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Replacing a Simple Comfort 2200 with a Honeywell RTHL3550. All wire terminal points on 2200 match up with new ones on Honeywell, except that on the Simple Comfort there is a "C" terminal but not on th

Heat pump system with aux electric strip heaters.

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: electric heat strip installation and wiring

Need to make sure your wire size to the inside unit is large enough to handle the amperage, that you have a two stage heat thermostat.

Posted on Jan 04, 2008

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machtcl1
  • 61 Answers

SOURCE: Thermostat Wiring: W2? E? Where to connect?

You have a heat pump. You need a thermostat for "Heat pump with Electric back-up heat". Make sure the 'stat has either an "aux" (auxilliary heat) or an "E"(Emergency heat) terminal. The wiring instructions will be provided with the thermostat.

Posted on Dec 16, 2008

pierre1811
  • 144 Answers

SOURCE: replacing thermostat: tstatccshp01 with th8320u1008

Hook up o to o/b, then in the installation programming set the change over valve to energize in cool. Then hook up w to aux. Good luck.

Posted on Jan 21, 2009

protek480
  • 1723 Answers

SOURCE: Switching thermostats

The two wires are the control circuit from the heater your running. They go to the thermostat and close when it get below the thermo. setting and start the heater.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Posted on Jul 01, 2009

  • 588 Answers

SOURCE: Wiring instructions for Thermostat Honeywell with Carrier Package

Jumper R to Rc and hook hot wire from transformer to R usually red wire
O = Reversing valve probably white or orange If you get heat when calling for cool or Vice Versa then switch wire from O to the B terminal.
Y = Contactor usually yellow
G = Blower usally green
Jumper Aux to E need to go to unit and use the wire that goes to your Auxiliary or 2nd stage heat
L = Light if you have this terminal on your unit then hook it up.
C = Common from transformer usually black, if you have this terminal on your unit hook this wire up.
Make sure you go to your unit and only hook these wires up if they go to these locations.

Posted on Jan 11, 2010

Testimonial: "everything is working like a charm now. Initially it was not running but after 5 minutes or so the Fan came up and it is working fine. Thanks"

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1 Answer

My simple comfort 2200 thermostat has a brown wire hooked to the e terminal. what is the e terminal for?


Likely for emergency heat. When the heat pump is in defrost mode, due to extremely low ambient temps, e is your indoor heat strips.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Jul 02, 2017 | Heating & Cooling

1 Answer

Simple comfort 2200 ~ what is the E terminal for? the brown wire is hooked to E terminal


E is for emergency heat which locks out the outdoor heat pump and brings on auxiliary heat when the t'stat is switched to "emergency" . This circuit will also be energized when the outdoor unit goes into defrost.

Jul 02, 2017 | Heating & Cooling

1 Answer

Honeywell how to install


Did you try E too aux and x1 to c?

Jul 20, 2014 | Honeywell RTH6580WF Wi-Fi Thermostat

1 Answer

Heat/Cool does not respond after replacing Trane Weathertron BAYSTAT239 with Honeywell RTHL3550


Sounds like you didn't turn the power off and blew the low voltage fuse. Typically a 5 amp blade style (like a car) inside furnace. TURN THE POWER OFF!!

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Jul 13, 2017 | Heating & Cooling

1 Answer

I am replacing an T8411R with RTHL3550 and I have the following wires. Original vs New G=G,R=R,Y=Y,O=O......? I have a W2 and an E wire that go into different screws on original but no seperate terminal...


C is actually a power wire; it provides power for some programmable thermostats. You don't have to connect it on the new thermostat; cover the end with electrical tape to avoid it causing a short. (If you keep that wire accessible, it will be nice for someone who wants to use another programmable thermostat. The ones which can talk to wireless networks require this wire.)

Do you have a heat pump? That is the only time a thermostat uses an E wire.

The W2 wire should go to AUX (third screw terminal from the left) and the E wire should go to E (second screw terminal from the left). See page 25 (27 on the pdf) of the Quick Installation manual for the RTHL3550. This manual is available from Honeywell at http://yourhome.honeywell.com/home/Products/Thermostats/Digital-Non-Programmable/RTHL3550D.htm .

I hope this helps.

Cindy Wells

Nov 03, 2013 | Heating & Cooling

1 Answer

Simple comfort 2200 thermostat not working properly


We have a Simple Comfort 2200 Electronic Thermostat and last night it quit blowing cool air and the # sign beside the air temp (the set to temp) starting blinking

Aug 11, 2012 | Heating & Cooling

1 Answer

I have an intermatic C8865 timer. i want to wire it into an EFM model AF150-1 coal stoker furnace, because the fire goes down to far inbetween actual times heat is called for. also have main switch for...


Intermatic C8865 timer is a 5-hour cycle timer that repeats same cycle each 5 hour period.
This timer has 120Volt clock motor and is 120V timer.
Timer has NO and NC terminals.
NO terminal turns ON when timer turns ON
NC terminals is ON all the time, except when timer turns ON. At this point NC terminal turns OFF.

You have 3 things: 120V timer, 120V honeywell transformer, 120V stoker motor/fan
The transformer needs to be ON at all times.
The stoker motor is going to turn ON when the cycle timer turns ON.

You have 120V cable with black wire, white wire (and bare ground, which connects to green ground screw and to other bare grounds and won't be discussed further)

Black wire is hot
White wire is neutral

Black wire connects to 'Switch common terminal' on timer.
Same wire also connects to black wire on Honeywell transformer.

White wire connects to 'Clock terminal' on timer
Same wire connects to white wire on Honeywell transformer and to white wire on Stoker motor.
So all the white wires are connected together.

Last wire is black wire to stoker motor.
This wire connects to NO terminals on timer.

Here is drawing.
Add a comment any time
geno_3245_182.jpg

Dec 13, 2010 | Intermatic C8865 Timer, 1HR CYCLE TIME, 30...

1 Answer

Switching thermostats


The two wires are the control circuit from the heater your running. They go to the thermostat and close when it get below the thermo. setting and start the heater.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Jun 28, 2009 | Honeywell Electronic Programmable...

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