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I cant get it to set below 78 degreees for a/c. The house is very hot and the a/c will not kick on until it gets 80 degreees in the house.

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If this is a central ac unit. Check breakers. Turn on ac and see if outside unit is running. If you have float switch inside check the drain. But there is only so much you can do without knowledge of ac. You may need to call a service tech but ask for free estimate.Russ

Posted on Jul 31, 2009

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I have a Braeburn 3200 and when the the temperature reaches the desired heat setting. The furnaces heat will shut off, but the fan will continue to run indefinetly. eventually blowing very cold air up


The fan relay is stuck in the on position. When the temperature drops the heater does not ignite because the fan is already running and ignition is locked out after the heat cycle starts an the fan turns on

Nov 16, 2014 | Heating & Cooling

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We have a new a/c and the system has heat strips. For a/c. we have had the thermostat set on AC at 72degrees. Now that it is getting colder and may need some heat in the house, do we switch the...


If your thermostat has an emergency heat setting this means you have a heat pump system.
Yes you need to set the thermostat to heat for heating the house.
The emergency heat setting should never be used unless your outside unit is not functioning.
The emergency heat setting overides the heat pump (the outside unit will not be energized).
The emergency heat setting will run the auxillary heat (heat strips) only.
When the thermostat is set in the heat position the heat pump will run to heat your house.
If the heat pump can't keep up (extreme cold) then then the auxillary heat will kick in to augment the heat pump until it satisfies the thermostat settings. If your room temperature gets 2 degrees below your thermostat setpoint, your auxillary heat will kick on. Example, say you are going to be gone a couple of days and you turn your heat down to 60 degrees. When you return and it is 60 degrees in your house, you turn the thermostat up to 70 degrees. Since you are turning the temperature up 2 degrees or more (10 degrees in this case) from the 60 degree room temperature then the heat pump will come on and the auxillary heat strips. The unit will continue heating like this until the temperature in the house gets to 69 degrees and the heat strips will turn off and the heat pump will continue to run until the 70 degree setpoint is reached.
Hope this helps.
SeagullAC

Sep 15, 2011 | Heating & Cooling

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I have a Poulan 295. I needed to replace the chain. It is a 20" chain. There is bar oil in the resevoir. The chain will not stay on the bar (it seems loose even when fully tightened). I replaced...


If you replaced the bar AND the chain, you'll need to make sure the chain is the correct chain for the particular bar you've used. If you're only replacing the chain, you need to make sure the chain has the same # of drive links as your old chain (maybe one or two more, if you've had some removed because of chain stretch).

On that particular model, for a 20" chain, you could have a 78 OR 80 drive link chain (drive links being the part of the chain that rides in the groove of the bar). The correct drive link count is determined by the bar you've installed and should have been made clear by whoever you purchased the bar from. Some brands use an 80 drive link chain, but MOST use the 78 drive link chain.

If the bar you purchased uses the 78 drive link chain, but you have an 80 drive link chain, then no matter how far out you adjust the bar, you may not get the chain tight enough. PartsBuggy shows a listing of which bars use the 78 drive link chains here.

Aug 29, 2011 | Poulan Pro Chain Saw 46cc 20"

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I have an older Miller Furnace in a mobile home that I own. The unit was made around 1977-78. Think the model number is MGC-80-1. It does two things that seem odd. 1st is it will kick on like it should,...


sounds like the fan control is playing up try cleaning the back of it could have dust in it cleaning my help fan could be a loose spindal which the fan spins on see if this helps

Nov 06, 2010 | Heating & Cooling

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Its gets up to100 during the day here right now. my ac is set on 78 and comes on at noon and does not turn off till at least midnite. the temp on the thermostat stays at 80 untill after midnite. ...


Check the outdoor unit you should have hot air discharging out the top of the condensor. The insulated suction line should be sweating. The inside
coile should be condensating and water should be flowing to a drain from the indoor unit.

If all of that is happening, then I would say you now
have a ubdersized unit. If none of that is happening
then I would say you are low on refrigerant.

Jun 24, 2010 | Goodman CLJ30AR32 Air Conditioner

2 Answers

AC Thermostat is set to 78 but wont cool past 79 or 80


If your unit is running 24/7 you are either low on charge or the unit is to small for your house.
A 20° temperature difference is about normal for the room air vs the air coming out of the ducts, but the room air and the leaving air should keep getting colder and colder.
An air conditioner should cycle approximately 3 maybe 4 times in an hour if it's properly sized.
As for the thermostat thermometer they are very cheap and are more for reference than actual temperature, so if 78° is not comfortable, then you should set it lower but not rely on thermostat being accurate or what the thermometer is saying as long as it is consistent.
The air conditioner and thermostat can also be set below 78°, there's a lot of people set them at 72° and below with no problems.
the only thing is if you have real low humidity you'll need to watch indoor coil or the suction line (the big line) on your outdoor unit and make sure it doesn't freeze up on you.

Sep 13, 2009 | Honeywell CT87B ROUND HEATING&COOLING...

1 Answer

Can not get temp below 77


Is the thermostat set up for automatic change over from heat to cool? If so, the heat is probably set for 75, you will need to lower the heat setting in order to Lower the cooling. the stat won't let these settings with in 2 degrees of each other so the heating and cooling don't fight each other.

Aug 25, 2009 | Heating & Cooling

1 Answer

What tempratues should be set on a honywell 4 cycle thermost during the summer months


As a general rule set your t.sat 20 degrees below outside temp. Leave at this setting 30-45 minutes. Move down until comfortable no lower than 10 degrees below outside for 30-45 minutes. Unit should cycle normally. If it runs continuously then raise the t.stat 3 or 4 degrees up. The national average is 75-78. I usually keep mine set at 80 during the day here in Georgia and 74-78 at night...

Jul 03, 2008 | Honeywell Heating & Cooling

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