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Where do the five wires and jumper connect on my CamStat blower control. Older Rheem furnace.

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Should be a wiring diagram inside the unit door or on outside. don-ohio

Posted on Dec 24, 2016

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The temp. control contact switches are burnt on an older RUUD furnace mod. # LR-125JD. need to find the part.


I'm not sure what unit you have. Worked on many Rheen/Ruud units. When a blower control gives up, I wire in a 90-340 relay. Single pole double throw if I'm can recall correctly. Most HVAC parts houses are wholesale only, but money talks! You will need to know how to wire it though. Not hard if you understand electricity. You probably won't find an exact replacement for an older unit. If it's newer, find a rheem dealer. Hope this helps!

Mar 15, 2017 | Ruud Heating & Cooling

1 Answer

How do you you connect the theromostat wires to the board and how do I get the furnace to come on the blower will but not the furnace


Wiring to tstat and board. Without knowing unit or tstat most common is red-r, white-w1, yellow-y1, green-g, and blue or black-c. This is if you dont have a heat pump. Putting a jumper wire on r and w1 should bring on heat. Jumper on r and g should bring on blower. Jumper on r, g and w1 will bring on heat and blower

Feb 07, 2015 | Heating & Cooling

1 Answer

Rheem furnace ,2nd green light blinks 5 times then pauses. I have only 1 furnace,not a twin


5 flashes is a "neutral polarity failure".
on the motor:
White is the neutral and must be plugged in to one of the 3 neutral slots on the control board (usually on the left side of the board)
The other 4 wires (black, red, yellow, brown) are power to the motor and should be connected to the appropriate pins on the control board.
ref: http://www.rheem.com/docs/FetchDocument.aspx?ID=d0613a32-db55-4e32-abfd-04e89e72f7a6

Sep 13, 2014 | Heating & Cooling

1 Answer

Need to wire furnace blower


Gas valve should only have a couple of wires...24 Volt & common. the blower will use one speed on a gas furnace & a common. If you have AC or a fan switch on your thermostat, then the high speed will also be connected on the blower.

Dec 16, 2013 | Ruud Rheem Furnace Blower Motor...

1 Answer

Wiring a generalaire 1042 humidifier to a goodman furnace,when there are no terminals marked hum


24 VAC HUM
The yellow wire connected to the I.D. Blower pressure switch
is powered anytime the pressure switch is closed and provides
24 VAC humidifier control. Remove the yellow wire and connect
the supplied brown jumper wire to the pressure switch
terminal. Reconnect the yellow wire to the "piggyback" terminal
on the brown jumper and then connect the 24 VAC line of the
humidifier to the stripped end of the brown wire. Using a wire
nut or a field-supplied quick connect terminal can make this
connection. The wiring must conform to all local and national
codes. Connect the COM side of the humidifier to the B/C
terminal on the furnace control board (or to the COM side of
the 24 VAC transformer). DO NOT CONNECT 115V HUMIDIFIER
TO THESE TERMINALS.

Feb 21, 2011 | Humidifiers

1 Answer

How to set a NOMA HTM311A thermostat


Go to the furnace, and see what the black is connected to. If it is not the Y terminal, disconnect it from the Y terminal at the thermostat. While you have the furnace open, check for a blown fuse inline to the transformer or on the control board. If the black was connected to the common or the transformer, and you connected it to the Y, and turned the thermostat to cool, you would have a direct short across the transformer output. You can use a black wire to control the A/C, but both ends need to be connected to a Y terminal.

If you still remember the where the 4 wires were connected to the White Roger thermostat, take note of the name of the terminals the 4 wires are connected to. That may help as sometime the colour of the wires are not always correct.

Or you really want to test it out:
connect RED wire to GREEN wire should turn on the fan
connect RED wire to WHITE wire should turn on the heat


Did you disconnect the power at the furnace first? Maybe you blew a low voltage fuse.

Make sure you increase the heat setting to go above the room temperature.
Thermostat wire color codes explained.
Please note. Not all installers use the proper color codes when they install or replace equipment. It may be necessary go go to the furnace or outdoor unit to verify what wires are for what purpose. Also be sure there are no splices in the wire that could change the wire colors between components.

