Dpa120dhb1gp danby portable ac not blowing cold air. what do I do? Can I add refrigerant?

Take it into a local refrigeration repair shop. It will save you the callout fee. It likely just needs a top up of refrigerant gas, as mine did.

In most cases, AC is blowing hot air due to problems within this cycle. The most common causes of AC blowing hot air include a faulty AC compressor and low refrigerant levels

I would suggest taking it to your local service shop. They can add the nedded service valve and add freon.

A heat pump is an air conditioner that reverses its refrigerant flow. In the cooling mode, the evaporator is cold to the room and its condenser is hot. In the heating mode, a valve reverses the refrigerant flow and makes the evaporator warm and the condenser cold.

Unfortunately there can be several reasons for your AC-14000E portable air conditioner not cooling well. As with most portable air conditioners the filter grates on the rear of the unit can be removed for cleaning. When those are removed you may be able to clean some portion of condenser coils. There is also the possibility that your portable AC has a refrigerant leak in the system and will not be able to cool effectively without a repair (which usually costs as much as a new portable AC). Portable AC's are not designed to be recharged and operate on a sealed refrigerant line so even finding someone able to repair it may be a challenge. Your best bet is contacting the company you bought it from and talking through some solutions, they most likely have experience with these units and should be able to help you.

the back should blow out hot and at the front it blows out hot
the hot is the air in your room

Hi,
Here is a tip about trouble shooting your air conditioner...

Air Conditioner Trouble -Review the Possibilities
http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi

heatman101

Hi,
Here is a tip about trouble shooting your air conditioner...

Air Conditioner Trouble -Review the Possibilities
http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi

heatman101

You possibly might have a bad switch or have a dirty ac unit.Try 1st turning off the unit and cleaning the inside ...

Your AC is low on refrigerant; The AC compressor needs a minimum amount of regrigerant to run. If and when it does run (while low on refrigerant) the air coming out of the vents will not be cold. The refrigerant you require is R-134A and is available over the counter but if you are the least bit unsure as to how to add refrigerant, taking it to a garage that does AC recharging would be your best play. If you want to try to add refrigerant on your own you will need the following, 1LB can of R-134A, an AC hose adapter to deliver the refrigerant, and preferably an AC pressure guage to ensure you are not overfilling the AC line which will damage the system.