My fan is not shutting off when the central air (White-Rodgers) is turned off and the fan set on auto. I removed the green wire for the g terminal on the thermosat and then reconnected it, but the fan is still running. I also replaced the batteries in the thermostat unit

Good luck, Gary

The Yellow wire is for cooling, the white is for heating, the red is for power, the green is for blower fan, the blue is your common wire, all you should have to do is color code the wires to the thermostat. The thermostat should have the colors labeled R,W1,G,Y,B or C for common if it's wired correctly at the Air Handler or evaporator. The blue wire should go to B, or C.

You can find out by taking the green wire loose off of the "g" terminal on your thermostat. If you take the wire loose and the fan shuts off, it is something in the thermostat. If you take the wire loose and the fan keeps going, it is in the furnace. Also, make sure you have the fan switch on the thermostat on "auto" and not on "on".

Hi, the wiring terminations are near consistent with a 24 volt ac furnace and I will tell you how a 24 volt stat is terminated. RC= 24 volts jumped to RH for red wire only. This would be for a central system with air and heat. W=white for heat, G= Green for Fan, and Y = yellow for cooling. I do believe it is wired correctly for your application. Please verify your units model and serial number and give me a clue as to what is taking place, and did you change the thermostat or make a part change?
Sincerely,
Shastalaker7
A/C, & Heating Contractor.

If you open the bottom swing door you will see a switch on the left that says Fan On/Auto. Make sure it is in the Auto position and the fan should cycle on and off with the equipment.

Tim Burke, White Rodgers Employee
Email me with further questions at [email protected]

Y or yellow and G or green are connected in the "auto" setting, as G is fan and Y is cool, the Y and G wires are somehow, energizing the Y wire that goes to the AC unit to run cool, take thermostat off exposing the thermostats sub base Y and G will be there along with R, red, 24volt ("hot leg" of 24 v power) W white= heat, and C common, 24 volt ("neutral leg" or "common" leg of 24 power) common is where all the various 24 volt circuits (cool, heat, fan,) terminate or return to complete the circuit, just as a AA battery nas a positive and negative side of power, so does the furnace and all electrical circuits, its common as all circuits terminate there , its the opposite side of power fro whish all circuits begin, red is the :hot leg" and enters on RED red to WHITE=HEAT

RED to YELLOW=COOL
RED to GREEN= FAN

auto =Y & G connected
on= R & G connected

if you jump red to green, which is fan on, no connection should exist to yellow in on ! only auto!

If you do not see a RH/RC terminal then your red wire goes to terminal 4, do you have a heat pump system or a forced air furnace? If it is a forced air furnace green wire goes to the G terminal, yellow or blue wire goes to the Y terminal, the white wire should go to the W terminal and the red wire should go to the RH terminal, (leave jumper from RH to RC terminal.

The W- terminal is for the HEAT RELAY.
Connect the brown and white wire to the WB terminal which is heat relay of the Hunter thermostat.

a. Remove the cover of the thermostat.
b. Connect the RED wire from the air conditioner
to the “RC” terminal on the thermostat.
c. Connect the “YELLOW” wire from the air conditioner
to the “Y” terminal on the thermostat.
d. Connect the “BLUE” wire from the air conditioner
to the “H” terminal on the thermostat.
e. Connect the “ORANGE” wire from the air conditioner
to the “G” terminal on the thermostat.
f. Push the thermostat wires into hole in wall and
fill excess hole with insulation.
g. Mount thermostat base to the wall with screws
provided.
h. Check all thermostat wires on base to ensure
they are completely clear of the bimetal coil of
the thermostat. Adjust if necessary.
i. Replace thermostat cover.
If nothing operates on the air conditioner, remove the
return air grille assembly and verify the red, orange, yellow
and blue wires are properly connected (red-to-red,
orange-to-orange, etc.).
Next, disconnect the red wires and check for 12 volt
DC between the red wire from roof section and the orange
or blue wire from roof section. If no voltage received,
refer to Section F2. If voltage is received, the
problem lies with the thermostat or thermostat wires.
Next, disconnect all 4 wires (red, orange, yellow and
blue) from the thermostat. With the thermostat set on
COOL mode, FAN mode set on AUTO and HIGH, and
temperature selector set lower than the room temperature. Check for continuity between terminal RC (red wire)
and terminal G (orange wire); and RC (red wire) and
terminal H (blue wire). If continuity is achieved on each,
proceed with the next step.
Set fan switch to LOW. Continuity should NOT be present
between terminal RC and Terminal H, but present between
the other terminals (Y & G) and terminal RC.
If all of the previous checks are good, the thermostat is
good, do not replace it. If any one of the previous checks
are not correct, replace the thermostat.

What were each wire connected to on the white rodgers? The connectors on the white rodgers should have markings. Tell me this and I can tell you how to wire your new stat. This hunter will not work with multi stage heat pumps..so I need to know what was connected to what on the white rodgers to know what type of unit. Thanks Kevin