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Cette vue éclatée n'est pas un tutoriel de réparation. Pour réparer votre Tado Smart Radiator Thermostat v3 Plus, utilisez notre manuel de réparation.

  1. Tado Smart Radiator Thermostat v3 Plus Teardown, Dismantling the Basics: étape 1, image 1 de 2 Tado Smart Radiator Thermostat v3 Plus Teardown, Dismantling the Basics: étape 1, image 2 de 2
    • This is one of those thermostats.

    • The first disassembly step is quite straight forward as it's the way to pair and to swap the batteries.

  2. Tado Smart Radiator Thermostat v3 Plus Teardown, Getting into the Shell: étape 2, image 1 de 3 Tado Smart Radiator Thermostat v3 Plus Teardown, Getting into the Shell: étape 2, image 2 de 3 Tado Smart Radiator Thermostat v3 Plus Teardown, Getting into the Shell: étape 2, image 3 de 3
    • Removing the cover which has the "tado" logo embossed is the first step to getting into the thermostat.

    • It is secured with 3 clips.

    • One right next to the little opening for the temperature sensor .

    • Two other on the opposite side.

    • Once you removed the cover you can easily pry off the serrated ring. This serration is connected to a little cogwheel which transfers the turning motion to an electrical signal for setting the temperature.

  3. Tado Smart Radiator Thermostat v3 Plus Teardown, Removing the Main Electronics: étape 3, image 1 de 1
    • The single PCB is secured with 2 cross head screws and a ribbon cable which leads to the "display".

    • By lifting the tightening cover of the ribbon cable you can remove it.

    • By removing the 2 standard screws you can finally completely remove the PCB from the assembly.

    • Pay attention to the before mentioned cogwheel. It will also fall out.

    • Additionally there are two plastic pins which transfer button pushes from to the PCB. More for that to come when looking at the PCBs.

  4. Tado Smart Radiator Thermostat v3 Plus Teardown, A Quick Look at the Front of the PCB: étape 4, image 1 de 2 Tado Smart Radiator Thermostat v3 Plus Teardown, A Quick Look at the Front of the PCB: étape 4, image 2 de 2
    • On this side of the PCB you can see several important objects.

    • The red section is the sub-GHz antenna which is the main communication antenna to the base station.

    • The blue section is where the cogwheel for setting the temperature is positioned.

    • The T1317 chip (green) I could not assign to anything. If sb. has an idea what it is, please let me know.

    • The N52832 IC (yellow) is a low power Bluetooth transceiver which is only used by the Tado radiator thermostat in app mode.

    The chip with the hole on the right side of the PCB is the SHTC3 temperature sensor

    Sebastian Charlak - Réponse

    What is meant by “App mode”? I’ve found all tado devices, including the bridge, include Bluetooth support but Tado litsts that no where on their website/in their app. What is it?!

    Thomas Verschoof - Réponse

    T1317 is a DCDC converter from linear technology (LT1317, 2-Cell to 3.3V converter)

    https://pdf1.alldatasheet.com/datasheet-...

    P.M. - Réponse

    I think the T1317 is really the 3730, and is an LED matrix driver: https://lumissil.com/assets/pdf/core/IS3...

    Adam Labbe - Réponse

  5. Tado Smart Radiator Thermostat v3 Plus Teardown, A Quick Look at the Back of the PCB: étape 5, image 1 de 2 Tado Smart Radiator Thermostat v3 Plus Teardown, A Quick Look at the Back of the PCB: étape 5, image 2 de 2
    • On this side of the PCB you can see several more important objects:

    • In black you see both AA battery connections.

    • The first button (yellow) is the button which is pressed when you screw lock the adapter plate back into the main unit when pairing or changing the batteries. It indicates to the device that it is mounted to a radiator.

    • The second button (teal) is the pairing button.

    • The RF antenna (red)

    • The antenna already mentioned is connected to the CC110L IC (magenta), which is a sub-GHz transceiver.

    • In the last step on the other side of the PCB we saw a Bluetooth IC. On this side of the PCB we can also find the antenna for it (green).

  6. Tado Smart Radiator Thermostat v3 Plus Teardown, Dismantling the Rest: étape 6, image 1 de 3 Tado Smart Radiator Thermostat v3 Plus Teardown, Dismantling the Rest: étape 6, image 2 de 3 Tado Smart Radiator Thermostat v3 Plus Teardown, Dismantling the Rest: étape 6, image 3 de 3
    • The shell consists of two parts. The other one is painted black inside to block the light from the self-made LED display. The inner one houses all the rest.

    • To seperate the two, you have to remove two opposite clips by driving sth. between them - these might be toothpicks, but also can be bits like in this case.

    • When you spread the clips apart, you can slide the other shell off - revealing the self-made LED display and its cover.

  7. Tado Smart Radiator Thermostat v3 Plus Teardown, The Self-Made Display: étape 7, image 1 de 3 Tado Smart Radiator Thermostat v3 Plus Teardown, The Self-Made Display: étape 7, image 2 de 3 Tado Smart Radiator Thermostat v3 Plus Teardown, The Self-Made Display: étape 7, image 3 de 3
    • Here you can see how the managed to implement a bent "display". The black part is made out of rubber, blocking all the light of the LEDs in the ribbon cable behind.

