Goodman Air Conditioning/Heat Pump System: comes on, won't blow any air.?

Question

Model GPH13H, it's a horizontal heat pump system, outdoors. It comes on with the thermostat, but no air blows out of the vents in the house. By "comes on," I mean the big fan comes on (actually kinda sounds like a Cessna) and when I look in the fan cavity, the pipes are iced, so I know SOMETHING is cooling. I've shut it off completely in the hopes that the problem is that the unit is iced solid inside (I'm not opening anything to check, since I have no clue what I'm looking at.) It can't be the filter, because I hosed it off a week ago, and when I checked it just now, it's still clear and wide open. Its only 23 months old. What do I look for here?

Answer 1

Could be low on refrigerant. Just because it is new doesn't mean it is not leaking somewhere. Look around the ground or on the casing for oil. If you see remnants of oil than you have a leak somewhere. When you have a leak, then you will get ice. The only thing cooling is the pipes.

Answer 2

With the coil being iced over there is most likely a leak in the system. You can look at all the connections for any signs of refrigerant oil. You will need to call a service company. If you remove the inside cover where the inside lines go into the evaporator coil, you may thaw this out with a box fan blowing on it. Leave the unit turned off until thawed.  You may then turn it on and see how long it runs before re icing. Be sure to replace all covers before turning back on.

The inside fan could also cause the freeze up. If it isn't blowing,  the coil will also freeze.

Answer 3

Should still be under warranty,  This requires a service call from an AC man.  Call anyone you can get hold of tonight, cause you will have to be in a que for service this time of year.  The fan in the attic is not running, and it may be a limiter switch or something more serious.  You have two fans involved, one on the compressor unit outside, and one in the attic in the air handler which moves the air through the pipes and into the rooms.  The second one is the malfunctioning one.  Goodman units have a classic problem with this.  Cheap electronic parts.

Shut off everything so it melts the ice off.  Just be sure and tell the tech how much ice was on it.  If you continue to run it, you may damage something else.  Good luck!

IN the future, run the fan on "ON' all the time, as it will save the rheostat that trips the unit on.  Turning the unit off and on all the time is what wears it out.  That will leave the room more comfortable, allowing you to raise the thermostat a few degrees, and it will cause the compressor to come on less often.  Your electric bill will also be cheaper, and the universe will thank you for less greenhouse gasses.

Answer 4

sounds like your blower motor has gone out.