Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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After RTH6400 installation heat strip is no longer actuated

I ahave an American Standard airconditioner-heat pump unit that has a heatstrip within the inside exchanger unit Prior to installing the programable thermostat the heat strip would engage to bring temp up quickly. Now, the heat strip does not come on at all. The manual does not seem to address a unit with both a heat strip and a heat pump. How can I get our heating/cooling system to work as it used to?

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Http://yourhome.honeywell.com/Consumer/Cultures/en-US/Products/Thermostats/Do-It-Yourself/Programmable/5-1-1/Default.htm look at the very last part of thius page and you will see that the particular thermostat does not work for heat pumps tha have auxillary heat. Sorry for being the bearer of bad news but you need to upgrade the selection to make it work right.

Posted on Jan 25, 2009

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Can a honeywell programmable thermostat #RTHL2410C be programmed for heating and air system with heat pump and heat strips


Heat Pump, yes. Heat strips, no. A heat pump system that uses electric back up heat needs at least a 2 heat/1cool thermostat. It will have the options you need for your system. Unfortunately, your Honeywell will not work. Sorry, hope this helps!

Nov 18, 2012 | Heating & Cooling

Tip

Thermostat Wiring and Terminal Designations


Here is a list of each common terminal and what their commonly used for. Also listed is what colors are commonly used. NEVER ASSUME these are what you have. Verify all your wires by following each to each piece of equipment. This will help you to be able to match your equipment with the terminal.

- R, Rc, Rh Red wire, hot side of transformer
- C various color wires Usually the common side of transformer
- Y Yellow wire, Energizes the compressor, cooling or heating and cooling for heat pumps
- W White wire, heating for most units
- G Green wire, energizes the fan or blower relay.
- O Orange wire, energizes cooling on most heat pump units
- B Blue and sometimes Orange wire, energizes heat on most heat pump units
- B or X Blue, Black, or Brown wire, the common side of the transformer when the t-stat needs a common. Some brands use B as the common (York, GE, and Trane)
- E Pink, Gray or Tan wires, Emergency heat relay on heat pumps with auxiliary heat
- T Tan or Gray wires, For units with outdoor anticipator reset control (Trane, American Standard, GE, and Carrier)
- W2 Pink, or Brown wires energizes second stage heating on 2 stage units
- Y2 Blue or Pink wires, energizes second stage cooling on 2 stage units
- L Can be most any color, energizes service indicator lamp on units that are equipped with that.

The wires that always cause the most confusion are the B and X wires.
Check out the B terminal first. The NEMA standard for the B terminal to be the heating changeover valve but with some units it is different.

Trane, GE, York and some other manufactures which includes older Honeywell thermostats often use it for the common side of the transformer.
“X” Usually is the standard for common, but just like “B” some manufactures do use “X” or “X2” as the terminal for the emergency heat relay.

on Dec 12, 2009 | Heating & Cooling

1 Answer

I'm installing a Honeywell Thermostat RTH2410. In Step 1 you need to identify the system type. I have a Carrier Heat Pump model FA4BNF030. Is this a heat pump with or without auxiliary/backup heat?


Auxiliary heat is electric heat that is put into the air handler on the inside of the house. Its used when your heat pump doesn't provide enough heat, but heat strips are not always used. To see if you have auxiliary heat, look inside and see if you have breakers on the front panel of the air handler or anywhere close. No breakers, no electric heat. Hope this helps!

Dec 11, 2010 | Honeywell Electronic Programmable...

1 Answer

I have a Trane Heat pump and when temperature gets to around 28degrees F my unit just runs for hours with out cutting off. The temp. I'm trying to maintain is a 69 degree F.


A heat pump starts having trouble somewhere in the low 30' F range. That is why you have or should have auxillary heat. This could be electric heat strips, gas or oil heat, etc. If the auxillary heat is not working then the heat pump will run for a long time if not continuously. I guessing that you are having a hard time trying to maintain 69'F. If you have electric backup then the strips could be burned out. Hope this helps.

Feb 12, 2010 | Heating & Cooling

2 Answers

MY HEATER BLOWS HOT AIR THEN BLOWS COLD THEN HOT THEN COLD,ICHANGED THE MOTHER BOARD, RELAY SWITCH, AND THERMOSTAT, IT IS RUN FROM A HEAT PUMP WITCH I HAD CHECKED AND IT WORKS FINE


I have a lux electric thermostat my furnace will blow out heat for about one hour to maybe three then it will start blowing cooler air,I then cut it off for thirty seconds or longer once I do that it will start blowing out heat again then it will repeat it self again what could be the problem.

Jan 07, 2010 | Heating & Cooling

1 Answer

WHY DOES MY RHEEM RBHC-14J11SFD BLOW ONLY COLD AIR? THE AIRCONDITIONER WORKS, HOWEVER THE HEAT DOES NOT TURN ON. THE THERMOSTAT IS SET TO ON AND TO THE HEAT POSITION.


Heat pumps tend to blow a much lower temperature outlet air than a gas fired unit would. Is this your first year with this furnace?  Depending on your outside temps, an auxiliary heat strip may not be operating properly. 

Jan 05, 2010 | Heating & Cooling

1 Answer

I am tying to install an RTH6400 5 in 1 thermostat but the colors of wires i have on my wall are RED, GREEN, BLUE AND BLACK, where as the book has RED , YELLOW,WHITE AND BLUE. please which do i connect to...


You need to open up the panel at your furnace(air handler) and find the terminal strip and see what your existing thermostat wires are connected to. Normally your red wire connects to the R terminal(24 volts), the yellow wire to the Y1 terminal(cooling), the white wire to the W1 terminal(heating), the green wire to the G terminal(indoor fan). You can use whatever color of wire you have existing, just make sure that the R,W1,Y1,and G wires at the furnace match the R,W1,Y1, and G terminal screws at the thermostat. Also make sure the power to the furnace(air handler) is turned off before you make any wiring connections at the thermostat or furnace.This is very important! If you don't and you short any wires to ground(especially the R wire) you will possibly ruin the system step down transformer or blow the low voltage fuse.

Nov 10, 2009 | Honeywell Electronic Programmable...

2 Answers

Programmable T stat


your trane heat pump energizes the reversing valve with O - orange y - is to turn on the unit make sure you have your orange wire hooked up and the tstat programming set to heatpump otherwise your reversing valve might be bad

Jun 30, 2009 | Honeywell Electronic Programmable...

11 Answers

Foodsaver compact vac 550 sealing strip doesn't seal


My machine stopped working because the sealing ribbon was broken and the tape was worn. FoodSaver no longer does repairs. I knew the wire was called nichcome ribbon so I searched that. I checked the resistance of the ribbon on my machine, it was about 3.8 ohms. I found a site called mpakonline.com and from their site I bought 1/16 x .005 nichrome ribbon and 3/8 x 5 MIL. x 18 YD Acrylic Teflon Tape. The total cost of these items was about $36.00, the ohm value of their ribbon was 1.66 somewhat less.I used ends from radio shack made the repair and it has been working fine for the last two months and I have enough material leftover for about ten more repairs.

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