R (red) or Rh (Red heat) 24 volts from equipment.
Rc (Red cooling) 24 volts from transformer in cooling equipment.
Note: If only furnace has a transformer and cooling equipment does not jumper Rc and Rh.
W (White) sends 24 volts to furnace control to start the heating cycle.
W2 (no standardized wire color, usually whatever wire color is available) controls second stage heat.
Note: W2 is most often used for heat pumps to control what is called emegency heat or Auxillary heat, and most often will use the white wire.
Y (yellow) often (blue) is used, controls cooling unit (outdoor condensing unit) also is used for heat pump heat.
Y2 (no standardized wire color, usually whatever wire color is available) controls second stage cooling.
G (Green) controls the fan "on" operation of the furnace/air handler. Also often is used to start the blower for many electric furnaces.
C (common) most often brown but can also be black or other color available to installer.
O (orange) Energizes heat pump reversing valve for cooling (Trane and most other brands).
B (Blue) Energizes heat pump reversing valve for heating (Rheem, Ruud and Weatherking).


Hope it helps.


Thanks for using fixya.....

Nov 29, 2010 | Heating & Cooling

1 Answer

Rheem Criterion II - blower works OK w heat or AC, not by itself


does the blower do anything? turn the power off and take the lead that comes off of the "cool" ( wire from the blower motor) and hook it up to the outlet side of the door switch ( the wire that comes off the door switch and goes to the board) turn the power back on and push the door switch in this will allow 110v to the blower if the blower runs the blower is good

reatach all door switch wire and blower wire to "cool"

disconnect all low voltage terminal wires at control board from thermostat make a jumper with a seperate wire from R to G if it runs it is your Thermostat or the wires inbetween the two

if it doesnt you probably have a burnt solder spot on the back of the control board and will need to replace the board

hope this helps

Jul 12, 2009 | Heating & Cooling

1 Answer

I need help with my central heat and air unit, it has a heat pump. the model number is GQ3RA-036K. I am changing the theromstat out and the wires are connected to it. there are eight wire colors that are...


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Please note. Not all installers use the proper color codes when they install or replace equipment. It may be necessary go go to the furnace or outdoor unit to verify what wires are for what purpose. Also be sure there are no splices in the wire that could change the wire colors between components.
  • R (red) or Rh (Red heat) 24 volts from equipment.
  • Rc (Red cooling) 24 volts from transformer in cooling equipment.
Note: If only furnace has a transformer and cooling equipment does not jumper Rc and Rh.
  • W (White) sends 24 volts to furnace control to start the heating cycle.
  • W2 (no standardized wire color, usually whatever wire color is available) controls second stage heat.
Note: W2 is most often used for heat pumps to control what is called emegency heat or Auxillary heat, and most often will use the white wire.
  • Y (yellow) often (blue) is used, controls cooling unit (outdoor condensing unit) also is used for heat pump heat.
  • Y2 (no standardized wire color, usually whatever wire color is available) controls second stage cooling.
  • G (Green) controls the fan "on" operation of the furnace/air handler. Also often is used to start the blower for many electric furnaces.
  • C (common) most often brown but can also be black or other color available to installer.
  • O (orange) Energizes heat pump reversing valve for cooling (Trane and most other brands).
  • B (Blue) Energizes heat pump reversing valve for heating (Rheem, Ruud and Weatherking).

May 07, 2009 | Heating & Cooling

1 Answer

Replacing an older Rheem Ht/Pump w/a new Goodman Ht/Pump


The installation instructions should explain connecting 4 control wires to a 5 wire thermostat. Absent the instructions, check to see if any of the terminals on the new thermostat have jumper wires run between them -- if this is the case the two terminals w/ jumpers will only require one wire, and it doesn't matter which terminal is connected -- just match colors.

Apr 28, 2009 | Heating & Cooling

1 Answer

I have a Rheem (Criterion) unit and i'am having promblems with the main burner staying on. When i turn the unit on everything operates like it should up to the main burner staying on.Once the main flame...


Run a wire from the sensor down to the control board conector. Bypass the sensor wire around the connector in the blower deck.
The connection can be wire nutted on the sensor lead with the wire (16 or 18 guage stranded wire works) routed through the blower deck to the other side of the plastic wire connector on the blower deck.
The Sensor operates at high voltage but very low current. The connector will sometimes fail due to humidity or wear.
I have seen this on the Rheem or Ruud furnaces.
Hope this helps.
Matt

Jan 07, 2009 | Heating & Cooling

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