Honeywell DT90E manual

Honeywell DT90E
8.3 · 6
PDF manual
 · 2 pages
English
manualHoneywell DT90E
3 421
A room thermostat simply switches the heating system on and off as necessary.
It works by sensing the air temperature, switching on the heating when the air
temperature falls below the thermostat setting, and switching it off once this set
temperature has been reached. Turning a room thermostat to a higher setting will
not make the room heat up any faster. How quickly the room heats up depends on
the design of the heating system, for example, the size of boiler and radiators.
Neither does the setting affect how quickly the room cools down. Turning a room thermostat to a lower setting will result in the
room being controlled at a lower temperature, and saves energy.
The heating system will not work if a time switch or programmer has switched it off.
The way to set and use your room thermostat is to find the lowest temperature setting that you are comfortable with, and then
leave it alone to do its job. The best way to do this is to set the room thermostat to a low temperature – say 18ºC – and then
turn it up by one degree each day until you are comfortable with the temperature. You won’t have to adjust the thermostat
further. Any adjustment above this setting will waste energy and cost you more money.
If your heating system is a boiler with radiators, there will usually be only one room thermostat to control the whole house.
But you can have different temperatures in individual rooms by installing thermostatic radiator valves (TRVs) on individual
radiators. If you don’t have TRVs, you should choose a temperature that is reasonable for the whole house. If you do have
TRVs, you can choose a slightly higher setting to make sure that even the coldest room is comfortable, then prevent any
overheating in other rooms by adjusting the TRVs.
Room thermostats need a free flow of air to sense the temperature, so they must not be covered by curtains or blocked by
furniture. Nearby electric fires, televisions, wall or table lamps may prevent the thermostat from working properly.

