Honeywell T3 Programmable Thermostat
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Online Guides
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- Programming Menu
- Settings Menu
- Alert
- Room Temperature
- Current time
- Heat demand
- Optimization
- Low battery
- Wireless signal (T3R only)
- Keypad Lock
- Temperature adjust
- Right button
- Middle button
- Left button
- Schedule period
- 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
① Press MENU
② Select PROG then confirm
③ Select day then confirm
④ Select period then confirm
⑤ Adjust time then confirm
⑥ Adjust temperature then confirm
Copy Day
① Select day then COPY
② Select “TO” day then confirm
Delete period
① Select period
② 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
① Hold Left & Right buttons for 5sec
② Hold Left & Right buttons for 5sec
Date and Time
① Press MENU
② Select SETTINGS then confirm
③ Select YEAR then confirm
④ Set YEAR then confirm
⑤ Set MONTH (1-12) then confirm
⑥ 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) |
HoneywellHome Comfort from Resideo | English
