HVAC Troubleshooting 1

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May 15, 2012
juanito8288 Says:
Dr. le mando saludos thank you for being who u are.

May 15, 2012
juanito8288 Says:
Cuando tienen que presionar el contactador y lo dejan ir no funsiona acuerdense en chequear los 24 voltios ok.

May 11, 2012
supermodo417 Says:
Orr the outdoor coil could be dirty perhaps.

May 6, 2012
DrZarkloff Says:
From what you're saying, I think that the button you're describing is the high pressure switch. It sounds like the high pressure switch is bad.

May 6, 2012
moldovannaydia519 Says:
Plz help...my outside fan will not come on....i pressed the button with a spring on the unit & it comes on but when realese it it stops...what causes that & what can i do2fix it thks

May 5, 2012
Calumniation Says:
Control voltage comes from the transformer. Refer to manufactures diagrams to transformer location. And the wire carrying 24V comes from the red wire.

Apr 25, 2012
jamar2483 Says:
Lol thank you i found out what was wrong Dr..it was my circuit breaker

Apr 25, 2012
DrZarkloff Says:
Please help me to help you. Please spell out the acronyms. I'm not good at figuring out the letters.

Apr 23, 2012
jamar2483 Says:
Dr my email is jamarwinston@gmail.com

Apr 23, 2012
jamar2483 Says:
Dr i have a question im a hvac apprentice when i use r.w. The furance come on when i go y.c. Da condenser dnt come on im thinkin my contactor because it want pull transformer gd board gd ... help plz lol

Apr 17, 2012
DrZarkloff Says:
Yes and yes.

Apr 16, 2012
mcdavidhome100 Says:
Ok thanks. I went ahead and replaced the contacts anyway because it was very old and inexpensive. So far the unit is running good. Just to be sure, doesn't the control voltage come from the thermostat? And isnt that wire usually yellow?

Apr 16, 2012
DrZarkloff Says:
More than likely the contactor isn't getting control voltage for it to energise. It could be a pressure switch or some other safety that has it locked out.

Apr 15, 2012
mcdavidhome100 Says:
Hey thanks a lot for the video Dr. Z. I'm having what I think to be contact issues with my AC. The compressor won't come on but when I manually press the spring loaded button on the contact itself, it comes on fine but turns off after releasing. Does this means my contact switch is bad?

Apr 14, 2012
DrZarkloff Says:
Thanks for watching. It baffles me when I see techs connect the gauges to a system right away.

Apr 10, 2012
tony casteel Says:
nicely done i would have done the check the same way my dad drilled that in my head (you sure you dont know him lol)he always said never worry bout the gauges untill the last resort on anything(i serviced ice machines mostly for his commercial accounts)and the slight drop from just hooking the hoses up could drain a unit of its juicefor times we had to use a gauge we made a gauge ourselves that was the gauge head and just a stub if we needed to check charge

Apr 7, 2012
vivalosdano Says:
Thanks Doc.

Apr 7, 2012
maness2112 Says:
Check valve? Wtf?

Apr 7, 2012
maness2112 Says:
You don't check for continuity on a live circuit you will get unusual readings.

Apr 3, 2012
Intirami Says:
Silly Girl!!

Mar 31, 2012
DrZarkloff Says:
Thanks

Mar 28, 2012
alimuh007 Says:
how can anyone dislike this vid???

Mar 7, 2012
P8uyan Says:
Thank You HVACS.CA

Mar 3, 2012
BUDDAz1g Says:
will do thx

Mar 3, 2012
DrZarkloff Says:
You might want to check out my tools videos.

Video Details

This is the first troubleshooting video. Attention: Do not try any of what you see in this video at home. It takes at least two years of HVACR schooling to become qualified to learn in the field how to work on heating and air conditioning equipment. Then it takes another three years of apprent... More