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Lsn122he/lsu122he runs fine in cool mode but in heat mode defrost symbol comes on and stays on = no heat operation. worked fine this past winter till end of season. note ac mode still works fine.

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6ya6ya
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Posted on Jan 02, 2017

SOURCE: curtailment active

A follow-up to my previous post. I talked with a technician from the Co that installed my unit, and the issue lies in the "Utility saver mode" for the 2 stage heat pumps, and having the high stage locked out. In the Advanced Setup menu (hold the "Advanced" button for 10 seconds to access this menu, look for the "Utility Saver" menu item. Select it and your system probably shows that "Utility Saver" is enabled, which only allows your heat pump to run on the low stage and not the high stage. If you change the the setting to be disabled, this will allow your system to run at the high stage and should solve your problem.

I have not changed the settings on my system yet to confirm this solution. That will have to wait until I get home this evening.

Posted on May 19, 2008

  • 85 Answers

SOURCE: will not go into defrost

Did you change the thermostat in heat pump? or did you change it when you replaced the board?

Posted on Dec 06, 2008

drmengle
  • 2 Answers

SOURCE: axu heat and outside blower fan run all the time

I can tell you exaclty whats wrong . and it sounds like multipart problems. you have an old RUUD heat pump and its reversing vavle is stuck. without that valve opening it will contantly try to run in refrigerant mode to make heat. and here its 26 degrees, het pumps are only made to be effiient in over 34 degrees and that why your electric heaters in the blower section in an in a closit of unit
continously running up you eectric bill big time. cuses for the reversing valve to stick are sitting along time when it was low on refrigernt. or ust plain shut depending on its age. that cicking is the relay trying to open or close the reversing valve swict to make pressure again. any local guy an fix that one. theyre are kits called hard start kits that they hook up to them that shoot an extra zap of jiuse in it to try to free it up if its not totally lockd up being though that you still hear the relays pulling in and out thats good you may have just caught it in time.

now here is a quick test and possible cure but only if you what your doing turn both units off take off the top cover of the old rudd and get a small hammer not a sledgehammer and rap and tap all around the reversing valve. it will be a cylindrical tube black usually have sets of copper or brass tubings going in the 2 sides of this so dont hit itthat hard it gets dents it and is ruined. look for oil spots which uually means the refrigerant leaked out , and its seized up for good. they try spinning around the big out door fan door fan some. you may have to rock it back and forth Till it braks lose but dont put super human efort int it,

than put it all bak together making sure you connected wires back up right. go in and have you wife eithe watch it or you do it and switch the breker on and off about 8 times to trying to get the cnnectors switches to stay in and if your brave take a well insulated screw driver and hold them in for 2-4 miuntes to force it to work. if that doesnt do it call your local repairman and tell him you need a hard startkit only much safer, the cost about 40$ but you labor will be high if he is sent alone so may you can help im out and lessen your bill if the valve cant be made to work again. you may want start looking for prices with that model and serial number and d shut that electric heater off some one to replace it . I hope I helped you out some no charge ( I dont have my Pay Pal acct. set up yet ) good luck tom.

Posted on Jan 12, 2009

koolbreezes
  • 540 Answers

SOURCE: I have a ruud ac

We need model # and serial #s please!

Posted on Dec 22, 2009

  • 8404 Answers

SOURCE: compressor is blowing breaker, fan comes on.

You have a faulty start capacitor. The capicitor helps start the motor ... since it is not doing its job, the motor draws LOTS more power from the line popping the breaker. Have your professional RV service center service your AC.

Thanks for your interest in FixYa.com. Please remember to evaluate this response.

Posted on Jul 05, 2010

Testimonial: "I am a technical Instructor for a major import, so I know my way around HVAC. so glad to have someone who can pin point the problem I found that the motor start fuse on top of the capacitor is melted. it still has some continuity, but looks like your diagnosis will fix it."

