[SirBrowning]

I have a Bryant Evolution 180a/187a unit, there was a crack in the tubing at the compressor, and all the refrigerant leaked out. The unit threw an error code for a low pressure trip. It has since been braised and vacuumed and tested to hold pressure overnight and been recharged with Puron / 410a. Until this crack happened the unit was working fine.

We tried to start the unit, the bottom contactor pulls in, but the top one does not. The contactor tested good and doesn't engage. We did get an error code of 47.

I'm trying to figure out why the top contactor is not pulling in. Is there something that needs to reset on the unit?

Thank you so much, we truly appreciate your help!

 

[beenthere]

Was the breaker turned on, and the outside disconnect turned on.

47 means no 230 volt at board.

 

[kdean1]

Site rules prohibit giving advice for DIY. Your contractor can join the site and present his credentials for technical advice.

 

[SirBrowning]

Was the breaker turned on, and the outside disconnect turned on.

47 means no 230 volt at board.

Yes, both were turned on. The fan turns on and runs, but the compressor doesn't turn on and that top contact won't engage.

Could it possibly be the disconnect fuse?

 

[VTP99]

Complete model number ?

 

[SirBrowning]

Complete model number ?

187ANA048000

I turned off the power, turned it back on, and tried to run it, fan kicked on and now it has an error code of 72 again. Not sure what is going on, but still the top contactor won't engage.

Thank you for your help! I appreciate it.

 

[VTP99]

You stated earlier you had a error code of 47 now it's 72 ?

 

[pacnw]

Is that the infamous 2 stage Bristol?

https://comfortproducts.com/dealer-service-bulletin-dsb140025-bristol-two-stage-compressor/

 

[beenthere]

187ANA048000

I turned off the power, turned it back on, and tried to run it, fan kicked on and now it has an error code of 72 again. Not sure what is going on, but still the top contactor won't engage.

Thank you for your help! I appreciate it.

Time you get a service that is familiar with that models operation.

 

[rundawg]

187ANA048000

I turned off the power, turned it back on, and tried to run it, fan kicked on and now it has an error code of 72 again. Not sure what is going on, but still the top contactor won't engage.

Thank you for your help! I appreciate it.

Have your contractor research the "Technical Bulletin" on that control board (HK38EA003) relating to error code 72.

Side note: If you still have the original compressor in that unit, it is one of the "Bristol Twin Single" (TS) compressors as noted earlier, and you should evaluate all options before putting too much money into this unit.