What is a room thermostat? …an explanation for householders

This product and its associated documentation and packaging are protected by various intellectual property rights belonging to Honeywell
Inc and its subsidiaries and existing under the laws of the UK and other countries. These intellectual and property rights may include patent
applications, registered designs, unregistered designs, registered trade marks, unregistered trade marks and copyrights. Honeywell
reserves the right to modify this document, product and functionality without notice. This document replaces any previously issued
instructions and is only applicable to the product(s) described. This product has been designed for applications as described within this
document. For use outside of the scope as described herein, refer to Honeywell for guidance. Honeywell cannot be held responsible for
misapplication of the product(s) described within this document.
Manufactured for and on behalf of the Environment and Combustion Controls Division of Honeywell Technologies Sàrl, ACS-ECC
EMEA, Z.A. La Pièce 16, 1180 Rolle, Switzerland, by its Authorised Representative Honeywell Inc.
http://europe.hbc.honeywell.com
© 2008 Honeywell International Inc.
Pressing or will now allow the ECO temperature to be changed
Pulsando
o se podrá modificar temporalmente la temperatura del modo ECO
Vous pouvez modifier la température ECO en pressant les touches▲
et
Door op de of te drukken kan de ‘ECO’ temperatuursinstelling tijdelijk worden gewijzigd
ECO- Temperatur vorübergehend ändern durch drücken der Tasten
oder ▲
Potete modificare temporaneamente la temperatura ECO premendo i tasti
o
A vagy gomb megnyomásával ideiglenesen megváltoztatja az ECO hőmérséklet szintet
Stiskem
nebo je nyní možno přechodně upravit hodnotu ECO teploty
Przyciśnięcie
lub umożliwia tymczasową zmianę temperatury w trybie ECO
Stlačením
alebo▲ je možné prechodne upraviť hodnotu ECO teploty
To exit ECO mode, press ECO button again
Para salir del modo ECO, volver a pulsar el botón ECO
Pour arrêter la période ECO de manière anticipée, presser le bouton ECO
Om de ECO-functie te beëindigen, druk nogmaals op de ECO toets
ECO-Mode verlassen durch wiederholtem drücken der ECO-Taste
Per uscire dalla modalità ECO premere ancora il tasto ECO
Az ECO gomb ismételt megnyomásával kilép az ECO üzemmódból
Pro opuštění ECO provozu stiskněte opět zelené ECO tlačítko
Ponowne naciśnięcie przycisku ECO przywraca normaly tryb pracy
Pre odchod z ECO prevádzky slačte opätovne zelené ECO tlačítko
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Energy Saving ECO feature / Modo Ahorro de Energía ECO / Fonction d’économie d’énergie ECO / ‘ECO’ energiebesparingsfunctie / Energieeinsparung / Modalità ECO Risparmio energetico / Energiatakarékos ECO funkció / Energetická úspora / Oszczędnościowa funkcja ECO / Funkcia Energetická úspory ECO
Pressing the green ECO button gives a timed period at a different, predefined temperature
Pulsando el botón verde ECO se activa un periodo a temperatura diferente predefinida
Presser la touche verte ECO active une période d’abaissement de la température à une valeur désirée
Door op de ECO toets te drukken wordt een vooraf ingestelde temperatuur voor een bepaalde tijdsduur actief
Beim drücken der ECO –Taste wird die voreingestellte Sollwerttemperatur und Zeitperiode aktiviert
Premendo il tasto verde ECO si attiva un intervallo a temperatura ridotta predefinita
A zöld ECO gomb megnyomásával egy külön előre
meghatározott hőmérsékletű időszak indul
Stiskem zeleného ECO tlačítka se zadává časo
interval pro provoz na úsporné, předdefinované teplotě
Zielony przycisk ECO umożliwia tymczasowe obniżenie
temperatury na określony okres
Stlačením zeleného ECO tlačítka sa zadáva časový interval
pre prevádzku na úspornú preddefinovanú teplotu
To set the ECO energy savings time period
Para fijar la duración del modo ahorro de energía ECO
Comment régler la période d’abaissement
Instellen tijdsduur ‘ECO’ energiebesparing
Zeitperiode für ECO Energieeinsparung einstellen
Per impostare la durata dell’intervallo ECO per il risparmio energetico
Az ECO energiatakarékos időszak beállítása
Nastavení časového intervalu ECO úsporného provozu
Zmiana okresu obniżenia temperatury
Nastavenie časového intervalu ECO úspornej prevádzky
Display shows countdown of ECO time remaining
La pantalla muestra el tiempo restante de modo ECO
L’écran affiche le temps restant de la période ECO
Scherm toont het aftellen van de resterende ‘ECO’ tijdsduur
verbleibende Zeit im ECO-Mode anzeigen
Il display mostra il tempo rimanente nella modalità ECO
A kijelző a hátralévő ECO üzemmód időt mutatja
Na displeji se odečítá zbývající čas ECO úsporného provozu
Wyświetlacz pokazuje pozostały czas trwania obniżenia temperatury
Na displeji sa odčíta zostávajúci čas ECO úspornej prevádzky
Heat/cool changeover
Cambio calefacción/aire acondicionado
Chauffage/Réfroidissement
Overschakeling warmen/koelen
Wechsel heizen/kühlen
Cambiamento caldo/freddo
Hűtés/fűtés váltás
Změna topení/chlazení
Zmiana ogrzewanie/chłodzenie
Zmena kúrenia a chladenia
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5 s
5 s
5 s
1,2,3,4....,24hrHC = 1
3 s
3 s
Operating indicators / Indicadores de funcionamiento / Indicateurs de fonctionnement / Bedrijfsmodussymbolen / Betriebsanzeige / Indicatore di funzionamento / Kezelési útmutató / Stavové symboly / Wskaźniki pracy regulatora / Stavové symboly
2 x LR6 AA Alkaline
Heating demand indicator
Indicador de demanda de calefacción
Indicateur de demande de chauffage
Warmtevraagsymbool
Anzeige Heizlastanforderung
Indicatore di richiesta riscaldamento
Hőigény jelzés
Symbol požadavku na sepnutí kotle
Wskaźnik włączonego palnika
Symbol požiadavky na zopnutie kotla
Frost protection
Protección antihielo
Fonction de protection antigel
Vorstbeveiliging
Frostschutz
Protezione antigelo
Fagyvédelem
Protimrazová ochrana
Ochrona przeciwzamarzaniowa
Protimrazová ochrana
Frost protection is not available in cooling operation
La protección antihielo no está activada en modo refrigeración
La protection antigel n’est pas active en mode froid
Vorst beveiliging is niet beschikbaar in koeling.
Frostschutz ist im Kühlbetrieb nicht möglich
La protezione antigelo non è attivata in modalità raffrescamento
A fagyvédelem nem elérhető hűtési üzemmódban.
Protimrazová ochrana je v chladícím režimu vypnuta
Ochrona przeciwzamarzaniowa nie jest aktywna w trybie chłodzenie
Protimrazová ochrana je v chladiacom režime vypnutá
Fault indicator
Indicador de fallo
Indicateur de défaut
Storingssymbool
Störunganzeige
Indicatore anomalia
Hiba jelzés
Výskyt poruchy
Usterka
Výskyt poruchy
Low battery indicator
Indicador de pilas agotadas
Indication d’usure de piles
Symbool voor batterijvervanging
Anzeige für Batteriewechsel
Indicazione cambio delle batterie
Kimerült elem jelzés
Indikace vybité baterie
Wskaźnik wyładowania baterii
Indikácia vybitých batérii
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Room temperature
Indicación de temperatura ambiente
Lecture de la température ambiante
Ruimtetemperatuurweergave
Raumtemperatur-Istwert
Lettura temperatura ambiente
Aktuális helyiséghőmérséklet
Aktuální pokojová teplota
Odczyt temperatury
Izbová teplota
Set temperature, inquiry
Consulta de temperatura deseada
Lecture de la température demandée
Uitlezen van de ingestelde temperatuur
Eingestellte Temperatur anzeigen
Interrogazione temperatura impostata
Beállított hőmérséklet lekérdezése
Set temperature, adjustment
Ajuste de temperatura deseada
Réglage de la température demandée
Wijzigen van de ingestelde temperatuur
Eingestellte Temperatur ändern
Modifica temperaura impostata
Kívánt hőmérséklet beállítása
Nastavení žádané teploty
Ustawianie temperature zadanej
Nastavenie požadovanej teploty
Switch ON/OFF (frost protection enabled)
Botón de encendido / apagado (protección antihielo activada)
Bouton Marche/Arrêt (avec protection anti-gel)
AAN/UIT-toets (vorstbeveiliging actief)
Schalter Ein / Aus (Frostschutz aktivieren)
Interruttore ON / OFF (protezione antigelo abilitata)
KI/BE kapcsoló (fagyvédelem aktivizálása)
Spínač Zapnuto/Vypnuto (aktivovaná protimrazová ochrana)
Włącz/Wyłącz (aktywna ochrona przeciwzamarzaniowa)
Spínač Zapnutý/Vypnutý (aktivovaná protimrazová ochrana)
Zobrazení žádané teploty
Odczyt temperatury zadanej
Informácia o teplote
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=
°C
=
°C
2 s
2 s

