Installation Instructions TSTATCCPF101 TSTATBBPF101 P374-1000FM Digital Thermostat NOTE: Read the entire instruciton manual before starting the installation. I2:00 Am 72 HEAT COOL 74 COOL AUTO & 70 HEAT HEAT PUMP MULTI-STAGE Form: IM-TSTAT-09 SINGLE DAY PROGRAMMABLE Cancels: N/A Printed in U.S.A. Catalog No.
Table Of Contents PREPARATION REMOVE OLD THERMOSTAT WIRE CONNECTIONS WIRING DIAGRAMS CALIBRATION TEST OPERATION TROUBLESHOOTING CAUTION 2 3 4 5 7 8 9 Follow Installation Instructions carefully. DISCONNECT POWER TO THE HEATER AIR CONDITIONER BEFORE REMOVING THE OLD THERMOSTAT AND INSTALLING THE NEW THERMOSTAT. Replacement Components Division WARNING Carrier Corporation 4/01 This device complies with Part 15 of the FCC rules.
STEP #1 PREPARATION FLATSTAT EXTENDS LESS THAN 3/8” FROM THE WALL. Flat Blade Screwdriver Wire cutter & Stripper .366” Make sure your Heater/Air Conditioner is working properly before beginning installation of the thermostat. Carefully unpack the thermostat. Save the screws, wall anchors, and instructions. Turn off the power to the Heating/Air Conditioning system at the main fuse panel. Most residential systems have a separate breaker for disconnecting power to the furnace.
STEP #2 REMOVE & REPLACE OLD THERMOSTAT Remove the cover of the old thermostat. If it does not come off easily check for screws. Loosen the screws holding the thermostat base or subbase to the wall, and lift away. Disconnect the wires from the old thermostat. Tape the ends of the wires as you disconnect them, and mark them with the letter of the terminal for easy reconnection to the new thermostat. Keep the old thermostat for reference purposes, until your new thermostat is functioning properly.
STEP #3 WIRE CONNECTIONS If the terminal designations on your old thermostat do not match those on the new thermostat, refer to the chart below, or the wiring diagrams that follow. Wire from the old thermostat terminal marked Function Install on the new thermostat connector marked G G or F Fan - low speed Y1, Y or C Cooling W1, W or H Heating Y1 W1,O,B Rh, R, M, Vr, A Power C Common C* O/B Rev.
Sample Wiring Diagrams 5 Wire, 1 Stage Cooling, 1 Stage Gas Heat O W2 Y2 R W1 Y1 G Residential Gas or Electric Heat *, Electric Cool, split systems & package units C Thermostat L E 24 vac common C fan relay compressor relay G Y1 O 1st stage heat circuit 24 vac return * If using electric heat this option must be selected on during advanced setup.
Sample Wiring Diagrams 6 Wire, 1 Stage Cooling, 2 Stage Heat O W2 Y2 R W1 Y1 G Residential & commercial 1 Stage Cooling, with 2 Stage Gas or Electric Heat* C Thermostat L E 24 vac common C fan relay compressor relay Y1 G O 1st stage heat circuit 24 vac return W1 R Y2 2nd stage heat circuit W2 5 Wire, 1 Stage Cooling, 1 Stage Heat - Heat Pump* O W2 Y2 R W1 Y1 G No auxiliary heat, residential Heat Pumps , split systems & package units C Thermostat L E 24 vac common C fan relay compressor r
Sample Wiring Diagram 6 Wire, 1 Stage Cooling, 2 Stage Heat, Heat Pump * O W2 Y2 R W1 Y1 G C Most residential split and package heat pumps with auxiliary heat Thermostat L E 24 vac common C fan relay compressor relay G 1st stage heat circuit Y1 O W1 24 vac return R 2nd stage heat circuit W2 Y2 * The heat pump option must be selected on during advanced setup. Calibration Every thermostat is calibrated before it leaves the factory.
STEP #4 TEST OPERATION Turn the power on to the Heating/Air Conditioning system. Press the On/Off button repeatedly until the HEAT icon appears on the display. Press the Up or Down buttons until the set temperature is 10 degrees above room temperature. The furnace should turn on. Press the On/Off button repeatedly until the COOL icon appears on the display. Press the Up or Down buttons until the set temperature is 10 degrees below room temperature. The air conditioner should turn on.
TROUBLESHOOTING SYMPTOM: When using 4 wires (R, G, W, Y), the air conditioning equipment tries repeatedly to turn on, but cannot. At times the display dims or disappears. CAUSE: There is not enough power available to "power share". REMEDY: Connect a 270 ohm, 10 watt power resistor at the furnace as shown below. For Problem A/C R G W Y For Problem Heat C R TR300-10w G W Y C TR300-10w SYMPTOM: The air conditioning does not attempt to turn on.
TROUBLESHOOTING SYMPTOM: The air conditioning does not attempt to turn on. CAUSE: The cooling setpoint is set too high. REMEDY: Consult the Owner's Manual in the Setup section to lower the cooling setpoint limit. SYMPTOM: The heating does not attempt to turn on. CAUSE: The heating setpoint is set too low. REMEDY: Consult the Owner's Manual in the Setup section to raise the heating setpoint limit.
TROUBLESHOOTING SYMPTOM: When controlling a residential heat pump, and asking for cooling, the heat comes on. CAUSE: Heat pump is not selected on in the Advanced Setup. REMEDY: Select heat pump on during Advanced Setup programming. Consult the Owner's Manual. SYMPTOM: When calling for cooling, both the heat and cool come on. CAUSE: The Advanced Setup is configured to control a heat pump, and the hvac the thermostat is controlling is a "conventional" (non heat pump) system.
