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Step 3: Testing the Thermostat
WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS
VALVE OR SYSTEM CONTROL TO TEST OPERATION. THIS WILL
DAMAGE THE THERMOSTAT AND VOID YOUR WARRANTY.
CAUTION: DO NOT SWITCH SYSTEM TO COOL OR LEAVE IN COOL MODE
IF THE TEMPERATURE IS BELOW 50°F (10°C). THIS CAN
DAMAGE THE AIR CONDITIONING SYSTEM AND CAUSE PER-
SONAL INJURY.
1. Place the EMER-HEAT-OFF-COOL switch into
the COOL position. The will be displayed.
2. Press the button until the temperature
setting is at least 3 degrees below the room temperature. The air
conditioning system should turn on within a
few seconds.
NOTE: ONCE THE THERMOSTAT TURNS OFF WHEN IN THE COOL MODE,
A BUILT IN 5-MINUTE DELAY PREVENTS THE SYSTEM FROM
TURNING ON AGAIN. THIS PROTECTS THE COMPRESSOR. NO
ADDITIONAL TIME DELAY RELAY IS REQUIRED. TO OVERRIDE THE
5-MINUTE DELAY FOR INSTALLATION, PRESS THE RESET BUTTON.
3. Put the EMER-HEAT-OFF-COOL switch into the
OFF position. The air conditioning system
should turn off.
4. Put the EMER-HEAT-OFF-COOL switch into the
HEAT position. The will be displayed.
5. Press the button until the temperature
setting is at least 3 degrees above room
temperature. The heating system should turn on. The fan may
not turn on immediately, depending on the fan delay built into
the furnace.
NOTE: If HP is selected, the heat will not come on until the 5 minute
short cycle protection has expired.
6. Put the EMER-HEAT-OFF-COOL switch into the
EMER position. The will be displayed.
7. Press the button until the temperature
setting is at least 3 degrees above room
temperature. The secondary heating system should turn on.
NOTE: The compressor will not turn when in
emergency heat mode.
8. Put the EMER-HEAT-OFF-COOL switch into the
OFF position. The heating system should turn
off. The fan may continue to run for a short
period of time.
9. Put the AUTO-ON switch into the ON position.
The blower fan should turn on. The display will show
a .
10. Put the AUTO-ON switch into the AUTO position.
The blower fan should turn off.
emer heat off cool
emer heat off cool
emer heat off cool
!
emer heat off cool
auto on
auto on
emer heat off cool
110-1090B.qxd 3/4/05 3:58 PM Page 8