Contact your local waste management authority for instructions regarding recycling and the proper disposal of this control, or of an old control containing mercury in a sealed tube. If you have questions, call Honeywell Inc. at 1-800-468-1502. M3375 place your old...
Features of Your Thermostat FLIP-UP COVER. Lift up to set clock for energy savings and normal temperature periods. THERMOSTAT COVER. Lift up and remove to adjust heat anticipator. THERMOMETER. Provides accurate room temperature reading. PROGRAM INDICATOR. Blue indicates low temperature is in effect; red indicates high temperature is in effect.
TEMPERATURE SETTING LEVERS. Left (blue mark) controls low temperature and right (red mark) controls the high temperature. 10 PROGRAM PINS. Insert into 24-hour clock dial slots to control program index wheel. 11 PIN SLOTS. Located on 24-hour dial at 10-minute intervals for program pin insertion. 12 PROGRAM DIAL.
18 Q682 SUBBASE (not included with thermostat; ordered separately). Provides mounting base, wiring connections and manual switching control for heating/cooling thermostat. See Setting Subbase Switches section for additional information. COOL AUTO HEAT M1809...
Setting the Temperature (Fig. 1) For Heating: Set the left lever (blue mark) to the energy savings temperature you want when you are sleeping or your home is unoccupied. Set the right lever (red mark) to the tempera- ture you want for normal comfort periods. NOTE: You may override the time program by setting both the red and blue levers to the same temperature setpoint.
ON—Fan operates continuously. AUTO—Fan operates with cooling equipment as controlled by the thermostat or with heating equipment as controlled by the plenum fan switch. In electric heat, heat pump and fan coil systems, the fan is controlled by the thermo- stat in heating and cooling.
Inserting Clock Batteries Power is supplied to the clock by the 24 Vac transformer. Backup batteries (not included) may be installed to supply power to the clock when power is interrupted. Install batteries in thermo- stat as shown in Fig. 2. Once a year or when batteries are dead, replace with two new AAA alkaline batteries.
Setting the Clock Lift thermostat flip-up cover to find the 24-hour program dial, slotted in 10-minute increments. Adjust the clock to the current time by moving the minute hand carefully in a clockwise Do not direction. reverse the minute hand.
24 hours, depending on the number of program pins used. Before setting your program Lift thermostat flip-up cover to find the 24-hour program dial. The slots on the program dial (Fig. 4) are for the program pins that can be inserted at 10-minute intervals.
period). Two additional sets of pins are located in the program pin storage area. You can set up to six temperature changes with the pins supplied. We recommend at least five hours for each energy saving period. To change the pins or add a new energy saving period—...
WINTER PROGRAM TEMPERATURE PIN IN °F CONTROL °C BLUE BEGINS NIGHT 10:00 PM ENERGY SAVING ENDS PERIOD 6:00 AM BEGINS BLUE ENERGY 7:30 AM SAVING ENDS PERIOD 4:00 PM Fig. 5—Programming Examples. Setting the Cooling Program: SUMMER PROGRAM Decide when you want the temperature to TEMPERATURE PIN IN reach the comfort level.
Press the button to immediately begin an energy savings period or return to the normal setting. After pressing the button, check the program indicator on the thermostat cover to assure the system is in the desired mode. If the program indicator shows blue, the lower tempera- ture is in effect;...
Troubleshooting Your Honeywell thermostat requires little or no attention. Most problems can generally be traced to the following: Problem Check No heat. — system switch. May be in OFF or COOL position. — fuse or circuit breaker. — furnace power switch.
Temperature — program pins for correct time change occurs locations. at the wrong time. Room — positions of thermostat set temperatures point levers. are not correct. — position of subbase system switch (heating-cooling model). Action Contact a qualified service technician for assistance.
Troubleshooting (Continued) Problem Check Room — thermostat circuits. temperatures are not correct (continued). Action HEATING-ONLY SYSTEM—Move temperature setting levers 5° F [3° C] above room temperature. Heating system If the system does not should start. operate, call a qualified service technician.
Troubleshooting (Continued) Problem Check Room temperatures are not correct (continued). Burner-on time — anticipator setting. (See Fig. 6 too short. for anticipator location.) Burner-on time — anticipator setting. (See Fig. 6 too long. for anticipator location.) No cooling. — system switch. May be in OFF or HEAT position.
Turn OFF power to cooling system. Contact a qualified service technician for assistance. Reinstall thermostat wallplate or subbase. Use a spirit level. Thermostat should be about 5 ft [1.5m] above floor on an inside wall. Contact a qualified service technician for change of location. (Continued)
Clock loses time. — power. May be interrupted. Action See instructions on page 24. Remove thermostat from the wallplate or subbase and measure the voltage. Refer to the table on page 22 for cause and reaction. Push down on pins to make sure they are completely seated in program dial.
Not applicable on model used in heating-only system. Not applicable on model used in cooling-only system. If this Troubleshooting section has not solved the problem, call a qualified service technician or Honeywell Assistance Center, 1-800-468-1502, Monday-Friday, 7:00 a.m. to 5:30 p.m., Central time, for additional assistance. Action...
— Additional (separate) transformer used to power the clock has inadequate voltage. 15 to 30 Vac. — Spring fingers on thermostat not making proper contact with subbase terminals. — Clock has failed. Action — Restore power.
The equipment should cycle on and off just enough to keep the room temperature close to the temperature lever settings. If the thermostat seems to cycle the heating system too fast or too slow, adjust the cycle rate by moving the anticipator setting lever one indicator mark at a time (Fig.
1. Remove thermostat cover and open the flip-up cover. 2. Set the thermostat cover on a table near a thermometer of known accuracy. 3. Allow at least five minutes for cover thermometer to sense area temperature, then compare the readings.
If you have questions regarding the installation and programming of your Honeywell thermostat, please contact the Honeywell Customer Assistance Center at 1-800-468-1502, Monday-Friday, 7:30 a.m. to 4:00 p.m., Central time. Before you call, please have the following information available: make and model of furnace, old thermostat, and air conditioner.
Plymouth, MN 55441-4437 This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer.