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Turn power on the air conditioner nor heater come on the fan does not work either. Recent thunderstomr moved through are lost power once. No power surges or evidence of lightning strike. Still I change out the circuit breaker.Problem remains. Turn on switch nothing happens

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Main breakers are in the house panel. Most disconnect switches outside near units are cartridge fused.

Posted on Mar 31, 2011


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Fujitsu airon ASTA24LCC 2 flashes green and red then 5 red flashes any idea what it means

Had similar problem (ie. 2 green & red flashed followed by 5 red flashes - Fan blowing but not cooling ... I also noted that the outside unit fan wasn't going). Tried restarting several time after waiting only a minute or two after turning the mains power off but with no change. So turned the unit off at the mains power and then fired it up about 2hrs later and it was all working fine.

Jan 24, 2013 | Fujitsu 24C1 Air Conditioner

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Need a pic of a goodman heater sequencer wiring diagram m1 m2 m3 m4

Even if one could be obtained how could you know the heater is wired as it was originally? Just wondering is all. A sequencer does 2 things: Warms the vents before the fan comes on so that warm air comes out when the fan is powered up AND stops the breaker from tripping. If all the coils and the fan came on at once then that would overwhelm the circuit and throw the breaker. What the sequencer does is turn on one element at a time in 30 second intervals and turns the fan on. All of this is done in steps by heating up the sequencer's bimetal in the base of it with low voltage. What you want to do is bring a heater element on first then the fan and then 1 or 2 more elements. Sorry I cannot give you a diagram can only tell you how they work.

Dec 01, 2010 | Heating & Cooling

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Heat/AC unit will not kick on.

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Jan 18, 2010 | Ruud UBHC Air Conditioner

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My heater in my house starts up but as soon as the fan starts moving it makes a clunking noise

Thats an indication that the fan is hitting an obstruction or the squirrel cage is broken.

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Jan 07, 2010 | Whirlwind FH-778 Air Conditioner

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Air conditioning fan won't start unless I move the blades to give it a "jump start". Is this a capacitor problem?

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Sep 28, 2009 | Goodman CKL42AR42 Air Conditioner

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I've got a Danby DPAC 8399-4 portable heater/air conditioner. We usually use it as an A/C but we're trying to use the heater for the winter; we just brought it out of the closet. The fan barely works (and...

Check for obstructuions in the fan housing that may be hitting the fan blade, causing the noise and improper air flow.

Improper air flow will cause the uniot to overheat quickly and it will shut down on its high temperature limit switch.

You may also have a bad fan. Bad bearings will make a bad noise as well. Thios will cause the same symptoms described above.

Check for abstructions, if you can find one, remove it, if not replace the fan. You can usually reset the limit by simply turning off power and turning it back on after 10 min.

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1 Answer

Fan won't come on, either when heater or air-conditioner is turned on.

you have lost all control voltage. that is generated in the furnace. either the transformer has failed or the fuse in the transformer board has blown or the circuit breaker to the furnace has tripped or you have an open circuit to the furnace in the high voltage wiring. grab a volt meter and start with checking high volts at the furnace and back to the panel. if you have volts then start checking to see if transformer is generating low volts. as a side, if this is a furnace be sure the door is on secure and the door safty switch is depressed or guess what! no fan no volts no nothing. if any lights on board are flashing etc then you have power and it becomes a control problem. be sure your low voltage is getting sent to the stat via red and common on the furnace terminal board. good luck

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Sounds like it may have lost power. Check the breaker and the fuse at the furnace. If they are all in the on position and working then it sounds like you may need a technician. If the display is blank on the thermostat you may also want to replace the batteries.

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Air conditioner blower

From your discription... I would think you have a problem in the thermostat. Does the fan run in cool if you put the fan in the ON position. Some older t-stats have a jumper between terminals that brings the fan on in cool. You will need to find out if there is low voltage power between the green t-stat wire and common in the air handler. If you have a Gas furnace the fan comes on by a temp control also there is a door switch. If the door is off the door switch will be open. and no fan.

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