T3, T3R, T3M
PROGRAMMABLE THERMOSTAT
Quick Start User Guide
Online Guides
https://hwllhome.co/t3
| 1. Programming Menu | 9. Wireless signal (T3R only) |
| 2. Settings Menu | 10. Keypad Lock |
| 3. Alert | 11. Temperature adjust |
| 4. Room Temperature | 12. Right button |
| 5. Current time | 13. Middle button |
| 6. Heat demand | 14. Left button |
| 7. Optimisation | 15. Schedule period |
| 8. Low battery | 16. Day |
Default Schedule
| P1 | P2 | P3 | P4 | |
 | 6:30 | 8:00 | 18:00 | 22:30 |
 | 21°C | 16°C | 21°C | 16°C |
Adjusting the Schedule
Press MENU 
Select PROG then confirm
Select day then confirm
Select period then confirm
Adjust time then confirm
Adjust temperature then confirm
Copy Day
Select day then COPY
Select “TO” day then confirm
Delete period
Select period
Hold Left button for 3sec
Device Modes
“AUTO”
Programmed schedule is followed
“MAN”
Only set temperature is followed
“OFF”
Heating is OFF
Temperature Override
Keypad Lock
Lock
Hold Left & Right buttons for 5sec
Unlock
Hold Left & Right buttons for 5sec
Date and Time
Press MENU
Select SETTINGS then confirm
Select YEAR then confirm
Set YEAR then confirm
Set MONTH (1-12) then confirm
Repeat steps to set DAY, HOUR and MINUTE
Troubleshooting
 | 10% battery power |
 | Battery critical low |
 | Faulty sensor |
 | Wireless Signal Loss (T3R Only) |
 | Boiler service reminder (UK Only) |
www.resideo.com
Pittway Sarl, Z.A. La Pièce 4,
1180 Rolle, Switzerland
Country of origin : UK
© 2020 Resideo Technologies, Inc. All rights reserved.
The Honeywell Home trademark is used under license from Honeywell International Inc.
This product is manufactured by Resideo Technologies, Inc. and its affiliates.
Documents / Resources
 | Honeywell T3M Digital Programmable Thermostat [pdf] User Guide T3M, T3, T3R, Digital Programmable Thermostat |
