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Manual Honeywell DT90E Thermostat

Name: Honeywell DT90E Thermostat
Brand: Honeywell
SKU: DT90E
Rating: 29 (58 reviews)

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Manual

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

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▲

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

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

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 časový

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

5 s

1,2,3,4....,24hr

HC = 1

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

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

°C

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

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Join the conversation about this product

Here you can share what you think about the Honeywell DT90E Thermostat. If you have a question, first carefully read the manual. Requesting a manual can be done by using our contact form.

JEANNE ROUSSY 22-10-2020
I cannot or do not know how to adjust the temperature. Nothing works . I ask for 18 degrees and there are 23 in the room and the boiler constantly restarts the heating. No flame logo appears on the screen when the boiler fires

reply | This was helpful (83) (Translated by Google)

Don Jones 14-10-2019
the Manual is not user friendly, very confusing, why have 10 different languages? I wanted to increase the room temperature, but just couldn't find how to do it, HONEYWELL!!!!!!!!??????

reply | This was helpful (30)

Raymonde LAFEUILLE 05-02-2021
The room temperature displayed on the screen does not correspond to the actual temperature in the room. What should be done

reply | This was helpful (28) (Translated by Google)

Denis LIONNET 29-10-2019
Inability to switch from cooling mode to heating mode.

reply | This was helpful (21) (Translated by Google)

jaber 04-04-2019
how to change honeywell pc / abs pilsner 50033654-001

reply | This was helpful (19) (Translated by Google)

Joly 12-11-2021
Hello, very disappointed with my purchase, a thermostat which is triggered often even when the temperature to ask is good. When I ask for twenty it goes on and off at least 10 times before it reaches the temperature. I am afraid for my consumption because the boiler keeps switching on. Please tell me what. Because my heating engineer does not know more than I do. Thank you

reply | This was helpful (13) Read more (Translated by Google)

viviline 30-11-2021
exactly same problem. my boiler goes on continuously and the temperature does not rise

This was helpful (8) (Translated by Google)

Fernando 05-12-2020
The temperature of 18.5 appears to me. heating mode. I change it to 20º but it returns to 18.5º. as I set it to 20º

reply | This was helpful (12) Read more (Translated by Google)

carmen 12-01-2021
The same thing happens to me and I don't know what to do

This was helpful (4) (Translated by Google)

Lorraine Serieux 25-10-2021
Hello I’ve just changed the batteries in my dt90 thermostat and the display has gone. Please advise

reply | This was helpful (9)

Freddy Damen damenfreddy@ 18-11-2019
Our thermostats in the bedroom and in the dressing room make a disturbing tapping sound when they switch on or off. Can this be undone somehow? Regards Freddy Damen

reply | This was helpful (4) (Translated by Google)

Keith A 10-11-2021
I wish to connect the DT90E stat to a Honeywell Wiring Centre. Terminals A and B connect to which terminals 1, 2, 3 please?

reply | This was helpful (4)

Jaclyn Davis 03-03-2022
I pressed wrong buttons and can't get heat to come on. It's stuck on eco. Have tried taking batteries out but no joy. Instructions on how to reset(there is no reset button) are poor.

reply | This was helpful (3)

WATIN 12-04-2020
CANCEL TODAY'S CLAIM FOR RELAIS DT92E aw48free.fr tel 07 77 73 66 36

reply | This was helpful (2) (Translated by Google)

Simon Kaffel 27-03-2024
Just come back from holiday and the thermostat doesn’t appear to be working. Have changed the batteries but the display isn’t on. Any advice please?

reply | This was helpful (0)

More about this manual

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Specifications

Brand	Honeywell
Model	DT90E
Category	Thermostats
File type	PDF
File size	0.73 MB

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Frequently Asked Questions about Honeywell DT90E Thermostat

Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.

What is the dead zone of a thermostat? Verified

Many modern thermostats have a dead zone. If the temperature deviates less than 4°C from the set temperature, the system will not heat or cool. This so called dead zone of the thermostat prevents the system from turning on and off too often, saving energy.

This was helpful (1587) Read more

What is the best place to mount a thermostat? Verified

The best place for a thermostat is approximately 1,5 meter above the ground. Never place the thermostat nead a radiator or other heat emitting equipment or in direct sunlight. Choose a room that is used often. In most cases this is the living room.

This was helpful (990) Read more