TXV valve

[captain71]

I work for a hvac company. I just started running around on services calls I wanted to know if anyone have been having problems with new units with the txv valves? We are having lot of problems with new units.
Secondly. How is the best way to diagnose it? hour service technician sometimes not sure if its the reversing valve or the txv how is the proper way to trouble shoot it.
3rd. If you over heat the bulb while welding the copper on a new unit would that effect the txv valve later.
Thanks for any info.

[Shophound]

If you over heat the bulb while welding the copper on a new unit would that effect the txv valve later.

Yes, it can. Same if you overheat the valve itself while brazing it in.

[dandyme]

I work for a hvac company. I just started running around on services calls I wanted to know if anyone have been having problems with new units with the txv valves? We are having lot of problems with new units.
Secondly. How is the best way to diagnose it? hour service technician sometimes not sure if its the reversing valve or the txv how is the proper way to trouble shoot it.
3rd. If you over heat the bulb while welding the copper on a new unit would that effect the txv valve later.
Thanks for any info.

if you read the rules, you know that #2 will not be answered

[timebuilder]

That means getting your post count up and applying for Pro membership, so you can ask in the Pro section.

[captain71]

if you read the rules, you know that #2 will not be answered

Gotcha