Immersion problem

[nick1967]

So my immersion heater isn’t working, it works two ways our biomass system can heat the immersion tank when the biomass is running.


That part works fine


It’s when the biomass is not running and we are using the immersion element to heat the water. At best I get Luke warm water.


This problem started after we introduced solar divert into the tank to assist with running costs. System was solic200


Ever since then we can’t seem to get a reliable supply of hot water.


If there is no sun to heat the water you are supposed to press the boost button on the solic, this is supposed to switch it over to mains electric and heat up the tank.


Anyway starting to ramble lol


Took out the element for a look. I AM NOT AN ELECTRICIAN LOL but competent mechanicaly minded.


I have tested the element resistance, see images from what I can gather this would indicate the element is okay.


There are two small holes in the casing witch I imagine are for maybe reading the resistance in the thermostat part of the unit ???


There is a power supply going to the element but why am I not getting hot water.

I will get a professional to have a look I just wanted to know if this was the correct way to test this element and if it was okay

250v 3kw


https://i.imgur.com/jHN0Jiz.jpg

 

[oldbuffer]

Some immersion heaters (most modern ones) have an overheat thermostat as well as the normal, temperature adjusting, one. If the overheat trips, it has to be manually reset, usually via a small button, which is often recessed. The element would still read the correct resistance (usually around 18 ohm, which you appear to have) but no power would be supplied to it.