  8. Tado Smart Radiator Thermostat v3 Plus Teardown, Removing the Motor: étape 8, image 1 de 3 Tado Smart Radiator Thermostat v3 Plus Teardown, Removing the Motor: étape 8, image 2 de 3 Tado Smart Radiator Thermostat v3 Plus Teardown, Removing the Motor: étape 8, image 3 de 3
    • Removal of the motor is quite simple.

    • Behind the sticker there are two more screws, securing the 25BYJ412-56 motor.

    • Remove them and the motor including the ribbon cable and ribbon-display falls out.

    is there a number on the motor?

    Swen Bischof - Réponse

    you can actually see it a few pictures before at “dismantelling the rest": it's a relatively uncommon 25byj412-56

    Dennis -

    Sorry, just realized you asked a bit different thing: There were no more markings on the motor other than the one showed in the picture

    Dennis -

    The black pin that rotates down the motor shaft to plunge the pin on the radiator valve to call for heat, is this fixable?. I don’t know how but mine has come off the motor shaft all together, it’s not damaged. I’m wondering if my house mate removed the thermostat and the pin extended off the shaft when the app schedule requested heat.

    eugenerobinson - Réponse

    Hi there, I have opened the thermostat but under the sticker with the QR code there are no screws but two small rectangular openings. At mine the black thing that presses the valve in and out is stuck “with the motor”

    Anyone any idea how to open or unblock?

    Valve is always a bit open so although it’s not supposed to heat it’s heating.

    Thanks

    Hannes

    hmuhri - Réponse

    I think you have a v1 like mine. Did you manage to get the motor out?

    Jon W -

  9. Tado Smart Radiator Thermostat v3 Plus Teardown, The Full Disassembly: étape 9, image 1 de 1
    • And that is it, the completly disassembled tado Smart Radiator Thermostat v3+.

Dennis

Membre depuis le 01/11/20

335 Réputation

2 tutoriels rédigés

17 commentaires

Hi, I have several of these and I’m looking at ways to make them more usable as they should measure the temperature of the room, not the radiator. I have a couple of questions:

- what kind of temperature sensor does it use? Can it be desoldered and moved away from the valve for a better reading

- can the motor be disconnected? If so, does the valve still work as an external temperature sensor when placed in the same room as another valve?

Jacopo Scarpellini - Réponse

Hi Jacopo, I have exactly the same question. I want to use the Tado to heat up my pool and want a probe inside of the water. Did you manage to find the temperature sensor? Cheers, Dennis

Dennis Martens -

I have the same question, similar to Dennis I would like to use Tado to heat my hot tub and would like to feed my own temperature reading into the device (albeit offset by 20 degrees). Would be great to understand how the temperature sensing works.

Jason Conway -

this is not an electronics feedback loop. It’s like a normal thermostatic head, with the wax feedback, the electronics just inputs the set point, like you would do by hand twisting the knob. Of course, you could use the setpoint for feedback, but these are plastic gears, you can’t use them too much.

Nicolas Raynaud -

Hi
I suggest sign-in at https://ifttt.com so you can use another IoT device to control temperature an this one would send the order through IFTTT

Also install Wireless Temperature Sensor in Master-Slave settings with the Tado Smart Radiator Thermostat

Jairo -

No, I haven’t attempted opening it

Jacopo Scarpellini - Réponse

I want to remove the motor but the design seems to have changed. On my model there are no screws behind the sticker, just two holes with a black plastic structure behind them. Any ideas how to get the motor out? Thanks in advance.

Graham Nixon - Réponse

The T1317 chip is probably the ISSI IS31FL3730 LED driver used for the LEDs on the flex PCB. On the front PCB photo it looks like pin 1 and 2 are an I2C bus, you can see the pull-up resistors close to these pins. The datasheet does however not mention the chip marking code.

ionicus - Réponse

I think the sensor is the square black thing above the blue box in the picture in step 4

Jacopo Scarpellini - Réponse

You’re right, it looks like a Sensirion SHTC3;

https://www.sensirion.com/fileadmin/user...

Jonathan -

Cool guide, I want to install one in a place where the wall is too close to the radiator to fit. So it seems that if I find a way to extend the flatcable and am willing to sacrifice the manual setting mechanism I can just remove the PCB solder some batteries to it and just keep it somewhere else and save about 2 cm?

Erik Wieldraaijer - Réponse

Hi,

I have questions regarding the rubber part (blocking all the light of the LEDs).

How is it fix inside the white cover ?

Could it be disassemble ?

How this part could be manufacture ?

Thanks for your help,

William BENESTEAU - Réponse

did you disassemble the motor any further? I'm interested what kind of gear train it uses to transform rotational into linear motion.

alfarme - Réponse

To improve signal, does anyone now how the antenna on the radiator stat could be made larger?

Pete S - Réponse

Making it larger probably just makes it not work anymore... You might be able disconnect it (scratch the trace) and then use a coaxial cable to connect an external antenna for 868 MHz. Instead it might already help to know how it is oriented in the knob so you can position it optimally.

Pieter Luteijn -

Hi
Where can I buy 25BYJ412-56 motor ?
I only have found it in AliExpress but minimal purchase is 10 units.
Thanks

Jairo - Réponse

Just wondering whether the author of this helpful article, or any one else, knows what size torx driver is needed to remove the two screws which hold the circuit board in place ?

hugbilly - Réponse

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