View the manual for the Honeywell DT90 here, for free. This manual comes under the category thermostat and has been rated by 29 people with an average of a 8.3. This manual is available in the following languages: English. Do you have a question about the Honeywell DT90 or do you need help? Ask your question here

The Honeywell DT90 is a thermostat that offers precise temperature control with an accuracy of 0.5 °C. Its LCD display allows for easy reading and adjustment of temperature settings. The thermostat operates on two 230V batteries, which are included in the package. With its compact dimensions of 90 mm in width, 27 mm in depth, and 92 mm in height, the Honeywell DT90 can fit into various spaces without taking up too much room. This makes it suitable for both residential and commercial settings. Although it does not have a memory function, the thermostat's simple interface and straightforward controls make it easy to set and maintain desired temperatures. Users can manually adjust the temperature according to their comfort level or energy-saving preferences. The Honeywell DT90 is designed to provide reliable performance and longevity. The premium materials used in its construction ensure durability, allowing the thermostat to withstand regular use and potential wear and tear. One notable feature of the Honeywell DT90 is its long battery life. With a lifespan of two years, users can enjoy extended use without worrying about constantly replacing the batteries. Regarding additional features, the Honeywell DT90 does not include a remote control. However, its compact size and user-friendly interface make it easy to operate directly on the device. Overall, the Honeywell DT90 is a compact and reliable thermostat that offers precise temperature control. With its durable construction, long battery life, and user-friendly design, it provides a practical solution for maintaining a comfortable indoor environment.
| Brand | Honeywell |
| Model | DT90 | DT90 |
| Product | thermostats |
| EAN | 5025121386128 |
| Language | English |
| Filetype | Manual (PDF) |
| Accuracy | 0.5 °C |
| Temperature range (T-T) | 5 - 35 °C |
| Memory function | No |
| Product colour | White |
| Display | LCD |
| Number of batteries supported | 2 |
| Battery voltage | 230 V |
| Battery life | 2 year(s) |
| Batteries included | Yes |
| Remote control included | No |
| Width | 90 mm |
| Depth | 27 mm |
| Height | 92 mm |
Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Honeywell DT90 below.
The best place for the thermostat is the room where you spend the most time, in many cases the living room or kitchen. Place the thermostat about one and a half metres above the floor, not in the sun and not on an outside wall.
If your thermostat has a dead band, your installation is, as it were, 'at rest'. The thermostat only switches on when, for example, the difference deviates more than 2˚C from the set room temperature.
Most people find that the ideal room temperature is between 19 and 22 degrees Celsius.
The Honeywell DT90 has a height of 92 mm.
The Honeywell DT90 has a width of 90 mm.
The Honeywell DT90 has a depth of 27 mm.
Yes, the manual of the Honeywell DT90 is available in English .
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Number of questions: 10The Honeywell DT90 thermostat sets the ambient temperature the same as the one I programmed for the boiler to start running, and it does not display the actual temperature in the environment at that moment. In other words, it shows the temperature I have chosen to start the boiler at rest.
This message has been automatically translatedMy Honeywell DT90 thermostat indicates that it is 28°C inside the house, but it is actually 19°C. What should I do, can it be adjusted?
This message has been automatically translatedWhich two terminals (1, 2, and 3) at the Honeywell Wiring Centre correspond to the A and B terminals of the DT90, please?
I have a DT92A and I do not know how to make the settings for the boiler to start less frequently.
DT90 thermostat, my screen has turned off, I have changed the batteries and it still remains off, although the heating is working. How can I fix it? Thank you.
I have changed the batteries of the thermostat and it is not working with the new ones. The screen does not turn on. Any solution?
This message has been automatically translatedHello, how do I connect the wires of the Honeywell DT90A thermostat? Can someone help me? Thank you.
We have just had the DTE90E Ecco Model intalled. It worked ok for first day, now i dont know if I've pressed the wrong buttons, but it now seems to take hours to reach the temperate I tried to set it at? I pressed up arrow to 18 degrees, but it then reverts back to 15.5. It has been at 15.5 for the past hour & a half. What do I hav to do, to make it reach 18 degrees?