Instruction/ maintenance manual of the product T8090A/191108A Honeywell
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1 69-0574—2 Heating or Cooling Thermostat and W allplate or Heating/Cooling Thermostat and Subbase T8090A/191108A, Q682B OWNER’S MANUAL 69-0574-2.
69-0574—2 2 Welcome to the world of energy savings with your new Honeywell fuel saver thermostat. The Honeywell name is your assurance of accurate control and reliable operation for years to come. Your new thermostat will automatically lower and raise the temperature in your home one or more times every 24 hours.
3 69-0574—2 TABLE OF CONTENTS Features Of Your Thermostat .................................................................................................... ....... 4 Setting The Temperature ........................................................
69-0574—2 4 Features Of Y our Thermostat 8 TEMPERATURE SETTING LEVERS. Left (blue mark) controls the low temperature, right (red mark) controls the high temperature. 1 FLIP-UP COVER. Lift it up to set clock for energy savings and normal temperature periods.
5 69-0574—2 9 PROGRAM PINS. Must be inserted into 24-hour clock dial slots to control program index wheel. 10 PIN SLOTS. Located on 24-hour dial at 10-minute intervals for program pin insertion. 11 MANUAL PROGRAM ADVANCE BUTTON. Allows change from comfort to energy savings setting and vice versa without changing the program.
69-0574—2 6 15 191108AJ WALLPLATE. Provides mount- ing base and wiring connections for heating-only or cooling-only thermostat. 16 Q682B SUBBASE. Provides mounting base, wiring connections and manual switching control for heating/cooling thermostat.
7 69-0574—2 Setting The T emperature 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 tem- perature you want for normal comfort periods.
69-0574—2 8 Inserting Clock Batteries Power is supplied to the clock by the 24 Vac transformer, by two AAA alkaline batteries (included), or by the heating or cooling control circuit. Backup batteries may be installed to supply power to the clock if power is inter- rupted when using 24 Vac powering method.
9 69-0574—2 Setting The Cloc k Lift thermostat flip-up cover and you’ll 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 clock- wise direction. DO NOT reverse the minute hand.
69-0574—2 10 Pr ogramming You can program your thermostat to automatically lower and raise the temperature one or more times every 24 hours. Before setting your program: Lift thermostat flip-up cover and you'll find the 24-hour program dial. The slots on the program dial (Fig.
11 69-0574—2 To change the pins or add a new energy savings period: • To insert a pin, push it straight into the selected notch on the program dial until it’s completely seated. • To remove a pin, press against program dial and pull the pin straight out.
69-0574—2 12 Setting the Cooling Program: Decide when you want the temperature to reach the comfort level. Find the notch on the dial that’s one-half hour before this time and insert a blue pin. The half-hour head start gives the air conditioner time to cool the house before you wake up or arrive home.
13 69-0574—2 Star t Or End Pr ograms With Manual Pr ogram Adv ance Button IMPORTANT: To prevent damage to the program advance mechanism, DO NOT use the program advance button within a 30-minute period before or after a program change.
69-0574—2 14 Tr oubleshooting 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 or COOL position. Move system switch to HEAT position.
15 69-0574—2 Troubleshooting (continued) Problem Check Action Energy savings temperature program 12 hours off. — program dial for proper day or night phase. Turn timer ahead 12 hours. Move setting knob clockwise only. Rooms do not warm up at programmed time.
69-0574—2 16 Troubleshooting (continued) (continued) Problem Check Action Room temperatures are not correct (continued). — thermostat circuits. HEATING-ONLY SYSTEM—Move temperature setting levers 5°F (3°C) above room temperature. Heating system should start.
17 69-0574—2 Troubleshooting (continued) Problem Check Action Room Temperatures are not correct ( continued). With system switch at COOL, move temperature setting levers 5°F (3°C) below room temperature. Cooling system should start. If the systems do not operate, call a qualified technician.
69-0574—2 18 Troubleshooting (continued) Problem Check Action No cooling 1 (continued) — condenser switch position. Located outdoors and may be turned OFF. Move to ON position. — thermostat connections. Check for correct terminal hookups. Repair any frayed or broken wires.
19 69-0574—2 Troubleshooting (continued) 3 Problem Check Action Thermostat setting and thermometer reading disagree (continued) . — calibration of thermometer. See instructions on page 24. Clock does not run. — thermostat connections at the two C terminals.
69-0574—2 20 Troubleshooting (continued) (continued) Problem Check Action Clock does not run (continued) . — pins in program dial. If pins are not completely seated in program dial, jamming with index wheel may occur. Push down on pins to make sure they are completely seated in program dial.
21 69-0574—2 Troubleshooting (continued) 1 Not applicable on model used in heating-only system. 2 Not applicable on model used in cooling-only system.
69-0574—2 22 Voltage At Clock Terminals AC Voltge at C-C Terminals Check Action 0 Vac. 1. System power off. 2. Short in clock power supply wiring. 3. Limit switch contacts stuck open. 4. Transformer supplying power is burned out. 1. Restore power. 2.
23 69-0574—2 Servicing The Thermostat Cycle Rate Adjustment The equipment should cycle on and off just enough to keep the room temperature close to the temperature lever settings.
69-0574—2 24 Thermometer Adjustment The thermometer has been accurately calibrated at the factory and should only need adjust- ment if it has been dropped or mishandled. If the set point lever and the thermometer reading do not agree, follow the procedure below.
25 69-0574—2.
69-0574—2 26 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, 7:00 AM to 5:30 PM, Central time.
27 69-0574—2 Limited One-Year Warranty Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) year from the date of purchase by the consumer.
69-0574—2 28 D.F. ©Honeywell Inc. 1995 Rev. 1-95 Form Number 69-0574—2 Automation and Control Solutions Honeywell International Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive Nort.
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However, one of the most important roles played by the user manual is to help in solving problems with Honeywell T8090A/191108A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell T8090A/191108A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
