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EQ7 instantaneous water heater

bajek

June 11, 2015 01:01 am

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Hello,

I wanted to know if you could install the instantaneous water heater of the EQ7 Plus or the EQ8, i.e. the V2 version, in the normal EQ7 L-Series.

bajek

June 11, 2015 11:00 am

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So I dismantled the instantaneous water heater and noticed that a small fuse fell out at the right switch which I marked with an arrow on the photo.

This should normally not fly out or?

Furthermore I have seen that the other two controllers have a solder insert. This is not present in the backup. So this is thus melted right?

Attached Image

HWS

June 30, 2015 05:30 pm

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Good evening,

if the thermal fuse flies out, then the electronics no longer regulate properly. Could be that the triac on the power board is short-circuited. I've had it before.

Greeting HWS

GlobalPlayer

July 30, 2015 07:58 pm

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Hi Bajek,
the fuse is not blown out either.
The pin and a small spiral spring (which is probably under your sofa now) are loosely under the ceramic - so always pay attention to them when removing them smile.gif
If the temperature of the heating rises above the trigger temperature of the fuse, the spring pushes the pin upwards through the fusible link and interrupts the contact.
If you can't find the spring you need a new fuse.
Here the data:
trip temperature is 206°C,
manufacturer is "Inter Control" and is called as single product "Minimelt"
Buerklin.en under art.no. 30G4420.

The other two elements on the rail are not fuses but thermostats by the way.

Greß, Alex


Guest

September 28, 2020 05:22 pm

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really now connect the 2 blue and good is the use of not such a nonsense is only money-making is only mass at plus is something else but at minus can connect the 2 blue has no effect on electronics

Tanner

October 08, 2020 08:50 pm

Unregistered

The fuse is one-time use fuse. It is connected with a soldering, when the current is above the limit, it melts and it is never reset. So dont try to find a spring etc.

I have found this thermostat-thermal link combination but I dint how to buy just one or two sad.gif

Here is the link of the product duomelt plus

https://www.intercontrol.de/en/control-technology/products/fixed-set-point/product-combination/161-441-duomelt-plus/

If you know how to buy or get it please let me know...