Related Manuals for Honeywell T4
Summary of Contents for Honeywell T4
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Page 1: User Guide
T4, T4R & T4M Thermostat User Guide Programmable Thermostat Wireless Programmable Thermostat Programmable Modulating Thermostat... -
Page 3: Table Of Contents
Away mode ....................10 Schedule Override ..................11 Temporary Override ............. 11 Timed Override ..............11 Turn Schedule Off ..............11 Changing the Batteries (T4 & T4R only) .......... 12 Wireless Receiver Box (T4R only) ............13 Troubleshooting .................... 14... -
Page 4: Thermostat Interface
Thermostat Interface Setpoint Room Setpoint Heat periods temperature temperature demand battery Wireless Signal (T4R only) Days of week Current time / Schedule Timer status Menu items Alert / Fault Temperature adjustment / Menu navigation Timed override Back Menu Standby mode Away mode Confirm Home screen... -
Page 5: Menu & Navigation Icons
Menu & Navigation Icons Menu: Options and settings of your Thermostat: Heating schedule Clock Date Keypad lock Optimisation OpenTherm® boiler alerts (T4M only) Back: Return to the previous screen/menu. Confirm: Confirm a change or selection. Cancel: Reject a change without saving. Timed override: Set a timed duration for the override. -
Page 6: Menu
Menu Heating schedule Your Thermostat comes with the following default schedule. Follow the next steps to adjust the programmed schedule. Days 1 to 5 (Mon to Fri) Days 6 & 7 (Sat & Sun) Period Time °C Time °C 6:30 - 8:00 19 °C 8:00 - 10:00 19 °C... - Page 7 4. Press to select the day to 5. Press to select the period be adjusted and press to be adjusted and press 6. Press to adjust the 7. Press to adjust the start time and press end time and press 8.
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Page 8: Clock
Menu Clock To make adjustments to the clock format or time. 1. Press to enter the main menu. 2. Press to select the Clock menu and press 3. Press to change the clock format and press 4. Press to adjust the time and press Date To make adjustments to the date - Year/Month/Day. -
Page 9: Optimisation
Menu Optimisation Your Thermostat has optimisation functions that aim to save energy while maintaining suitable comfort levels. The Thermostat displays during the optimisation period if set. • Optimum Start learns how long it takes your home to reach a set temperature and then turns the heating on a bit earlier to achieve that temperature at the programmed time. -
Page 10: Opentherm® Boiler Alerts (T4M Only)
Menu OpenTherm® boiler alerts (T4M only) If you have T4M Thermostat fitted to an OpenTherm® boiler, you can view alerts received form the boiler about your heating system. 1. Press to enter the main menu. 2. Press to select the OpenTherm alerts menu and press 3. -
Page 11: Schedule Override
Schedule Override During normal use your Thermostat will follow the programmed schedule - indicated by icon. There are a few ways you can override the schedule to suit your current needs. Temporary Override Set until next programmed setpoint is reached. 1. -
Page 12: Changing The Batteries (T4 & T4R Only)
Changing the Batteries (T4 & T4R only) The Thermostat is powered by batteries, although a battery icon is not shown on the display during normal use. The only time you will see the battery icon is when they get low on power. -
Page 13: Wireless Receiver Box (T4R Only)
Wireless Receiver Box (T4R only) The T4R Thermostat communicates wirelessly to the Receiver Box which is wired to the boiler. If the Thermostat loses wireless communication or becomes faulty, the boiler can be switched on or off manually using the button on the Receiver Box •... -
Page 14: Troubleshooting
If you have difficulty with your Thermostat, try these suggestions. Most problems can be corrected quickly and easily. All models Screen is blank Replace the batteries (T4 & T4R only). Check the OpenTherm boiler has power (T4M only). Contact installer. Thermostat shows Batteries have less than 10% power and need to be replaced soon. - Page 15 T4R (Wireless) Thermostat & Receiver Box only Wireless signal lost - Move the Thermostat is flashing Thermostat to another location to try and Receiver Box LED is and restore communication. flashing RED. Check Receiver Box has power by pressing Thermostat is flashing the button to switch boiler on.
- Page 16 Programmable Thermostat Wireless Programmable Thermostat Programmable Modulating Thermostat Honeywell Control Systems Ltd. Skimped Hill Lane, Bracknell, Berkshire RG12 1EB www.honeywelluk.com © 2016 Honeywell International Inc. Printed in the UK 32318059-001 B...
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Questions and answers
How to adjust temperature on/off range. ie. if room temperature set at 70 degrees, I want heat to go on if temperature gets below 68 (or some other level) and heat to go off once room reaches 70.
To adjust the temperature on/off range for the Honeywell T4 thermostat, follow these steps:
1. Access the Installer Setup Menu:
- Press and hold the Menu and + (Up) buttons together for about 5 seconds.
- This will enter the installer settings mode.
2. Navigate to Temperature Limits:
- Use the + (Up) or - (Down) buttons to scroll through the settings.
- Look for the maximum temperature limit (range stop high) and minimum temperature limit (range stop low) options.
3. Adjust the Temperature Range:
- Select the desired maximum and minimum temperature limits using the + (Up) or - (Down) buttons.
- Confirm the selection by pressing Select or Done (depending on the model).
4. Save and Exit:
- Continue scrolling until you see the option to Exit or Done.
- Press the corresponding button to save the settings and return to the home screen.
This will allow you to change the maximum and minimum temperature settings according to your needs.
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Is tHere a special setting for oil fired boilers in the t4r menu
Yes, the Honeywell T4 has a special setting for oil-fired boilers. The minimum ON time should be set to 4 minutes, and the cycle per hour should be set to 3.
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Hi, I used the - to turn the temperature down to 19 C . Now I think it has set to be 19C 24 h constantly On the right side it says auto. How do I know it it is turned to the auto settings? Or it is on constant override?
On the Honeywell T4 thermostat screen, check the fan setting. If it displays "Fan Auto," the thermostat is set to automatic mode, meaning the fan will run only when heating or cooling is active. If it displays "Fan On," the thermostat is in constant override mode, meaning the fan runs continuously regardless of heating or cooling status.
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How do I change the batteries
To change the batteries in a Honeywell T4 thermostat:
1. Turn off the thermostat by selecting the "Off" mode.
2. Remove the thermostat from the wall by detaching it from the backing plate.
3. Locate and remove the two AA batteries from the back of the thermostat.
4. Check the battery terminals for any corrosion and clean them with a Q-tip and isopropyl alcohol if needed.
5. Insert new AA batteries, ensuring correct polarity.
6. Reattach the thermostat to the wall plate.
7. Turn the thermostat back on and ensure it functions properly.
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I want to set on manual only too switch on and off.
To set the Honeywell T4 thermostat to manual mode (turning the schedule off and following a single adjustable temperature), follow these steps:
1. Press the ▲ or ▼ button to select the schedule menu and press OK.
2. Press the ▲ or ▼ button to select OFF and press OK.
3. Press the ▲ or ▼ button to adjust the permanent temperature.
4. To revert to the schedule mode, repeat the steps and choose ON instead.
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