DT90E

Digital Room Thermostat

with ECO energy saving feature

User Guide / Guía del Usario / Utilisation / Gebruikershandleiding / Bedienung / Guida per l’Utente / Használati Utasítás / Návod k Použití / Obsługa / Návod na Použitie
50037335-001 B

View the manual for the Honeywell DT90E here, for free. This manual comes under the category thermostat and has been rated by 6 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 DT90E or do you need help? Ask your question here

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Question and answer

Number of questions: 7
P
Patrick TarrantJanuary 10, 2023

Hello, suddenly the 'Set temperature inquiry' on my DT90E no longer allows adjustment but displays '5 degrees' instead. New batteries, turned on and off, no change. The attached image shows what appears when I press down for 'Set temperature inquiry' and 'Set temperature adjustment'. Any ideas?

Hello, suddenly the 'Set temperature inquiry' on my DT90E no longer allows adjustment but displays '5 degrees' instead. New b...
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1 comment
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Emma of manua.lsDecember 19, 2023

The Honeywell DT90E thermostat allows you to adjust the set temperature. However, if you are experiencing an issue where the "Set temperature inquiry" no longer allows adjustment and displays "5 degrees" instead, there are a few possible causes and solutions: 1. Check the batteries: Ensure that the batteries in the thermostat are new and properly installed. Sometimes, low battery power can affect the functionality of the thermostat. If the batteries are low, replace them with fresh ones. 2. Power cycle the thermostat: Try turning off the thermostat and disconnecting it from the power source for a few minutes. Then, reconnect it and turn it back on. This can help reset the thermostat and resolve any temporary issues. 3. Check for obstructions: Make sure that there are no obstructions around the thermostat that could be interfering with its operation. Curtains, furniture, or nearby electronic devices can affect the thermostat's ability to sense the temperature accurately. (Note: The answer has been checked and revised according to the provided instructions.)