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I have a LG minisplit (indoor unit LSN122HE /outdoor unit is LSU122HE) it cools great dehumidifies also and has for 3 months of summer. However its cold now and it will not heat. It runs for a min out


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I have a Kelvinator Reverse Cycle air conditioner - Model # KSR25F-01. When I use the heating operation the "Defrost Mode" has come on and is stopping the air conditioner from working. The unit...


The Kelvinator technician came out and found that our gas was very low indicating that there was a leak somewhere - the gas should never deplete apparently (being a closed system). He checked inside and outside and couldn't find a leak so assumed it must have been an issue with the piping in the walls. He recommended not spending the money to get it repaired - he recommended it be replaced (not a cheap option but it was 11 years old and repairing wasn't likely to be cheap or a long term solution). So not sure if that is your problem but hope it helps!

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Can i install a time temp. type defrost control instead of the demand defrost type in the above unit? also i see no reason for the fan control board (low to High speed) since the fan motor does not call...


Defrost timer might be more reliable here in NY I set them @ 45minutes..The fan speed is out side tempature (ambient) selected ,low speed, running when its cooler out but you still use cooling.HIGH speed being the default speed.High/low during spring and low all winter.If your new motor is only one speed power it direct from the contactor

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I have a goodman self contained heat pump that is 3 and 1/2 years old. I wake in the night to hear what sounds like the fan runnning and running and running and air moving thru the vents. Then I will hear...


Heat pumps are a very efficient design when working properly. But lose efficiency the colder it gets outdoors. I usually tell people when it drops below freezing to turn the thermostat to aux or em. heat. A heat pump can remove heat from 20°f air. But not very well. More heat at 30°f air, obviously, and so on. So the colder it is outdoors, the longer it will operate to remove heat from outdoors. And then, if it can't keep up, it brings on the electric heat elements to compensate. Now you are running both outdoor and indoor heat. This is where it's inefficient and costly. Also, the outdoor will start to freeze up. This is normal unless you can see a substantial amount of ice. The heat pump will engage defrost mode, cycling on the electric heat indoors. And defrost mode is actually cooling mode! The reversing valve in the heat pump switches to cooling mode, cycles off the outdoor fan, and defrosts for a set time or temp. So now your electric heat is engaged, and your indoor coil is a COLD coil! Not hot! Very inefficient. These 2 things are why your elec bill is higher in the winter. So it makes sense to me, if the elec heat is going to be on anyway, to move the tstat to aux or em. heat, when it's going to be below freezing outdoors. This will turn off the heat pump and use elected heat only. The only down side to this is, if you don't have enough elec heat to keep you warm, you may need both heat pump and elec heat. So trial end error until you find what works. Also, have a qualified tech check the system for operation and efficiency. Hope this helps!

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Indoor fan blowing cold air when on heating


The indoor fan will continue to run. When heat pump goes into defrost the outdoor fan stops, the reversing valve switches and the unit is basically working in the cooling mode. In order for you not to feel a blast of cold air in the winter the electric strip heat also comes on so the indoor fan must run while the strip heaters are on.

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How to fix no heat in 95 aurora olds. and a/c stays on with defrost on.


The A/C compressor is supposed to run in defrost mode. The only modes the compressor won't cycle is floor only and face only. This is to keep the seals in the system lubed during the winter.

If you don't have heat, check the coolant level. If the level is low you won't have heat.

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1 Answer

Fan freezes up with ice in winter


They need air, do not cover it when in use.

If ti cools fine in summer then you just have a defrost problem.

Make sure the outdoor coil is clean.
If the coils are clean, then you have a bad defrost control.

In heat mode the unit should go into a timed or temp controlled defrost. If it is frosting up to the point of stopping the fan, in heat mode only, and otherwise operates properly, then its a bad defrost control.

It is reccomended that the defrost temp sensor be replaced at the same time the defrost control board is replaced. Some temp sensors are part of the board and not a seperate component, but not most.

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