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Did you get your EPA Certification through NYCT?

Outdoor coil temperature is relevant because that is how the heat removed from the conditioned area is released to ambient air.

I don't know your husband's age, but this is a young man's work. Their is plenty of lifting, climbing, kneeling, and bodily contortion involved. After a number of years, the little nagging injuries...

The ability of the unit to hold a vacuum does not guarantee that the unit is tight. Consider that even under a perfect vacuum (30" hg, 0 psia) the greatest pressure differential between inside the...

Also used to prevent liquid migration to the compressor in an off cycle.

Often use a heat gun but be careful; they can remove paint.

It's also a real quick way to determine which of the unmarked breakers feeds it:whistle:

I agree Pro. But I actually held the check and felt it chattering.

Thanks Gas. It is a split with the compressor under the car body and the evap in the interior (passenger compartment) "attic". Also, it is a spring loaded check. Condensing temp was low, but I...

Greetings all. I have been asked for advice concerning an intermittent discharge check valve chatter on a subway car air conditioner. It is a Carrier Open Drive 10 ton R- 22 unit with a typical...

If the Hispanic vote is the marker, aside from the immigration issue, on the surface it would appear that they would lean toward the RIGHT: generally hard working people, mostly Catholic, family...

when I ws a kid. Sent to a no cool (resi) for my first call. Find no 24v to contactor, trace it back to stat. As I'm removing the cover, H/O proudly states that it's only a year old & he did it...

Don't be so rough on yourself. We've all seen this and did exactly what you did even though the little voice was telling us it might let the smoke come out of the transformer
:gah:
:cheers:

At least he's kissing cheek at the ANTERIOR end....

It was marketed under a few names. Mine specifically by GE. It's about 25 years old; still my "OLD RELIABLE". I have never tried it on HFCs because there was no such thing as HFC refrigerant when...

Two points to consider:
Even if you were to attain a 500 micron vacuum, that does not mean you are absolutely leak free. The greatest pressure differential between inside your system and the...

What are you going to pull a vacuum on? The system should already be charged and there is no field installed lineset.

All true. And if you have a job at all, you're "rich".

Solenoid closed most likely, but were the txv strainers checked? If one clogs, they both will. Since the system is recovered, open the solenoid and remove the "guts" (diaphragm, plunger etc). Put...

If you experienced multple failures and they have all been electrical, an acid condition likely exists. At the very least, an acid test should have been performed in order to prevent condemning the...

Dirty evaporator would also make it hard to open a cover.

Typically, the tanks are rated for 50 & 30 pounds, so they can (legally) hold 40 & 24 pounds respectively.

Is the house very warm inside? Is there a panel open on the air handler? At 80 psig on the low side, you would have a coil temp of close to 50 degrees.
You specified that the a-coil is clean; how...

You can try switching legs of the compressor (reversing the motor rotation). Sometimes, if you are persistent enough, this will free it. You can also try reversing the rotation and energizing the...

Try www.hvac-pro.org.

They have a practice Universal Exam. I refer my students to it. It's not absolutely great, but it gives you an idea what to expect. Good luck!