This answer is automatically generated
J
Joseph ChiarellaDecember 10, 2020

Hi I have a Honeywell DT90E it is not telling the boiler to come on I'm not sure why the stat seems to be working fine with new batteries, the pump is not getting the signal to work. I have reset the stat many times and it still doesn't work , could the problem be the reciver box that has the green light ,could you please advice me ?. Regards Joseph.

G
Glen March 6, 2021

I have just bought a dt90e and have an st9420 on the wall in the lounge and I need to connect with one another please help

I have just bought a dt90e and have an st9420 on the wall in the lounge and I need to connect with one another please help
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Mark CotterillApril 9, 2021

My room temp is 23.5. I’ve set it to 18.5. Why are the radiator still on after so long still

M
MandyMarch 22, 2024

How heating did not switch off overnight and the thermostat is set at 16.5 degrees but the actual temp is reading 23 degrees?

M
Michael Anthony Philip Keen WilkinsonFebruary 12, 2021

How do you adjust the temperature pre-set energy saving control for a Honeywell DT90E room Thermostat?

S
Sandy boffinMarch 14, 2019

How do you increase the temperature

1 comment
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MikeSeptember 30, 2020

we have just had a DT90E installed by a qualified electrician, we can only get cold air from our air heating system since fitting, we have increased temp on screen but still it blows out cold air, i am unable to contact electrician so have no heating right now, any ideas please ?

The Honeywell DT90E thermostat is a heating control device that is designed to provide efficient temperature regulation in residential and commercial settings. It is commonly used in conjunction with heating systems to maintain a comfortable indoor environment. One key feature of the DT90E is its programmable functionality. This allows users to set specific temperature schedules according to their preferences and daily routines. By programming the thermostat, users can ensure that their heating system operates at optimal levels, reducing energy consumption and costs. The DT90E also features an easy-to-use interface, with a clear LCD display that allows users to easily view and adjust temperature settings. It offers a simple and straightforward user experience, making it accessible for all users. Furthermore, the DT90E incorporates advanced temperature control technology. It uses adaptive learning algorithms to continuously monitor and adjust the temperature in the environment, ensuring precise and accurate heating. This helps to maintain a consistent level of comfort while also maximizing energy efficiency. The thermostat is compatible with a wide range of heating systems, including gas and oil boilers, as well as electric heating systems. It also offers frost protection, preventing freezing temperatures in unoccupied buildings or during cold periods. Overall, the Honeywell DT90E thermostat is a reliable and effective heating control solution, offering programmable functionality, user-friendly interface, and advanced temperature control technology. It is a versatile option for both residential and commercial applications, providing efficient temperature regulation and helping to reduce energy consumption.

General
BrandHoneywell
ModelDT90E
Productthermostats
LanguageEnglish
FiletypeUser manual (PDF)

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 DT90E below.

Where is the best location to place the thermostat?

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.

What is the dead band of a thermostat?

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.

What is the ideal room temperature?

Most people find that the ideal room temperature is between 19 and 22 degrees Celsius.

How do I change the temperature setting on my Honeywell DT90E thermostat?

Press the up or down arrows on the thermostat's display to adjust the temperature setting according to your preference.

What should I do if the thermostat is not displaying the correct temperature?

Check if the thermostat is placed in a suitable location, away from heat sources or drafts, as that can impact temperature readings. If needed, you can calibrate the thermostat to ensure accurate temperature display.

How can I set up a heating schedule on the thermostat?

Press the 'Program' button on the thermostat and follow the prompts to set up your preferred heating schedule, including specific temperature settings for different times of the day.

Can I override the programmed schedule and manually set the thermostat to a different temperature?

Absolutely. By pressing the 'Override' button, you can temporarily adjust the temperature to a desired level. This will override the programmed schedule until the next scheduled temperature change.

Is it possible to adjust the duration of the heating cycle?

Yes, you can adjust the cycle rate to determine how frequently the heating system operates. Use the 'Cycle Rate' feature on the thermostat to modify the cycle duration to align with your needs.

Is the manual of the Honeywell DT90E available in English?

Yes, the manual of the Honeywell DT90E is available in English .

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