Tado X violating OpenTherm standard
mrkb_
✭
I want to warn customers with a Tado X. Tado is intentionally violating the OpenTherm standard, specifically manipulating values ID 016 (room temperature in degrees) and ID 024 (room temperature setpoint in degrees).
Instead of sending the real values to your heating system, they send a constant room temperature of 20 degrees and an arbitrary setpoint that is apparently designed to make your heating system to react faster. The only thing it does is make my system (Quatt hybrid heat pump) go crazy. It needs the actual values to control the system, not the Tado manipulated ones.
The OpenTherm Association mentions that Tado is certified and provides these two IDs: https://www.opentherm.eu/request-details/?post_ids=4925
I can confirm that they are not compliant with the standard any more.
Eveey firmware after 247.1 is affected, before that they adhered to the standard. Strangely, the V3+ does not have this behavior, and every other thermostat on the market seems to be able to implement the standard correctly.
The head of Customer Experience Jurian has confirmed to me that this is intentional and that they do not intend to change this.
Instead of sending the real values to your heating system, they send a constant room temperature of 20 degrees and an arbitrary setpoint that is apparently designed to make your heating system to react faster. The only thing it does is make my system (Quatt hybrid heat pump) go crazy. It needs the actual values to control the system, not the Tado manipulated ones.
The OpenTherm Association mentions that Tado is certified and provides these two IDs: https://www.opentherm.eu/request-details/?post_ids=4925
I can confirm that they are not compliant with the standard any more.
Eveey firmware after 247.1 is affected, before that they adhered to the standard. Strangely, the V3+ does not have this behavior, and every other thermostat on the market seems to be able to implement the standard correctly.
The head of Customer Experience Jurian has confirmed to me that this is intentional and that they do not intend to change this.
0
Reacties
-
That is bad news indeed. Thanks for sharing with us.1
-
Tado helpdesk can downgrade firmware to 247.1 but they cannot garantee that future automatic upgrades won´t affect the present firmware. For our system the downgrade was a hugh improvement. So I´m praying the next enforced upgrade is a long way off.
0 -
Same here. On 247.1 but really disappointed that I probably won't be able to get future upgrades...0
-
Zou heel mooi zijn.
@
Is het bekend wanneer dat gebeurt zodat ik het systeem in de gaten kan houden? Misschien hier een aankondiging?
0 -
Dat klinkt goed @Emcee, dank voor de reactie!0
-
@emcee
Which firmware nr. will this update have?
0 -
My thermostat was replaced due to a temperature sensor issue. My new thermostat has firmware 251.3 which still has the issue.0
-
Here I see firmware 251.4 and so far no problems.0
-
Unfortunately, this new firmware 251.4 doesn´t work in our situation. The temperature in one room (with a wireless temperature sensor) stayed 2 - 3 degrees below the setpoint for that room during the night.
0 -
@Emcee
Mijn Quatt Hybrid is vandaag geïnstalleerd en ik heb voor plm 800€ Tado X spullen ongeopend liggen. Ga ik ze terugsturen is nu de vraag voor mij.
Kun je meer info geven alsjeblieft?
Wanneer? Versie? Lost het de Tado X problemen met Quatt op?
Enorm bedankt!
Taupe0 -
Firmware 251.4 geeft weer de goede waarden voor ID 016 en ID 024 door.0
