No air coming from AC/leaking AC

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  #1  
Old 06-21-15, 07:33 AM
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No air coming from AC/leaking AC

My AC unit (I believe a ~1990's RUUD) was working fine until yesterday, when absolutely no air started going out the vents. The fan set to ON was also not working. So I left the AC/fan off overnight. Then today both the fan and cold air started working fine. However, there seems to be some kind of a (minor?) leak from the body (pictures attached), and I am thinking this may be related, and the no-air issue may reoccur. Any idea what may be happening?Name:  11638964_10153412374228850_81417173_o.jpg
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Old 06-21-15, 07:38 AM
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It may have frozen up due to lack of refrigerant or lack of airflow across the indoor coil.

Could you hear the indoor fan running when it failed?

Did you notice any ice anywhere when this occurred?



Is the air filter clean?
 
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Old 06-21-15, 07:59 AM
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Yes, I could hear something running yesterday - not sure if it was the indoor fan.

I did not notice any ice (I don't think there was any indoors, but I did not check the outdoor unit).

The air filter was scheduled for replacement in a week - so it was not very clean. So I replaced it yesterday anyway.
 
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Old 06-21-15, 08:06 AM
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Is the suction line between the indoor unit and the outdoor unit cold and sweating? (Shown with ice on it in the picture)

It is the larger of the 2 copper pipes.
 
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Old 06-21-15, 08:43 AM
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I am not sure which one it is here? The black pipe looks wet in a couple of places, but it also rained a lot last night, so I am not sure? Name:  photo.jpg
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Old 07-05-15, 07:35 AM
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My heat pump in not working properly and I believe it is a mis-wired thermostat

I have a heat pump with a 5 wire thermostat wire. The existing thermostat is ancient and does not use batteries. Presently the existing connections are as follows: g - green wire, c - blue wire, r - red wire, y - yellow wire, and o - white wire. These are all the wires. I want to instll a newer Honeywell and am unsure if I need to have any jumpers on the new thermostat or simply attach the wires so the same corresponding letters on the new thermostat. Any help
 
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Old 07-05-15, 08:07 AM
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Your current thermostat uses pretty conventional color codes. Here's what the colors mean and what they do:

Green - Energizes the air handler (inside blower)
Blue - This is your Common or ground wire (return for the 24VAC)
Red - This is the 24VAC powering the thermostat and the control signals
Yellow - This is the control signal for the A/C (outside unit turns on when 24VAC is present)
White - This is the control signal for the Reversing Valve (controls whether Heat Pump is in Heating or Cooling mode)

Your new thermostat should come with a wiring diagram instructing you how to connect it. If your new thermostat has both an R and an Rc terminal, you will likely need to connect the two together (may already have a jumper on thermostat).
 
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