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

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What is A2 and A3 terminals on athermostat - Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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That is for a load like lighting that can be brought on by the thermostat

Posted on Dec 31, 2008

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I've got 15psi at the regulator but my flame isn't as blue as it was in the past. Last yr. It's orange at top and flickers alot. Its a3 burner with a thermostat. Sometimes only 2 lite and the 3rd blows...


The first thing I'd check is for a restriction in the combustion air. Sometimes birds and bees make nests there.
Second is check orifice for soot or carbon build up.
If I had make and model of furnace I could get more info.

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Wiring with only 2 wires; which terminals to connect?


See RC and RH, RC is for cool, RH is for heat, you wire the red wire to the RH or red terminal ,either one will work actually but we generally switch the hot leg of power, W is the heat circuit


wiring-only-2-wires-terminals-connect-cp4yufdp500qfugpjpa1ch44-2-0.jpg

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How do I wire blower moter


Black- high speed Red- low speed Blue- med. high Yellow- med. low White- neutral Usually black on "cool" terminal on board, red on "heat" terminal on board, and remaining 2 on the "park" terminals on board. White goes to the neutral terminals. Hope this helps!

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I wont to replace my old robert shaw 9400 thermostat with a new honeywell rth111b thermostat but dont known the color wireing diagram


Hello, if this is a standard straghtcool/heat unit then Red- R terminal or Rh white- W terminal Yellow - Y terminal Green- G terminal Blue- Common terminal ( not always used) but ifyou do have a blue wire it will connect to this terminal.

Nov 19, 2011 | Heating & Cooling

1 Answer

What wires go to what terminals on my honeywell peaksaver thermostat?


the red wire goes to the terminal thats power, green wire goes to g terminal for fan, blue is common goes to the b terminal,yellow is cooling the y terminal,and white is heat the w terminal.

Feb 06, 2010 | Honeywell Electronic Programmable...

2 Answers

Lakewood heater 7101 schematic


The power cord goes the switch terminal 1 and 3.
Terminal 2 must be the opposite of terminal 1, such that when switched on, 1 & 2 connects. Terminal 4 must be the opposite of terminal 3, such that 3 & 4 connects.
Under this setup, you may connect red to terminal 2
and black to terminal 4.
Be sure of the 1 & 2 pair, as well as the 3 & 4 pair.
then, connect the red and black wires.
Hope this will help you.



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1 Answer

Need help with the wiring on the reddy heater 110 btu


CIRCUIT CARD-
-Photocell blue wired go to two terminals marked BLUE PHOTOCELL (any order)
-Motor red wire plugs onto terminal marked MTR MAIN, motor white wire plugs into terminal marked WHITE MOTOR.
-potentiometer (thing with knob) two white wires plug into terminals marked TEMP SEL
-Black wire from switch to terminal marked L1 BLACK
-White wire from power cord goes to terminal marked N White
-Ignitor (used to be yellow wires) goto terminals marked IGNITOR and IGNITOR RET (any order)

OTHER-
-White wire from power cord goes to switch terminal marked 3A , other pigtail of the white wire goes to board as described above.
-Black wire from power cord goes to swtich terminal marked 4B

Nov 14, 2009 | Reddy Heater-170,000 BTU Kerosene Deluxe

1 Answer

I removed the wires from the old thermostat before I realized that I needed to label them so that they could be placed in the proper place on the new thermostat.


Heating, red wire to R terminal and white wire to W terminal. Fan, green wire to G terminal. A/C, yellow wire to Y terminal, there may be a jumper from R1 to R2 terminals. If you have a blue wire it should go to C terminal.

Oct 18, 2009 | Honeywell Electronic Programmable...

1 Answer

I have installed a Honeywell CT8775C, when I put it on the heat the A/C goes on!! I have checked my wiring and everything looks right? what should I do to correct it.


You should have a minimum of four thermostet wires. The red wire goes on the R terminal. White wire on the W terminal. Green wire on the G terminal. Place the yellow wire on the Y terminal. In most cases NO other terminals are used...... IF YOU DO NOT HAVE A YELLOW WIRE...... place the blue wire on the Y terminal. This should hopefully fix it. IF NOT....See if the thermostat has a RH and a RC terminal. If so I'll bet that you put the red wire on RC ternimal. this is for airconditioning ONLY. The RH terminal is for heating ONLY. Put a small jumper wire that will connect RH & RC. Then this should solve your problem.

Mar 03, 2009 | Honeywell CT87B ROUND HEATING&COOLING...

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