Honeywell T8090A Support Question
Honeywell T8090A Support Question
Find answers below for this question about Honeywell T8090A.Need a Honeywell T8090A manual? We have 1 online manual for this item!
Question posted by falcn0413 on October 6th, 2020
Chronotherm T8090a Heat Only
I have 4 wires at the t-stat ....blue,red,white & off white. i have terminals c ,w, and c. At one point all wires were screwed into a terminal. I wanted a smart t-stat. took pics of what the wires where screwed into. i want to put the old chronotherme stat back but i lost the pic of the wiring.How can i find out where the wires belong?thank you
Current Answers
Answer #1: Posted by INIMITABLE on October 6th, 2020 3:59 PM
INIMITABLE
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I hope this is helpful? PLEASE "ACCEPT" and mark it "HELPFUL" to complement my little effort. Hope to bring you more detailed answers
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Related Honeywell T8090A Manual Pages
Owner's Manual - Page 1
Heating or Cooling Thermostat and Wallplate or
Heating/Cooling Thermostat and Subbase
T8090A/191108A, Q682B
OWNER'S MANUAL 1
696-095-07547-4-22
Owner's Manual - Page 2
.... The Honeywell name is replacing a control that contains mercury in a sealed tube, do not place your new thermostat. Your new thermostat will automatically lower and raise the temperature in your assurance of accurate control and reliable operation for instructions regarding recycling ... local waste management authority for years to come. Contact your new Honeywell fuel saver thermostat.
Owner's Manual - Page 3
TABLE OF CONTENTS
Features Of Your Thermostat ...4 Setting The Temperature ...7 Inserting Clock Batteries ...8 Setting The Clock ...9 Programming ...10 Troubleshooting ...14 Servicing The Thermostat ...23 Cycle Rate Adjustment ...23 Thermometer Adjustment ...24 Warranty ...27
3
69-0574-2
Owner's Manual - Page 4
...clock- Arrow head indicates
time for
energy savings and normal temperature
periods.
2 THERMOSTAT COVER. Provides accurate room
temperature reading.
4 CLOCK. Left (blue mark) controls the low temperature, right (red mark) controls the high temperature.
1
2
3
M8726
69-0574-2
4 ...by program pins.
8 TEMPERATURE SETTING LEVERS. Lift up to adjust heat anticipator.
3 THERMOMETER.
Owner's Manual - Page 5
... (2). Must be inserted into 24-hour clock dial slots to energy savings setting and vice versa without changing the program.
12 HEAT ANTICIPATOR SCALEPLATE. Must be adjusted to match the heating system current draw in amperes.
13 ANTICIPATOR SETTING LEVER. Allows change from comfort to control program index wheel.
10 PIN SLOTS...
Owner's Manual - Page 6
15 191108AJ WALLPLATE. Provides mounting base, wiring connections and manual switching control for heating-only or cooling-only thermostat.
15
16 Q682B SUBBASE. Provides mounting base and wiring connections for heating/cooling thermostat.
69-0574-2
16 6
M2421
R
G
FAN ON
AUTO
O B W
Y
HEAT
COOL OFF
M719
Owner's Manual - Page 7
... TEMPERATURE SETTING LEVER (RED MARK)
4 3 2 1 12 11
4 3 2 1 12 11
9 10
5
6
8
7
6
M1520
Fig. 1-Setting high and low temperature levers.
7
69-0574-2 Setting The Temperature
For Heating:
Set the left lever (blue mark) to the same temperature set point. For Cooling:
Set the left lever (blue mark) to the energy savings temperature you want when you are sleeping...
Owner's Manual - Page 8
... 24 Vac transformer, by two AAA alkaline batteries (included), or by the heating or cooling control circuit. BATTERY LOCATION FOR (2) AAA BATTERIES; Once a year or when batteries are dead, replace with two new AAA alkaline batteries. Install batteries in thermostat as shown in Fig. 2. Inserting Clock Batteries
Power is supplied to the...
Owner's Manual - Page 10
... is inserted at ten-minute intervals. Programming
You can program your thermostat. Three red and three blue program pins are included with the pins supplied. A heating program has been preprogrammed. Before setting your program:
Lift thermostat flip-up to six temperature changes with your thermostat to automatically lower and raise the temperature one or more times...
