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Thermostat needs to be replaced in my small unit

Thermostat needs to be replaced in my small samsung window unit it does not cool the unit is only 2 years old, need help finding parts for this unit thank you

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  • tim_toolm419 May 19, 2009

    not sure will check into this solution

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Http://www.thestuccocompany.com/maintenance/Replacing-my-thermostat-for-AC-unit-90115-.htm

http://www.homedepot.com/cmc_upload/HDUS/EN_US/asset/images/eplus/084615000075_4.jpg
> > 7-Day Programmable Thermostat > > Model 300610 > > Price: $69.99/ea > >http://www.homedepot.com/cmc_upload/HDUS/EN_US/asset/images/eplus/775264141126_4.jpg
> > Any recommendations? > > Thanks, > > MC > >
I replaced mine a few months ago with:

Honeywell Programmable Thermostat ENERGY STAR®
Model: RTH6300B1056
http://www.lowes.com/lowes/lkn?action=productDetail&productId=39500-74493-RTH6300B1056&lpage=none

It's also 5+1+1 and another nifty feature is that it automatically adjusts
the start time. It cost $59 and right now Lowes has a rebate with it for a
$5 gift card. I've never had a problem with mine. I can't comment on the fan
control, however, since my AC is only wired with three wires and is missing
the fourth fan control wire.


get yourself a White_rodgers 90 series 5+1+1 from a local HVAC dealer.
Skip the home depot stuff as it cost almost as much.

the w-r has filter replacement timer, 5+1+1 day programmability,
seperate temperature settings for heat vs. a/c, and an auto setting to
decide which it needs when. vacation settings. Lockout. Also the fan
is programmable to some degree. During the summer my fan stays on while
I am home and I rarely need the a/c compressor to kick on (house gets
more humid this way though)

check them out at their website. im happy with mine. They also have
simple models.


4-wire typical wiring of a thermostat is: Y (Yellow) G (Green) W(white) and R (red). Inspect the thermostat to see if it has a jumperfrom R1 to R2. If not, put your red wire on R2. On a 5-wire thermostatyou may have a blue wire. This will go to the common terminal (usuallyC but sometimes B) check the inline fuse in the air handler to see ifit has blown. Replace it only after wiring the thermostat correctly.



if you have a newer t-stat your heat pump reversing valve is either o or b depending on the type of system you have



Posted on May 19, 2009

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Thermostats in cars are often neglected, if not totally forgotten, units. Yet they play an important role in the general performance of cars by restricting water flow until the engine has warmed-up. Thermostats are heat sensitive valves that open and close. On cars they prevent circulation of coolant to the radiator until the engine is warm enough. When the thermostat is closed water only flows through the water pump and water jacket to let the engine warm quickly. When the thermostat opens, water can then pass through the radiator for general cooling.
google_protectAndRun("ads_core.google_render_ad", google_handleError, google_render_ad); Having a car that warms quickly is particularly useful in cold weather when you want to use your car heater as soon as possible. The thermostat is in a small housing positioned where the top radiator hose connects to the engine. The best time to check or change a thermostat is when you are servicing your radiator because you need to drain the cooling system
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Next item: What is the exact model of the thermostat? It should consist of TH6###?#### where the "#" are numbers, and the "?" is a letter. And also you can check the following:

1. Remove the thermostat by gently pulling straight out from the wall to remove it from the sub base and tell me is you have 1 or 2 terminal blocks on the sub base. This will tell me if your thermostat is a 1 stage cool or 2 stage cool thermostat.

2. Check the air handler low voltace connections and check that the wiring is connected to both Y1 and Y2 and that these wires are connected to Y1 and Y2 at the condensing unit.

It may be the case of not connecting the condensing unit 2nd stage wiring, the thermostat is only 1 stage cool, or some similiar wiring mishap. Have seen it many times over the years. People get in a hurry and forget the small things. But if this was professionally installed, you paid a good price, if you find that the wiring is incorrect or the themostat is wrong, you should call your installing contractor and demand they return to correct this issue to maintain your factory warranty. If you have any addtional questions, or concerns or need help with any of the above, you can contact me again through here or via my company website at www.emshvac.com .

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you could pull the front cover off and see if there is a loose wire in the control box (behind where the control knobs are). it could just be a bad thermostat. you will see a copper wire with a silverish end on it coming out of the t-stat, try holding it between your fingers for a few minutes to warm it up, turn the t-stat to coldest setting possible, turn unit on, and then see if the compressor will kick on. if neither of those things help you could try replacing the thermostat, probably not expensive from samsung if the unit isn't too old. if that doesn't help either then the compressor probably bit the dust. but if not its worth fixing! hope that helps.

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Step 1:
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Step 2: 
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Step 3: 
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If you are not comfortable working around High Voltage, do not attempt to fix anything. At your own risk, there will be two small wires going to your outside unit and one set of larger wires. The larger set powers the unit with High Voltage. Leave them alone. The smaller wires carry Low Voltage and energize the control on the condenser. If your thermostat is not sending a signal, these two small wires will not have any voltage running thru them. Check for 24 volts when the thermostat is calling for Cool. For a quick test, jump out the terminals where the two wires connect and see if the outside unit starts. If not, you have issues that will require a technician. If it does start, check the wires for any breaks or bare spots and replace if you can. Check the thermostat and make sure it is in fact calling for Cool. Replace any batteries in it or jump out the same two wires at the thermostat and see if it starts. You may need to replace the thermostat if it does start.

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