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T8190A/191108AJ, Q682
Heating or Cooling
Thermostat and Wallplate
or Heating/Cooling
Thermostat and Subbase
D.F. Rev. 9-94 ©Honeywell Inc. 1994 Form Number 69-0643—1
M3375
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Recycling Notice M3375 Welcome… This control contains mercury in a sealed to the world of energy savings with your new tube. Do not place control in the trash at the end Honeywell thermostat. The Honeywell name is of its useful life. your assurance of accurate control and reliable If this control is replacing a control that operation for years to come. contains mercury in a sealed tube, do not place Your new thermostat will automatically lower your old control in the trash. and raise the tempera
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Table of Contents Page Features of Your Thermostat ............................................................................................................ 4 Setting the Temperature .................................................................................................................. 7 Inserting Timer Batteries ................................................................................................................... 8 Setting the Timer ..................................
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1 FLIP-UP COVER. Lift it up to set clock for Features Of Your energy saving and normal temperature Thermostat periods. 2 THERMOSTAT COVER. Lift up and remove 4 to adjust heat anticipator. 1 2 3 THERMOMETER. Provides accurate room temperature reading. 4 TEMPERATURE SETTING LEVERS. Left (blue mark) controls the low temperature, right (red mark) controls the high tempera- ture. 5 TIMER. This timer provides a 24-hour slotted dial to hold the programming pins. 6 TIMER SETTING KNOB. Turn clockwise to
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8 PROGRAM INDEX WHEEL. Controls high and low temperature at specific time of day as set by program pins. 9 PROGRAM PINS. Must be inserted into 24- hour timer dial slots to control program 5 6 10 14 index wheel. 10 PIN SLOTS. Located on 24-hour dial at 10- minute intervals for program pin insertion. 11 PROGRAM DIAL. 24-hour dial with light band to indicate daytime and dark band to indicator nighttime. 12 HEAT ANTICIPATOR SCALEPLATE. Calibrated to match the heating system current draw in amperes.
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15 WALLPLATE (Included with thermostat.) Provides mounting base and wiring connections for heating-only or cooling-only thermostat. 15 M2421 16 SUBBASE (Optional, not included with thermostat; ordered separately.) Provides O mounting base, wiring connections and B manual switching control for heating/cooling R thermostat. See Setting Subbase Switches W section for additional information. G Y 16 FAN COOL ON AUTO HEAT OFF M 719 6 69-0643—1
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Setting the Temperature For Heating: ■ Set the left lever (blue mark) to the energy saving temperature you want when you are sleeping or your home is unoccupied. HIGH LOW TEMPERATURE ■ Set the right lever (red mark) to the tempera- TEMPERATURE SETTING LEVER SETTING ture you want for normal comfort periods. LEVER 50 60 70 80 NOTE: You may override the time program by setting both the red and blue levers to the same temperature setpoint. 50 60 70 80 For Cooling: ■ Set the left lever (blue ma
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Inserting Timer Batteries BATTERY LOCATION FOR Power is supplied to the timer by the 24 Vac (2) AAA BATTERIES; INSTALL WITH POSITIVE transformer, by two AAA alkaline batteries ENDS UP (included), or by the heating or cooling control circuit. Backup batteries may be installed to supply power to the timer if power is interrupted when using a 24 Vac powering method. Install batteries in thermostat as shown in Fig. 2. Once a year or when batteries are dead, replace with two new AAA alkaline batterie
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the knob carefully in a clockwise direction 23 Setting the Timer hours. Do NOT reverse the knob, or damage to ■ Lift thermostat flip-up cover and you’ll find the timer mechanism may occur. 24-hour program dial, slotted in 10-minute increments. Adjust the timer to the current PROGRAM DIAL time by carefully turning the knob clockwise . DO NOT reverse the knob. PROGRAM ■ When time is correctly set, the time indicator PIN (6) arrow (triangle shape) will point to the correct TIMER time and c
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Programming 24-HOUR PROGRAM DIAL (GRAY AREA FOR NIGHT SETTINGS) You can program your thermostat to automati- cally lower and raise the temperature one or FLIP-UP more times every 24 hours, depending on the COVER number of program pins used. Before setting your program PROGRAM Notice the slots on the program dial (Fig. 4). PINS The dial is slotted for the program pins that can be inserted at 10-minute intervals. THERMOSTAT ■ Lift thermostat flip-up cover and you will find COVER the 24-hour progra
