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Thermostat shows A/C is on. The outside unit seems to be on, atleast the fan I know is. Nothing is coming out of my floor registers. Please advise. Thanks

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Could be a frozen coil blocking the air.a dirty filter.bad blower motor.have you found any ice.

Posted on Aug 05, 2008

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1 Answer

Luxpro psd111 thermostat shows snowflake (sometimes blinks), outdoor fan works, but no cool air comes out inside- no air flow at all. Is it the thermostat or an a/c unit malfunction?


If the outdoor unit is running the indoor fan should definitely be running. Turn power off to indoor unit. Put red green and yellow wires together behind the tstat with a wire nut. That is power (red), indoor fan (green), and compressor (yellow.) Turn power back on. This is bypassing the tstat and you should have indoor fan and outside running as well. If yes the problem is in the tstat, if no indoor fan the problem is in the unit. Good Luck!! Let me know!!

Apr 28, 2017 | Heating & Cooling

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Fan on unit comes on but no cold air comes from the registers


is the outside compressor running or just the condensor fan.

Jun 18, 2014 | Goodman Heating & Cooling

1 Answer

Fan on unit comes on but no cold air comes from the registers


several possibilities inside fan not running,dirty coil,duct work problem. turn tstat to fan on position see if it make a difference.

Jun 18, 2014 | Goodman Heating & Cooling

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My compressor doesn't turn on. My thermostat


you probably need a start/run capacitor. on the out side condenser unit. about $100.00 to have it fixed,

Jul 03, 2010 | Heating & Cooling

1 Answer

Unit makes noise, but no air is coming out of vents


check the unit in attic for iced up and outdoor unit you may notice ice on lines or connecting tubing and in attic also-------- if so turn unit off at thermostat and leave fan switch on the thermostat to on while sytem switch is off
should be nothing running but the indoor fan
will have to thaw if it is iced up for a while couple hrs. a guess
you will know when it is thawed as your airflow will begin to come back

check your air filter to be sure it is clean
suggestion only-- keep your house thermostat set at 70 degrees or above
you may have developed a refrigerant leak (freon) which would require a hvac service tech to verify.
if it was iced you can turn all back on and try again once you have good airflow again.
or if your system has not been serviced lately? might be a good time to have it serviced?

Jun 21, 2009 | Heating & Cooling

1 Answer

No cold air coming from the registers.


If your compressor is running outside (low hum noise) then your probably need freon .If the compressor is not running could be a bad cap or bad compressor

May 22, 2009 | Heating & Cooling

1 Answer

UNIT RUNS AN EXCESSIVE AMOUNT OF TIME AND AIR IS COOL NOT COLD COMING OUT OF VENTS CARRIER 58DLA / 58DLX CENTRAL AC FAN AND COMPRESSOR ARE OPERATING BLOWER IS WORKING UNIT IS TURNED ON TO AC TEMP SET AT 76...


DOES THE HOUSE FEEL DRIER IF IT IS 80 OUTSIDE WITH ALOT OF HUMIDITY THE UNIT WILL RUN FOR A LONG TIME TO REMOVE THE MOISTURE(HUMIDITY) OUT OF THE HOUSE BEFORE TEMP DROPS DRAMATICALLY IS THERE WATER COMING OUT OF THE DRAIN PIPE OUTSIDE

May 03, 2009 | Carrier Heating & Cooling

1 Answer

No cold air blowing out


Check for power at the outside disconnect and main circuit breaker in the main power panel of our house. If you have power at the disconnect and the contactor is clicking there may be a loose connection or burnt off wire at your contactor. There is a removable cover on the unit where the wire connections are and you can inspect it by removing said cover. If repairs are necessary disconnect power and remake connections.

Jul 17, 2008 | Heating & Cooling

3 Answers

Blower fan keeps shutting on/off,


Your blower fan turning on and off shows your thermostat is working. I am willing to bet you have the fan in the automatic condition. Check for a sticking contactor at the outside unit.

May 31, 2008 | Heating & Cooling

1 Answer

Fan not blowing


Even when the power is off at the unit outside the thermostat will supply power to the contactor of the outside unit. This may give a hum or buzz as you stated. If when the power is on to the outside unit the fan tries to start but only hums the motor may be bad. Does the compressor start and run?

May 06, 2008 | Weather King 10AJA2501AH Air Conditioner

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