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The thermostat (RobertShaw 9500) is cooling and working properly to the correct temperature. The problem is the correct temperature is not being shown on the thermostat. The thermostat is not in the heat or sunlight.

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SOURCE: The Honeywell Programmable Heat Pump

if your problem has existed since the begining of installment it could be a return/ thermostat placement problem. if the return is to close to any supply vents it will run like that and your thhermostat will read like that

Posted on Apr 25, 2008

  • 958 Answers

SOURCE: RobertShaw Thermostat 9600 problem

verify if you have separate units for each floor.

the ones working could be a complete separate unit from the one having problem.

look at the condensing units you got outside , how many are there?
if you have 3 units outside and you have 3 thermostats, then each thermostat is controlling individual split units.

we have to concentrate on the one that is not cooling. give me the details on what is going on with problematic one.

is the outside unit running?
is the outside fan running?
can you distinguished if the compressor is running the same time as the fan?

tnx 4 using fixya,

drcool

Posted on Sep 14, 2008

  • 45 Answers

SOURCE: Robertshaw 9420 thermostat engages inside fan in OFF position

check with the company u brought it from and check if you have not put the correct conector to the right temals on the back of the switch.

Posted on Jun 09, 2009

  • 74 Answers

SOURCE: Heat comes on when the temperature setting calls for cool.

getting heat in the cooling mode leans toward the reversing valve in the outside unit. it changes the flow of refergerint so that the hot air you get outside in the summer is blown inside in the winter. another possibility is that the reversing valve isn't getting 24v check to see if you have 24v at O and C either at the t-stat, furnace, or the outside unit. if you check at the furnace rember the safty switch for the lower door if that switch is open you will have no power. i would look at the t stat first if you have 24v there go to the outside . 24v present outside will mean a bad valve or board, no 24v means a bad or broken conection in the control wire between the stat and the outside unit(usally the orange wire)

Posted on Jul 11, 2010

  • 24 Answers

SOURCE: The thermostat will not cool

Your thermostat is probaly not the problem. Is the outdoor unit running?

Posted on Oct 07, 2010

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My robertshaw 9620 thermostat is stuck on 70 and i can not change setting frim temp or time.


Here's how I fixed my Robertshaw thermostat that was stuck at a 70 degree reading for almost 2 monthes. When I turned on the air conditioner or heater it wouldn't stay on. I removed the cover panel and dusted off the inside which the guy at local hardware store suggested. That didn't work. Then I noticed the words "reset" right on the green circuit board on the left side. There's a very small silver button. I pressed on it and everything reset. Less than a minute later the thermostat is reading the correct room temperature. Now my air conditioner and heater are working properly.

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1 Answer

Robertshaw 9420 thermostat engages inside fan in OFF position


check with the company u brought it from and check if you have not put the correct conector to the right temals on the back of the switch.

Jun 09, 2009 | Heating & Cooling

1 Answer

Thermostat problems


Have you confirmed that the thermostat is programmed correctly?

Did the thermostat ever control the temperature of the house properly?

When you indicate "kick", are you talking about flipping the Auto-On switch back and forth? The Auto-On switch only controls the fan, and no heating or cooling (Auto - fan runs on call for heat or cool, On- fan runs all the time.).

If "kick" means making the heating work, and if you have the same problem for making the cooling work, chances are good you have bad thermostat.

If the problem only occurs with the heating, and cooling works fine, then the problem could be in the controller board of the furnace, assuming you have a more recent (1990's or newer) furnace.

Jan 16, 2009 | Heating & Cooling

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