HVAC-Talk: Heating, Air & Refrigeration Discussion

hi everyone, Hope that you all doing great. Im Payman and from Iran. Im trying to make some good mates in Hvac to become a better in my job. wish you all the best. P.s. sorry for my poor english.

I don't know if I am in the right thread for this but here goes. I own a pet food manufacturing business. I have an old freezer trailer made by Polar King that works great, except... the defrost heater coil in the evaporator does not come on during defrost. It is a Russell 204025065 for what it's worth. I live in the middle of nowhere and there are only 2 folks that work on these things. One it about 85 years old and the last time he was here he cut all the wires in the evaporator and... Russell evaporator not defrosting

I don't know if I am in the right thread for this but here goes. I own a pet food manufacturing business. I have an old freezer trailer made by Polar King that works great, except... the defrost heater coil in the evaporator does not come on during defrost. It is a Russell 204025065 for what it's worth. I live in the middle of nowhere and there are only 2 folks that work on these things. One it about 85 years old and the last time he was here he cut all the wires in the evaporator and... Russell evaporator not defrosting

Have you guys seen the videos coming out of there? What unimaginable devastation! I'll be praying for all the people in that area!

Have you guys seen the videos coming out of there? What unimaginable devastation! I'll be praying for all the people in that area!

HVAC Controls specialist.

I get a COMM5 with wrong xif tables. I can download NXE with nodeutils, but would hang up with the ROVER. After I fixed the nv flow direction/selector/prio and so on. I can download the nxe with ROVER. It's a bit curious.

I get a COMM5 with wrong xif tables. I can download NXE with nodeutils, but would hang up with the ROVER. After I fixed the nv flow direction/selector/prio and so on. I can download the nxe with ROVER. It's a bit curious.

Hi all, I have been reading messages here for few days but my case seems very weird so I wanted to post here and get feedback. Here is the situation- AC slowly stopped cooling or did barely any. Its a carrier 4ton,FV4CNB006. hvac guy came few days back. Replaced the schrader valve and cap on the inlet/outlet pipes and refilled 5.5 lbs of refrigerant. That worked for two days but now its all gone. No leaks detected on the outside condensor coils, etc. they checked with a refrigerant leak... New Homeowner here- HVAC company unable to find issue clearly, need help/guidance.

Hi all, I have been reading messages here for few days but my case seems very weird so I wanted to post here and get feedback. Here is the situation- AC slowly stopped cooling or did barely any. Its a carrier 4ton,FV4CNB006. hvac guy came few days back. Replaced the schrader valve and cap on the inlet/outlet pipes and refilled 5.5 lbs of refrigerant. That worked for two days but now its all gone. No leaks detected on the outside condensor coils, etc. they checked with a refrigerant leak... New Homeowner here- HVAC company unable to find issue clearly, need help/guidance.

Hey All, Been working with a contractor on modifications to my new build ductwork to resolve overcooling in the gathering area and pushing airflow to other areas that are undercooling consistently (Master Bed / Bed 2) and wanted to see if their recommendations are sound as I'm just worried about doing work and then undoing/redoing, like the builder did. Currently system is a 3.5 Ton Lennox Heat Pump with a Fan Profile of 50% for 30 seconds, 82% for 7 1/2 minutes and than if needed, it... Ductwork Modifications New Build

Hey All, Been working with a contractor on modifications to my new build ductwork to resolve overcooling in the gathering area and pushing airflow to other areas that are undercooling consistently (Master Bed / Bed 2) and wanted to see if their recommendations are sound as I'm just worried about doing work and then undoing/redoing, like the builder did. Currently system is a 3.5 Ton Lennox Heat Pump with a Fan Profile of 50% for 30 seconds, 82% for 7 1/2 minutes and than if needed, it... Ductwork Modifications New Build