I have an Amana portable AC, Model # AP125D. When you turn it on, it trips the GFI. Can you help me. Thanks.

Because they are garbage. They are to sensitive for the actual start up of an air conditioner. Take the gfi breaker out, when day of inspection put it in. Take it out when inspector leaves.

If everything is dead the first thing you have to establish is that the unit is receiving electrical power. It is far fetched for every component to go bad at the same time!!!!!!

You can replace the wall outlet with a GFI type and cut the ac cord end off and install a basic 3 prong for 120 volt system. AC unit controls don't like ground faults and should be corrected. The cord gfi may be going out.

http://www.appliancefactoryparts.com/airconditioners/amana/ap125d.html

Exployed view picture of parts

Actually, you can find a suitable, flexible type duct at any home center, in the diameter you need. In addition, they'll have the clamps you'll need and the plastic part. Take a piece of the old one with you (if you still have it) for comparison purposes. You may have to buy more than you need, but you'll always have a back up in the future.

Hope this helpd you. Please let me know. Thanks.

The Amana AP125D is made by Haier. I just found the parts breakdown and pricing on their website. Try this link http://service.haieramerica.com/Models.aspx?CID=228.

Air conditioners remove moisture from the air like a dehumidifier does. With portable units it is captured in a removable container and when full will turn the unit off so it won't overflow onto the floor. There should be option for a hose to attach to the bucket which could be run to a drain so you won't have to keep emptying the bucket. Just remember the a/c unit needs to be higher than the drain.

Contact the dealer you bought it from.
For warranty information, please call HSN.com Customer Service at 800.933.2887 (8 am-1 am ET)

If it is out of warranty, and you can get hold of the parts, then as long as you feel confident to change the parts yourself, go ahead. It will only be a case of removing the case and maybe some covers inside to get at the broken components. There is NO rocket science used in the design or building of these things.
All you will need is a small to medium sized phillips head screwdriver and maybe a 7 or 8mm spanner. You may need to cut a couple of cable ties. Make sure you note how the components fit and also the route of the cables as they will need to be routed the same way when you replace the case.
You need to discover what caused the fan to break in the first place. In my experience this cause is normally someone poking something into the grill...

decrease a temp. on thermostat

You are trying to draw too much power from the dedicated electrical line, or you may have an outlet that is needing replaced. Try to use another plug, in another room to test