Question about Heating & Cooling

1 Answer

Indoor fan blowing cold air when on heating

Rheem air conditionerModel# RMSU-48HWhen condensor defrost on heating mode should the indoor fan still be running or must it switch onand off as unit sicles?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 674 Answers

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.

Posted on Jun 04, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a neo plasma lg 7kw will not heat LG Air conditioner


Make sure the setting on the remote is correct . Sun symbol for heating. Make sure the filters are clean. On heating, the indoor unit will 1/2 open the flap but the fan shouldn't start. The outdoor unit should start and if working properly, will be blowing cold air. The indoor unit will open the flap fully and the indoor fan will start once it gets hot then you should feel warm air. If the outdoor unit is blowing warmish air, I would say the reversing valve coil has failed or one of the indoor temp or pipe sensors are faulty. If a sensor fails, a "CH" error should appear on the display.

Mar 30, 2016 | LG Heating & Cooling

1 Answer

Coolant fan doesn't come on unless I run air conditioner.


"Coolant Fan" is not necessarily a common term used to refer to any particular fan in a standard HVAC system. Are you referring to the "Indoor Fan" that circulates the air within the living space???? OR are you referring to the "Outdoor Fan" or "Condensor Fan" that circulates the air across the outdoor coil ??

If its the indoor fan on an air handler that's not running unless its in A/C mode, it will be a faulty heating circuit fan relay on the main control board.

If its the outdoor fan and its a heat pump system the outdoor fan stops during the defrost mode so there is a slight possibility the system defrost board is faulty and stuck in defrost.

A little more information may help obtain a more specific answer.

Apr 14, 2015 | Heating & Cooling

1 Answer

Coil icing up


make sure the filter is very clean. make sure all supply grills are unblocked and open. make sure the indoor fan is blowing. icing coil is normal during heating mode the system will defrost using a sensor. sometimes during cold wet weather the coil will stay iced up. sometimes in cooling mode when it is cool outside 60 degrees or less the coil will ice. low freon will make the coil ice up ,also defrost control not working will cause the coil to ice up

Sep 06, 2013 | Goodman PHKJ048-1 Air Conditioner

1 Answer

Indoor fan slow to rotate in heat mode and no heat/compressor


The indoor fan will not run at normal fan speed untill the indoor coil reaches 32oC. This is done so that a cold draught is not felt when outdoor unit is not running. Check to make sure the outdoor unit is operating. If the outdoor fan is running but there is no indoor fan after 5 mins then you must likely have a gas issue or a fault compressor circuit.

May 31, 2010 | Fujitsu 24R1 Air Conditioner

1 Answer

Is it normal operation for these units to EVER blow out cold air or "nonheated" air when unit is in heat mode?


Yes. Heat pumps have to go into defrost just like a freezer when the temp gets too cold outside. The heat pump will temper the indoor air electric heat.

Apr 12, 2010 | Amana PTH123B25AJ Heat Pump Air...

1 Answer

Our air con runs, on heat, and after a time cuts out, blows cold and makes a sort of hissing noise (but not a real hiss) and then shuts down. It then restarts after a couple of minutes. Is this normal?


Yes.Think of a heat pump as a A/C in reverce in cool indoor coil is cold&outdoor coil is hot.Naw indoor coil is hot &outdoor coil is cold&fan is pulling in cold air from outside.its going to iceup& go into defrost cycle.If your unit has a timed defrost every 30,60,or90min.(witch ever yours is set for)Defrost control board checks a sensor on cond.coil,if it is frozen unit goes into defost.You will here a swishing noise,iis the reversing of refrigerant.you will also notice the outdoor fan is not operating&at termanation of defrost fan will blow out steem.the other metod is on demand defrost.when coil freezes unit defrosts.

Mar 02, 2010 | Heating & Cooling

2 Answers

Defrost Cycle Problems


You need to replace the defrost board and sensor

Nov 21, 2008 | Weather King 10AJA6001AH Air Conditioner

1 Answer

Our toshiba ras13 skv a heat pump keeps going to pre def mode and not heating the house


this happens when the outside temp is low, asthe outdoor unit blows cold when in heating (reverse) then the unit goes to pre def to avoid it freezing. You should hear a whoosh this is the heat being blasted to the outdoor unit to defrost it, then the heat has to build up again before the indoor unit fan runs up again and blows heat. Mine does the same every 20 mins or so (its -2 outside) brrrr
Leigh

Jun 18, 2008 | Heating & Cooling

1 Answer

Mitsubishi wall unit srk50zg condenser src50zg air con not heating new install


Double check your wiring .if the indoor fan is not blowing then you either have an electrical issue OR bad blower motor .

May 24, 2017 | Refrigerators

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2463 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...