Owner's Manual - Page 11
... 58 10:00 PM
14
BLUE
ENDS
68
20
RED
6:00 AM
BEGINS 58 7:30 AM
14
BLUE
ENDS 4:00 PM
68
20
RED
SUMMER
PROGRAM TEMPERATURE PIN IN
°F
°C CONTROL
80
27
RED
75
24
BLUE
80
27
RED
75
24
BLUE
M1690B
Fig. 5-Programming examples.
• You can set point. Setting the Heating Program:
Decide when you...
Owner's Manual - Page 14
... power to the following:
Problem No heat.
69-0574-2
Check
Action
- Check for assistance.
(continued)
14 Turn On power.
- fuse or circuit breaker. Relight pilot flame per furnace manufacturers instructions.
- other problem. May be traced to furnace. pilot flame. Firmly tighten all terminal screws. Troubleshooting
Your Honeywell thermostat requires little or no attention. Move...
Owner's Manual - Page 15
...red pin one-half hour earlier on the program dial. Relocate pins to desired temperatures.
time. positions of subbase system switch. Action Turn timer ahead 12 hours.
Reset to desired settings. program dial for heating... system.
timer program for proper day or
temperature program night phase.
12 hours off.
Room temperatures - position of thermostat setpoint...
Owner's Manual - Page 16
thermostat circuits.
Cooling system should start.
(continued)
69-0574-2
16 If the system does not operate, call a qualified technician. COOLING ONLY SYSTEM-Move temperature setting levers 5°F (3°C) below room temperature. Heating system should start . Heating system should start . If the system does not operate, call a qualified technician.
HEATING/COOLING SYSTEM-With ...
Owner's Manual - Page 17
anticipator setting. (See figure on page 23 for anticipator location.)
-
Observe burner operation. May be in OFF or HEAT position.
- Increase anticipator setting by 0.05. Observe burner operation. If fuse is blown or breaker tripped, replace or reset.
(continued)
17
69-0574-2 No cooling. 1
...
Owner's Manual - Page 18
... outdoors and may be about 5 ft (1.5m) above floor on an inside wall. Move to cooling system. Repair any frayed or broken wires.
Reinstall thermostat wallplate or subbase. Thermostat should be turned OFF. Check
Action
-
Firmly tighten all terminal screws.
- other. condenser switch position. for assistance.
-
Contact a qualified service technician for correct...
Owner's Manual - Page 19
....
- If no connections, clock needs batteries in order to the table on page 8. Refer to run .
- voltage across the two C terminals.
19
Action See instructions on page 8.
Replace thermostat. Troubleshooting (continued)
Problem
Thermostat setting and thermometer reading disagree (continued). Check - Replace with two new AAA alkaline batteries as shown on page 24.
if...
Owner's Manual - Page 20
....
(continued)
69-0574-2
20 If pins are completely seated in program dial.
- May be off power to system. Safety limit on . power. If clock powered Wire separate transformer to power clock, or
through system transformer,
install backup batteries as shown on pins to clock and equipment
may occur. Reset clock.
-
high...
Owner's Manual - Page 21
...
69-0574-2 We recommend Energizer® batteries.
1 Not applicable on model used in heating-only system.
2 Not applicable on page 8. Action
Replace with two new AAA alkaline..., clock may need replacement. If this Troubleshooting section has not solved the problem, call your qualified heating service technician or Honeywell Customer Assistance Center, 1-800-468-1502, Monday-Friday, 7:00 AM to ...
Owner's Manual - Page 22
... power is inadequate.
2. Replace transformer.
1. Install transformer with subbase terminals.
2. Up to 15 Vac.
15 to ensure proper contact.
2. Short in clock power supply wiring.
3. System transformer used to power 1. Additional (separate) transformer
voltage. System power off.
1. Spring fingers o thermostat not making proper contact with proper secondary
2. Limit switch...
Owner's Manual - Page 23
... enough to keep the room temperature close 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. 6).
Observe the heating system operation after each adjustment.
If the thermostat seems to the temperature lever settings. NOTE: Most hot...
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