Venstar T2300FS Programmable Digital Thermostat
PREPARATION
- Proper installation of the thermostat will be accomplished by following these step by step instructions. If you are unsure about any of these steps, call a qualified technician for assistance.
- Assemble tools & recommended Junction Box
- 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
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.
- Remove the white plastic wire connector from the rear of the thermostat. Install wires as directed. Press the wired connector on the back of the thermostat
For best operation, install the thermostat in a junction box that is free from drafts that originate inside the wall
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
Sample Wiring Diagrams
Gas or Electric Heat
5 Wire, 1 Stage Cooling, 1 Stage Gas Heat
4 Wire, 1 Stage Cooling, 1 Stage Gas Heat
6 Wire, 2 Stage Cooling, 1 Stage Gas Heat
6 Wire, 1 Stage Cooling, 2 Stage Heat
7 Wire, 2 Stage Cooling, 2 Stage Heat
Wire, 1 Stage Cooling, 1 Stage Heat-Heat Pump* with O or b reversing valve**. Residential Heat Pumps, split systems & package units, with no auxiliary heat.
6 Wire, 1 Stage Cooling, 2 Stage Heat-Heat Pump* with O or b reversing valve**. Residential Heat Pumps, split systems & package units, with auxiliary heat.
TEST OPERATION
- Turn the power on to the Heating/Air Conditioning system
- Press the MODE 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 HVAC unit should energize in the heating mode
- Press the MODE 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.
- Press the UP button until the set temperature is equal to the room temperature; cooling should deenergize. Follow the instructions on page 15 of the Owner’s
- Manual to turn the fan on in step 3. The fan should turn on and run continuously
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 250 ohm, 10 watt power resistor at the furnace as shown below
- SYMPTOM: The air conditioning does not attempt to turn on.
- CAUSE: The compressor timer lockout may prevent the air conditioner from turning on, for a period of time.
- REMEDY: See page 16 of the Owner’s Manual and configure step 9 to defeat the 5- minute compressor lockout.
- SYMPTOM: The display is blank.
- CAUSE: Lack of proper power.
- REMEDY: Make sure power is turned on to the furnace and 24vac between R & W. If C is used, 24vac between R & C.
- 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: See page 15 of the Owner’s Manual and configure step 4 to enable heat pump operation.
- SYMPTOM: When calling for cooling, both the heat and cool come on.
- CAUSE: The thermostat is configured to control a heat pump and the HVAC system is a “conventional” (non-heat pump) system.
- REMEDY: See page 15 of the Owner’s Manual and set step 4 to OFF to enable gas electric operation.
FCC
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation
REFERENCE
DOWNLOAD MANUAL
Venstar T2300FS Programmable Digital Thermostat Installation Installation
Venstar T2300FS Programmable Digital Thermostat Installation Installation