Question about Dometic Rooftop RV Air Conditioner

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Freezes up in 90 degree low humidity. is this fixable? model #620426.331

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Do you have good airflow out of the inside vents? Does it run fine in the daytime then you go to bed and it's frozen in the morning? Let me know what it's doing and i'll try to pinpoint what your dealing with.

Posted on Sep 28, 2010

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I'm dealing with this same issue. Help!!

Posted on Jun 30, 2012

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I am showing a HI on my current humidity/set humidity display what does it mean


The HI indicates that the current humidity is 90%+ in the room/unit. You should check if the filter is clogged. I've seen this message in dryer locations when the dehumidifier coils ice up. Check the coils (behind the filter) for any build up.

If this is a brand new dehumidifier, leave it on for an hour to see if it auto-defrosts. (A similar wait is needed if the room is cooler that 60 degrees F.)

If the unit continues to freeze up and the room is over 60 degrees, you may have a refrigerant leak in the dehumidifier. If it is still under warranty (5 years on the cooling system), contact Haier. The warranty service number is 1-877-337-3639.

The manual for the DE65EK is available here: www.haieramerica.com/downloads/dl/file/id/26/de65ek_manual.pdf . You will need Adobe Reader or a similar program to access the manual.

I hope this helps.

Cindy Wells

Dec 24, 2012 | Haier DE65EK High-Efficiency ENERGY STAR...

1 Answer

I HAVE A HOTPOINT REFRIGERATOR MODEL NUMBER HSS25GFTH BB. BLACK ON BLACK AND MY DEFROST KEEPS FREEZING OVER AND NOT SURE HOW TO SOLVE THE PROBLEM


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AIR FLOW MOTOR VENT ELECTRIC FAN FULL OF CAT /DOG ? HAIR,SEALS ON DOOR TORN OLD TWISTED FREZZER COMPARTMENT DIRTY OR PRODUCT BLOCKING AIR FLOW HUMIDITY CHANGER OUTSIDE AIR WILL EFFECT HI/LOW PRESSURE PUT OLD SETTING OFF ON THERMASTAT AFTER ALL IS ADDRESSED THEN STILL FREEZING UP 90% CHANCE YOUR LOW ON FREON-

May 02, 2012 | Hotpoint Refrigerators

1 Answer

If i set the temp to low on my window air conditioner can it cause the unit to freeze up


Under some conditions, it could freeze up. High humidity levels can cause the coils to freeze. Not cleaning the air intake filter regularly, can also cause the coils to freeze. However, most window units can not be set below 65 degrees. But, in high humidity, it could freeze at that temp.

If you want to avoid the possibility of the coils freezing, operate a ceiling fan or other small fan as fast as comfortable. This keeps the cool air moving a generates a wind chill that fools your body into thinking it's cooler than it really is. Doing this will keep you from having to turn the AC way down and thus, save on energy cost.

I hope this has helped you and thanks for choosing FixYa.

Sep 08, 2011 | Heating & Cooling

1 Answer

MY unit keeps on freezing up no problem with the filter dirty it gave me a problem after 3 months of use . i set it for 60% 50% it freezes up all the time i shut it off let it defrost and same thing all...


I think a part of the problem is that you have the humidity extraction level set to high. 50 to 60% is pretty much the humidity level throughout most of the year. Lowering it to 35%m should make a difference.

If you are using this in a basement application, the temperature at floor level can be 10 degrees cooler than at shoulder level. Most dehumidifiers don't work well at temperatures between 40 & 60 degrees F. Unless, they are Low Temp models designed for basement applications. Raising the unit up off the floor onto a sturdy table, counter top, etc. That can handle the weight of the unit, plus a full tank of water can resolve this problem.

If you can access the cooling coils, they may be dirty and need wiping off with a damp rag. Then flow with a dry clean rag to dry them. A light coating of WD40 helps to preserve the coils.

I hope this helps you to further troubleshoot and solve the problem. Thanks for choosing FixYa.

Jul 26, 2011 | Maytag M7DH45B2A Dehumidifier

1 Answer

I have a Honeywell programmable Thermostat (an expensive one that handles humidity, etc) and every spring and fall the thermostats behave improperly by ignoring the programmed temperature and cooling the...


What is the model number of the thermostat? What may be happening is the humidity control is trying to satisfy the humidity setting by running the a/c. In the installers set-up, there should be a setting to determine how long the system should run to satisfy humidity setting. I typically set thermostats for a 3 degree droop. Meaning it'll only drop 3 degrees below set temp. Also check your humidity setting to be sure it's not set too low. It should be set between 45% and 50%.

May 03, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Unit keep on going out on lock out


Wash out outside coil with hose with 30 degree downward starting at the top and work side to side to bottom and try again. If this don't help check evap coil (inside) for ice forming when unit is on. You should see a 15 - 25 degree drop from room temp coming out of discharge air. This will change with humidity indoors. as it drops temp will too.If outside coil is dirty or unit is low on gar it will cause high compressor and high disgharge lockout. Low gas can also cause freezing of indoor coil and loe temp or pressure lock out depending on type of protection incorporated.

Jun 30, 2009 | Heating & Cooling

1 Answer

Freezing rooftop a/c


My home unit was doing that because it was low in freon and needed charged.

Jun 15, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Is there a heat plug on a 2006 dodge caravan


unless you have a tank full of water there is no worries. There is no heat plug that prevents freezing because gasoline has a very low freezing point ( like 90 degrees below zero) . So just make sure you dont have water or diluted fuel and dont have any worries about it.

Dec 14, 2008 | 2006 Dodge Caravan

1 Answer

Samsung 8000 btu window air conditioner


Air conditioners rely on a difference in pressure between the "high side" and "low side" in order to perform. Of course, a/c's are designed to work in the heat. Having a cooler outdoor temp of 70 degrees probably is not sufficient to maintain adequate head pressure and will result in reduced cooling capacity. Also, since it was 68 in the morning in the room, it is possible that the indoor coil began to freeze up. Basically, you have a cold coil that you keep warm by moving air over it. If the air doesn't have enough specific heat (what your thermometer measures) it can allow the coil to get colder than 32 degrees and the condensate from all of your humidity will begin to freeze on the coil. My recommendation would be to check the a/c on a day that is 80+ degrees. If you have an avarage indoor temp of 70 degrees you should be able to look for the air coming out to be approximately 20-25 degrees colder than the air being sucked in.

Jun 10, 2008 | Heating & Cooling

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