Question about GE Zoneline AZ38H12DAD Split System Air Conditioner

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I have 3 Fujitsu heat / cooling multi split ductless units connected to one rooftop unit. Only in heating mode and only coming from the same indoor unit is a loud almost screeching/vibration sound. It can happen after the unit is on 30 mins or sometimes not until the next day. Repair techs are stumped as they don't see anything wrong and of course the noise doesn't happen when they are here. The noise is so loud I have to turn the unit off. Does anyone know what this could be?

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  • Master
  • 1,386 Answers

If it happens in heat it must happen in cooling. The indoor unit has nothing to do with if it's heating or cooling. You likely have 2 moving parts in the machine, the blower wheel and the swing fins. Turn swing option off, eliminate that. You get the rest...

Posted on Jun 04, 2017

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Posted on Jan 02, 2017

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bobotfel
  • 236 Answers

SOURCE: new install. 40 seconds on. 20 seconds off.

Its normal that the air coming out is warm cause you set it to heat mode. Check your setting temperature, it is normal for the unit to shutdown when it will attain the setting temperature and operate when the temperature is lower than the setting temperature(heat mode).

Posted on Mar 05, 2008

heatman101
  • 43501 Answers

SOURCE: I have a fairly new

Hi,
These units are not quiet on a good day....they will make all sorts of noises when they go from heating to the defrost mode...which is actually the cooling mode and thus the cold air...
Does seem as though the heat strip is not installed correctly or the heating element is not working right...the unit may not be programmed correctly also...
If the unit is a bit low on refrigerant it will make even more noise...

You may also have a bad compressor which also can do the same thing....

Without having gauges on the unit and observing the operation and noises it is impossible for me to positively diagnose the problem... there are too many things that is "could" be....
I would hire a reputable HVAC technician to come in and diagnose your problem(s)....

If the unit is still under warranty the work will have to be done by an "approved" GE technician for you to get the work covered under warranty...

Installed 89 of those units in a brand new hotel last spring and while many worked okay... many would not have passed "My" inspection....

heatman101

Posted on Mar 01, 2011

mc1bean
  • 3053 Answers

SOURCE: why won't my lg ductless heat pump regulate the room temperature?

After I have been reading up on your unit it appears that the thermostat is not operating correctly. I found this real basic information on installation for your unit. This link I am giving is pretty basic instal schematics. But seems to be something about your thermostat needs to be dialed in or is not working properly.

http://www.premsales.net/docs/GE/GE%20Minisplits.pdf

I hope this helps some. Mike

Posted on Oct 21, 2011

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This unit comes with a remote control (optional wall mounted wired thermostat available) as a standard feature. This unit is precharged with the environment friendly R-410a refrigerant. No additional refrigerant is needed if the line set is 49 feet in lenght or shorter. In addition to its very high 20 SEER efficiency rating, the 15RLQ is only 31 in. long which makes it the smallest Mini-Split System in its category through out the industry.
This category of equipment is ideal for smaller spaces where spot cooling is required. Several models in this category are ENERGY STAR Certified, meaning they save you money on your utility bill. Residential applications including sunrooms and additions are made easier with these air conditioners and heat pumps. Do you have a warm spot in your home? Fujitsu mini-splits can provide extra cooling capacity for those hard to cool areas. Commercially, their small size makes them ideal for small offices, providing individual temperature control.
Fujitsu's I.A.Q. Systems provide residential and commercial property owners an innovative solution for clean, temperature-controlled indoor air. The Halcyon IAQ systems deliver powerful heating and cooling, are designed for ease of use and maintenance, and feature an unobtrusive design which can be integrated easily into any decor. The Halcyon IAQ systems filter dust, pollen and odor making them the perfect addition to any home!
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