1st of multiple calls at a commercial building. I find multiple stage equipment with typical maintenance issues coupled with refrigerant issues. low pressure switch failed, dirty condenser coils, loose belts, and thermostat issues?
Oh my - the control panel at the start made me laugh. I get calls like that - customer states "it just stopped working, it's not doing anything now" - I arrive - system is in a dozen pieces on the floor - and always no-one knows how it got like that, I just get "it was working fine one minute and the next it just upped and quit ~shrug~". Of course I then have to ask "What, and then spontaneously disassembled itself?". :D Who knows - perhaps it's some artificial intelligence playing a prank on us all :D :D
FYI...Honeywell touch screen thermostats do not require batteries to operate as long as 24 volts on R&C terminals. I have accounts that I purposely leave the batteries out so on my walk through I can immediately see a no voltage to stat. Small coin battery keeps the program. Another benefit is battery acid is not an issue.
Thanks jr. I'm a honeywell guy myself. Never seen this before, but this thermostat worked the entire day while I was there. The next week, making repairs, stat was blank again. Something internal and intermittent, I guess, just weird.
Thanks, Steven. I have a good relationship with this customer. The repairs were made the next week. By the end, I basically had my hands on every piece of equipment in this sports complex.
Just got done replacing two compressor and three different evaporator headers on these exact carriers. Have another one to do tomorrow. Replaced the compressor on one and after replacement had a restricted header. I’m now a pro at replacing these metering devices. Haha. They are annoying. From now on when I diagnose a bad compressor on these carriers I’ll be suggesting a new metering device as well. Apparently they clog up easy.
The new units with TXVs are much better. It should always be a consideration. I will warn before replacing any compressor. Sometimes, you find out what killed it.
I had the same issue after a compressor replacement. We were on our first visit to the location, so no history to reference. Unit was 2006 and very poorly maintained. Recommended replacement over repair, but he wanted to "save" money. Now it is more money into replacing the indoor coil or a new unit. There are 2 more on this place with similar issues.
That's hilarious! I was talking to my friend. The HVAC contractor today, and he just showed me the fancy navak tool! And he told me it was so I could make better flare fittings!
