Thema "Betreff: Heizthermostat 2 defekt" in Technische Probleme

Heizthermostat 2 defekt

Clever — Sat, 03 Oct 2026 10:16:26 GMT

Heizthermostat 2 Funktionsstörung Fehlermeldung Eo5. Das zweite schon diesen Monat. Habe alles versucht, Batterie raus Batterie rein, neu konfiguriert. Letzte Meldungen Motor wahrscheinlich defekt. Was nun!!! Mit freundlichen Grüßen Peter Clever

Betreff: Heizthermostat 2 defekt

Christopher — Sat, 03 Oct 2026 11:19:41 GMT

Wenn noch Garantie vorhanden ist, solltest du dich beim Support melden.

Re: Heizthermostat 2 defekt

Blacklord049 — Mon, 12 Oct 2026 08:29:10 GMT

Hi,

I have the same issue with one of my thermostat (code E05 with a message in SH app) but it's now 3 years old so I think the warranty can't apply. I tried many things but seeing that I won those during a contest I don't have any invoice to open a support ticket. I did everything I could: changing the batteries, calibrating without plugging to the valve, but the motor seems to randomly block.

Kind regards

Re: Heizthermostat 2 defekt

Ulrike — Mon, 12 Oct 2026 13:13:34 GMT

Hi @Blacklord049,

thank you for reaching out and sharing your issue with your thermostat.

Please contact our customer service team directly so we can look into this for you. When you submit your request, please make sure to include:

A brief description of the defect/issue you are experiencing.
A copy of your purchase invoice (this is very important to help us verify your case quickly).

Our team is very accommodating, and there is a good chance we can offer a goodwill solution for you.

Smart regards

Ulrike

Betreff: Heizthermostat 2 defekt

digitalbird — Sun, 18 Oct 2026 10:47:59 GMT

i have disassembled the unit like described here:

https://community.bosch-smarthome.com/t5/projekte-rest-api-und-co/ein-blick-ins-innere-des-heizkörper-thermostat-ii/m-p/58503#M637

Then disassemble also until the gearbox.

turn the gear for the stem manually until the stem has moved some milimeters outwards.

Assemble everything again. E05 dissapeared and adoption process works again.

Re: Heizthermostat 2 defekt

Blacklord049 — Wed, 21 Oct 2026 22:26:31 GMT

I just bought a new model. In fact the thermostat I got was won in a contest, 3 years ago, through the Alternate marketplace. Sadly I have no document for that, seeing it's not a purchase... The only thing I can give is the s/n.

In Belgium the warranty is only applicable for 2y and I didn't have any extension (again, it was a prize won during a contest)

After buying a new one I tried resetting the device and even removed the batteries for 2 days. Now when I put the batteries back, the motor is failing with another error code, as if it was stuck.