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I have a heat pump controlled by T87 thermostat. Attached to the thermostat is a S.P. double throw switch that allows me to switch from the heat pump to an evaporative cooler.My question is can I keep the switching arrangement and install a 6300B progammable thermostat.

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If the new thermostat is heat pump compatable.

Posted on Jun 20, 2008

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My furnace wont turn on.changed batteries but still doesnt turn on! there doesnt seem to be "option" for "HEAT" on screen


If you have recently changed your thermostat to this one, It may not be compatible with your system. If you have a heat pump system, your thermostat will not work with a heat pump. You will have to install a thermostat that is compatible with a heat pump.
-Said that, assuming this has worked in the past during the heating season, some times the switch slides on these thermostats are fairly tempermental in that the switch slide contacts inside the control board sometimes do not make contact and if jostle around a bit, will maybe make contact. You can also remove the front plate from the base plate and check the wire are properly attached and not loose. While you have it off, check the hg he switch to make sure it is selected properly. If you have a gas or oil furnace it should be in hg. If you have electric heat it should be in he.
Depending on the age of the thermostat, you may need to get a new one because of the slides do wear out and tend to give unreliable performance. If you replace the thermostat, may I recommend you get a Honeywell built thermostat. Many of the cheap thermostats are cheap and poorly constructed and become unreliable. On cold days or hot days air conditioning is essential for comfort, and the money spent for a good thermostat is money well spent.
Hope this helps.

Dec 20, 2014 | Hunter Set and Save Programmable...

1 Answer

Bought new thermostat model ct87k but old Honeywell model I have was hook up by black and white wire not red and white , so how do I hook up.


The two wire Honeywell T87 and CT87 is nothing but a switch in a control circuit. Wire color is not important at all. What is important is the TERMINAL DESIGNATION those wires are hooked to. Soooo....take the wire off of the sub base of the old stat terminal marked 'R' and attach it to the new sub base terminal marked 'R' and so on. Wire COLOR means nothing at all in your case.

Oct 04, 2014 | Honeywell CT87K1004 Round Heat Only...

1 Answer

Why does the heat pump operate in heat when cooling is set at the thermostat


You could have a problem with your controller

You could have a Wiring Issue that is not allowing the switch

You could have a Valve Issue....

Apr 12, 2013 | Intertherm Heating & Cooling

1 Answer

Where is the reset button on an Amana ASZ14 unit?


I don't think the Amana ASZ14 Heat Pump has a reset switch, but you can still reset it by resetting the power (when it's not running... turn your thermostat OFF first).

To reset the power, locate your circuit breaker box. There should be a double-breaker for the Heat Pump and another double-breaker for the Air Handler. Turn them both off for at least 2-3 minutes. Then flip them back on and turn your thermostat back ON.

You're thermostat may also have a RESET button that you can push. I have to reset mine every time I change the batteries in it.

Here are some more repair tips...

Heat Pump Troubleshooting & Repair:
http://www.hometips.com/repair-fix/heat-pump.html
Heat Pump Troubleshooting Repair

Amana ASZ14 web page:
http://www.amana-hac.com/products/heat-pumps/14-seer-asz14
ASZ14 Heat Pumps

Amana ASZ 14 SEER Technical Manual
(45-page PDF):
http://www.manualslib.com/manual/877256/Amana-Asz-14-Seer.html
Amana ASZ 14 SEER Technical Manual

Amana ASZ (and ASX) Service Instructions (66-page PDF):
http://www.acdirect.com/media/catalog/files/RS6200006.PDF

Jan 11, 2011 | Amana PTH123B25AJ Heat Pump Air...

3 Answers

My new honeywell T87N/T87K round is not turning on my heater


check for voltage then check connections sometimes the wire breaks and no power gets to the stat

Jan 06, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

HEAT PUMP PROBLEMS


Defrost cycle is to allow frosy or ice to melt down and not restrict the output air. The thermostat is set too low and in high humidity ice forms quickly restricting the air flow. tur up the thermostat and let the room cool gradually.

May 26, 2009 | Heating & Cooling

1 Answer

Heat not blowing on heat cycle


Have to know what kind of heat it is, Gas, Electric or Electric Heat Pump.

Heat pumps, when air over air type, have an extra setting on the thermostat labeled Emergency Heat, Although these thermostats can work on the other types of heating as well.

Both modern Gas and electric furnaces have the blower controlled by a blower board. The flame and or heating elements can also be controlled by the same or a separate board. SO you could have a board problem, or a safety switch or other symptom causing a safety switch to trip off on you.

Consult with your diagram and find something you can recognize then trace the wires down and follow to where you get the power to turn on the heat (usually always R feeds thermostat and W feeds Heat). Colors of the attached wires means nothing at this point. Look for the terminal designations not colors.

Hope this helps you. Please grade me accordingly and GOOD LUCK. :)

Mar 03, 2009 | Ruud Central System Air Conditioner

1 Answer

What position does the small lever on the right side of the T87 Honeywell Round T-stat need to be in to be OFF ?


The switch on the right side of the T87 is for the fan. Down is the auto position which will cause the fan to run only when needed. Up is the always-on position, used to circulate the air constantly. If you want to shut down all heating cooling associated with this thermostat you need to look at the switch on the left side of the stat. To the right is heating, center is OFF, and left is ac.

Dec 14, 2008 | Heating & Cooling

1 Answer

I've replaced my very old (mercury) Honeywell thermostat with a new one (round, Model: YCT87K1011), but I can't get it to control the temperature. If I connect the two wires one way, the furnace comes on...


Hey John, man that ole T87 has been around for a hundred years and I have installed many of them, but I cant remember the letters on the wiring. Seems to me that it is R-W-Y, any way you will use the R and W. I have a t87 at home still in the box and I could wait till I got home to help you but Im sure its the R and W terminal. Dont forget to set the heat anticipator. Set it the same as the current value of your gas or oil valve.

Nov 06, 2008 | Honeywell Heating & Cooling

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