Question about Heating & Cooling
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Posted on Jan 02, 2017
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
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,
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.
Posted on Jun 29, 2009
Usually when the furnace blower motor runs all the time
The limit switch or rollout switch is usually open or bad.
The furnace board is seeing that one of those switches is open, so it brings the blower on to try to get the heat out of the combustion chamber area, so the switch will close. But if the switch is bad and won’t close, the furnace board will keep the blower running continuously.
Posted on Jun 01, 2010
Testimonial: "Thank You blvl777! This does make sense and gives me a good direction to go in. I'll see if the manufacturer has a replacement part. If not then I'll apparently need to purchase another thermostat. You've been a Great Help blvl777 and Thanks Again! "
Take your control apart to expose the buttons. The buttons are secured by small clips that can be removed by usimng a cross tipped screwdriver. When removing the buttons be care not to lose the small springs under the buttons. Once removed spray the contacts with contact cleaner and reinstall everything. I had the same problem and after performing this procedure the unit worked much better. Hope this helps.
Posted on Jul 30, 2013
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