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temperature (comfort period); a blue pin is reset the pins when the seasons change. inserted at 10:00 PM for low temperature You will also probably want to change the (energy saving period). Two additional sets of lever positions. pins are located in the program pin storage area. You can set up to six temperature To set the heating program: changes with the pins supplied. We recom- ■ Decide when you want the temperature to mend at least five hours for each energy reach the comfort level. Find th
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WINTER SUMMER PROGRAM PROGRAM To set the cooling program: TEMPERATURE TEMPERATURE PIN IN PIN IN °F °C CONTROL °F °C CONTROL ■ Decide when you want the temperature to NIGHT BEGINS 58 14 BLUE 80 27 RED ENERGY 10:00 PM reach the comfort level. Find the notch on the SAVING ENDS 68 20 75 24 RED BLUE PERIOD dial that is one-half hour before this time and 6:00 AM DAY BEGINS insert a blue pin. The low temperature is in 58 27 14 BLUE 80 RED ENERGY 7:30 AM SAVING effect. The half-hour head start gives th
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Setting Subbase Switches (if applicable) The subbase system switch controls system The subbase fan switch controls fan opera- operation as follows: tion as follows: HEAT—Heating system is controlled by the ON—Fan operates continuously. thermostat. Cooling system is off. AUTO—Fan operates with cooling equipment as COOL—Cooling system is controlled by the controlled by the thermostat or with the thermostat. Heating system is off. heating equipment as controlled by the OFF—Both the heating and cool
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Troubleshooting Your Honeywell thermostat requires little or no attention. Most problems can generally be traced to the following. Problem Check Action No heat. —System switch may be in OFF Move system switch to HEAT position. 2 or COOL position. —Fuse or circuit breaker. If blown or tripped, replace fuse or reset breaker. —Furnace power switch may be Move switch to ON . OFF. —Pilot flame may be out. Relight pilot flame according to furnace manufacturer instructions. —Thermostat connections. Tur
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Troubleshooting (Continued) Problem Check Action Energy saving — Program dial for proper day Turn timer ahead 12 hours. Turn temperature or night phase. knob clockwise only. program is 12 hours. Rooms do not — Timer program for heating Move red pin one-half hour earlier warm up at the system may need more time on the program dial. programmed to warm up rooms. 2 time. Temperature — Program pins for correct time Relocate pins to desired settings. change occurs locations. at the wrong time. Room te
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Troubleshooting (Continued) Problem Check Action Room —Thermostat circuits. Heating mode—Move temperature temperatures setting levers 5° F [3° C] above room are not correct temperature. Heating system should (continued). start. Cooling mode—Move temperature setting levers 5° F [3° C] below room temperature. Cooling system should start. If the system does not operate, call a qualified service technician. Burner-on time —Anticipator setting. (See Fig. 6 Increase anticipator setting by 0.05 too sho
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Troubleshooting (Continued) Problem Check Action No cooling. —System switch may be in OFF Move switch to COOL position. 1 or HEAT position. —Fuse or circuit breaker. If fuse is blown or breaker tripped, replace or reset. If fuse blows again, call the heating and air conditioning dealer. —Condenser switch position. Move to ON position. Located outdoors and may be turned off. —Thermostat connections. Turn off power to cooling system. Check for correct terminal hookups. Repair any frayed or broken
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Troubleshooting (Continued) Problem Check Action Thermostat setting —Level position of thermostat. Reinstall thermostat wallplate or and thermometer subbase. Use a spirit level. reading disagree. —Area around thermostat for Thermostat should be about 5 ft drafts or radiant heat. [1.5m] above floor on an inside wall. Contact qualified service technician for change of location. —Calibration of thermometer. See Thermometer Adjustment section. Timer does not run. —Thermostat connections at the two C
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Troubleshooting (Continued) Problem Check Action Timer does not —Voltage across the two C Remove thermostat from the wallplate run (continued). terminals. or subbase and measure the voltage. Refer to Voltage at Timer Terminals table for cause and reaction. —Pins in program dial. If pins are Push down on pins to make sure they not completely seated in are completely seated in program dial. program dial, jamming with index wheel can occur. Timer loses time. —Power may be interrupted. Make sure pow
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Troubleshooting (Continued) Problem Check Action Timer loses time —Batteries may need Replace with two new AAA alkaline (continued). replacement. batteries as shown in Fig. 2. 1 Not applicable on model used in heating-only system. 2 Not applicable on model used in cooling-only system. 3 If timer is not battery powered, timer may still use batteries for backup. If this Troubleshooting section did not solve the problem, call a qualified service technician or the Honeywell Customer Assistance Cente
