-4°F to 149°F WHITE-RODGERS EMERSON ELECTRIC CO. 9797 REAVIS ROAD ST. LOUIS, MISSOURI 63123-5398 www.white-rodgers.com 1F82-261 Programmable Electronic Digital Heat Pump Thermostat INSTALLATION AND OPERATION INSTRUCTIONS • LCD continuously displays set point, and alternately dis- plays time and room temperature •...
INSTALLATION REMOVE OLD THERMOSTAT 1. Shut off electricity at the main fuse box until installation is complete. Ensure that electrical power is disconnected. 2. Remove the front cover of the old thermostat. With wires still attached, remove wall plate from the wall. If the old thermostat has a wall mounting plate, remove the thermostat and the wall mounting plate as an assembly.
Changeover Relay* Compressor Contactor * Changeover Relay is energized in COOL when O/B switch is in the “O” position Changeover Relay is energized in HEAT when O/B switch is in the “B” position ** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency Figure 2.
CHECK THERMOSTAT OPERATION If at any time during testing your system does not operate properly, contact a qualified service person. Turn on power to the system. Fan Operation If your system does not have a G terminal connection, skip to Heating System.
The Display 9 Indicates day of the week. 10 Indicates a malfunction with the system. 11 Flame icon ( ) is displayed when the SYSTEM switch is in the HEAT position. Flame icon ( ) is displayed flashing when 2nd-stage heat (Aux or Emergency) is energized. Snowflake icon ( ) is displayed (non-flashing) when the SYSTEM switch is in the COOL position.
4) Select backlit display - The display backlight improves display contrast in low lighting conditions. Selecting back- light ON will keep the light on continuously. Selecting OFF will keep the light off. 5) Select Energy Management Recovery OFF or ON - Energy Management Recovery (EMR) causes the thermo- stat to start heating or cooling early to make the building temperature reach the program setpoint at the time you...
Use the table to plan your program time periods and the temperatures you want during each period. Fill in the complete table to have a record of your programs. Entering Your Program Set Current Time and Day 1. Press TIME button once. The display will show the hour only. EXAMPLE: 2.
TROUBLESHOOTING Reset Operation If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation you can reset the thermo- Symptom No Heat/No Cool/No Fan (common problems) No Heat No Cool Heat, Cool or Fan Runs Constantly. Furnace Cycles Too Fast or Too Slow (narrow or wide temperature swing) Cooling Cycles Too Fast or Too Slow...