Fridge thermostat wiring ?

[Chris51]

Just bought a thermostat as mentioned on here a while ago but no instructions as to where to wire it or where the stat connected..on my 3 way

 

[Chris51]

Sorry pressed button too early...the stat is to operate a fan on my 3 way fridge when it gets too hot. Only instructions are in Chinese. I think the stat is wired to 1 and 2 and power to 5 and 6 but going through the fan ??

 

[Richard n Ann]

+12v (or live if mains fan) Power into 1 and out of 2 to fan.

12v power supply to 3 & 4. don't know polarity

NTC Sensor into 5 & 6

 

[Lenny HB]

Fan live & +12v to 1 & 2, Power to 3 & 4 thermostat to 5 & 6.

Edit beaten by Richard.

 

[Two on Tour]

Please post a link to where you bought this unit so we can have a look at what you have bought as your unit only has one set of relay terminal, so is this unit to control heating or cooling. The heating and cooling modes work in different ways.
If you had bought the one I use then I can explain the wiring up of the unit and the programming which is straight forward when you have worked it out plus it's in english.

^{_{Subscribers  do not see these advertisements}}

 

[DBK]

Just in case it isn't clear, 1 & 2 are just a set of contacts which presumably close when the set temperature is reached. As mentioned, the problem is it isn't clear what the polarity is for the power supply going into 3. If we assume 3 is positive (it may not be) then connect 3 to 2 with a short loop of wire then connect 1 with the positive fan cable and connect the negative from the fan to 4. Obviously, 3 and 4 will also be connected to the 12v power supply.

 

[Richard n Ann]

Here you go ?... A 12v fan diagram.

 

[jollyrodger]

This any help ?


I fitted one in mine a year or so back ,with 3 fans keeps fridge ideal temp for me .
Can't find instructions

I know not 12v

 

[Two on Tour]

All of this type of 12v units I have used are not polarity sensitive on the 12v input terminals.

 

[namwaldog]

From your first image, model is mh1210a.

Google this and you are presented with several images, YouTube vids etc.

Looks like there are several versions by the last letter of the model number.

Broken Link Removed:

^{_{Subscribers  do not see these advertisements}}

 

[jollyrodger]

Bad link ?
But pdf on www.biopowered.co.uk
WH7016C Thermostat Product Manual

 

[Chris51]

From your first image, model is mh1210a.

Google this and you are presented with several images, YouTube vids etc.

Looks like there are several versions by the last letter of the model number.

Broken Link Removed:

Yes its MH1210a...Power dc 24v.

 

[Chris51]

From your first image, model is mh1210a.

Google this and you are presented with several images, YouTube vids etc.

Looks like there are several versions by the last letter of the model number.

Broken Link Removed:

Got that now but where does the "probe" go /fix ?

 

[Lenny HB]

Got that now but where does the "probe" go /fix ?

5 & 6

 

[namwaldog]

Off the top of my head, I would reply this...

(a) If there was a separate 'probe' supplied, site it at the same place as the existing temperature probe in your fridge.

(b) If no probe supplied, take tails from the leads connected to the existing temperature probe.

I'm not sure at all though?

Edit... Just found this online. Not sure if it helps.

MH1210A Temperature Controller – da-Share

www.da-share.com

^{_{Subscribers  do not see these advertisements}}

 

[Chris51]

What temp figures for best settings?