Cruisair heating

If they are reverse cycle units, a lot of times the valve that switches the units between heating and cooling gets stuck. Locate it and give it a rap or two while you have some one switch between heating and cooling.

Google " troubleshooting Cruisair"
I found a guide there that might be helpful to you.

Blown fuse?

When you said you weren't getting any heat or cold I thought you meant the compressor was not coming on at all.

You really need to give us all the details at once. Based on what you say now it sounds like you might be low or out of Freon.

Unless your system has been changed over to the new Freon replacement, which I doubt, you can't buy a charge kit over the counter any more. You need to call in a tech.

If the valve was stuck it would most likely either be stuck in heat or cool. I've never seen one stuck in the middle.

On those older units the comes on whether the compressor does or not.

There are a few issues regarding that thought.

One, if the charge leaked out why would you want to refill it just to see it leak out again?

Two, the charge weight in those small systems is critical. Too much and you risk destroying the compressor. Too little and you get lousy performance, most people who attempt a car parts store repair just destroy the unit by overcharging.

Three, if the charge leaked out, chances are there is a lot of air and moisture in the system. Air will destroy the compressor due to high pressure and moisture will freeze and stop it from working at all.

Four, recharging a system with a leak is illegal. The EPA will come and haul you away and put your picture on the front page of the LA Times environmental crimes section.

Air conditioning and refrigeration work is not for amateurs or those who don't have the proper equipment and experience to do it properly.

DITTO! Although I doubt the EPA will haul you away.

"Air conditioning and refrigeration work is not for amateurs or those who don't have the proper equipment and experience to do it properly."

I guess it depends on your definition of amateur. In a pinch with gauges and a little knowledge it's not that big a deal to recharge a low system. Hell, in a pinch I've done it with out gauges.

If all the Freon has leaked out that is a different story.

At this point I think Mr. or Ms. Miller needs to call in a pro.

I guess I would define an amateur as one who might hook up a set of gauges without regard to the properties of the refrigerant in use. Most zeotropes don't take too kindly to simply "topping off" with a bit of gas.

Great idea.

Thanks for my new word of the day for today.

"A zeotrope is a liquid mixture that shows no local maximum or minimum when vapour pressure is plotted as a function of composition.[1] Such a mixture is separable into its component parts by fractional distillation."

And the sarcasm.

No sarcasm intended. A professional with formal training and experience in air conditioning and refrigeration will understand the potential for problems related to the improper handling of certain refrigerants and the specific requirements of certain systems.

There are systems in use where I have no hesitation to "top off" with certain refrigerants in certain conditions. The trick is knowing which systems and which refrigerants in which phase based on the accurate interpretation of the symptoms and operating conditions.

Quote:
At this point I think Mr. or Ms. Miller needs to call in a pro.

Great idea.

Sorry, my mistake. I thought the "Great idea." contained a bit. To bad there is not a tone key on the key board.

Hi ArialMiller, Sorry for taking so long to get back to you.
The advice you've been given here is prolly better than the troubleshooting guides alone, however, do a google search " troubleshooting Cruisair pfd" and you will find too many links for me to list for you.

It'll be good to learn some about the AC unit so maybe you won't be taken advantage of by unscrupulous contractors.

Good Luck