Maker Pro
Maker Pro

Wall heater thermostat

Dilyhacky

Apr 19, 2017
3
Joined
Apr 19, 2017
Messages
3
Hello all, I'm trying to find a solution for Nobo Creda wall heater. In the uploaded images there are 2 types of thermostats. The one on the left is the new type that goes up to 30 degrees and the one on the right is the old type that goes only up to 24 degrees. What I need help with, is which electronic component on the old thermostat do I have to replace in order to go up to 30 degrees as well. I'm asking because the new type is too expensive. I tried to compare the components on them but they look like having the same values, capacitor, resistor etc.
 

Attachments

  • 20170416_115245.jpg
    20170416_115245.jpg
    570.3 KB · Views: 134
  • 20170416_115357.jpg
    20170416_115357.jpg
    583.9 KB · Views: 132
  • 20170416_115408.jpg
    20170416_115408.jpg
    578.4 KB · Views: 129

Tha fios agaibh

Aug 11, 2014
2,241
Joined
Aug 11, 2014
Messages
2,241
I see different models with different terminals, but I don't see a need to change or alter any components. You just need to match up your wiring to related terminals provided they match specs.
 
Last edited:

Dilyhacky

Apr 19, 2017
3
Joined
Apr 19, 2017
Messages
3
The terminals are the same, they match, the new type is the replacement part given by manufacturer. The reason why the old thermostat has 2 extra terminals is because it has also a permanent live to maintain a pre-set temperature even if the heater is off.
 

Externet

Aug 24, 2009
839
Joined
Aug 24, 2009
Messages
839
Look at the application notes and data sheet of the integrated circuit in order to properly modify the older to your requierements. If that is possible.
 

Tha fios agaibh

Aug 11, 2014
2,241
Joined
Aug 11, 2014
Messages
2,241
Why modify anything? If old thermostat was set to 16° it will run until it reaches 16° AND the new one will also shut off at 16° regardless of what the maximum temp is.

What's the problem?
 
Last edited:

Dilyhacky

Apr 19, 2017
3
Joined
Apr 19, 2017
Messages
3
For the new type that goes up to 30 degrees the IC markings are:
T118 T2117 24701-01

The IC from the old thermostat:
T314 T2117 37801-01

I tried to search for datasheet, but I couldn't find anything matching. I found some T2117 but the pins on datasheet don't match with the pins on the board, for example the ground on datasheet is pin 7 and the ground on the board is connected to another one.
 

Attachments

  • 20170421_100148.jpg
    20170421_100148.jpg
    165.2 KB · Views: 130
  • 20170421_100155.jpg
    20170421_100155.jpg
    154.5 KB · Views: 112

Alec_t

Jul 7, 2015
3,250
Joined
Jul 7, 2015
Messages
3,250
Why would you want to set the stat above 24C?
 
Top