a little while anyway until I can get up enough money to put a better unit in. By the way this unit is installed in my house. i can keep an eye on it. ,,,,,
I have heard of techs pumping refrig. down into the compressor. any problem with doing that. I usually recover and recharge. I know the compressor companies don't like this

 

[Robhenry]

SoFlaDave, I thought pretty much all they have now is scroll compressors? Im pretty sure this is a scroll

 

[Robhenry]

I am in the industry tech to tech. I have installed 8 systems this summer on the side helping people with needs that dont have 5 to 7 K to install the bells and whistles. they are thankful for an alternative and i stand behind the units.

 

[SoFlaDave]

SoFlaDave, I thought pretty much all they have now is scroll compressors? Im pretty sure this is a scroll

Probably on the 410 units but the dry charge units have all been Bristol or Copeland recips.

 

[lynn comstock]

I am in the industry tech to tech. I have installed 8 systems this summer on the side helping people with needs that dont have 5 to 7 K to install the bells and whistles. they are thankful for an alternative and i stand behind the units.

Do you have the boss's approval? Are you using company tools, truck, parts or supplies?