Higher TDS after replacing filters and resin?

[azreefkeeper]

Did you change these out?

[PIC1]
And is this what you bought?

[PIC2]

Hi nukemdanno, yes, presumably that is the RO part that is in this unit (haven't opened it) and you are also correct that this is the maintenance kit to replace the filter media.

 

[nukemdanno]

Yeah so I'm leaning towards your 75/gal per day filters might need to be replaced. I use MD's version of your equipment and that filter's life span can be 1 to 2 years entirely dependent on the incoming city water. So if you haven't changed those 2 out, I would recommend replacing those. One of my TDS probe is right after that stage and then the 2nd TDS probe is outgoing product after the DI resin


Edit: I forgot to mention that the RO membrane is supposed to have a longer life span that the Carbon/DI Cartridges which is why they are sold separately

 

[azreefkeeper]

So I pulled the #2 TDS probe and found it to be measuring 1-2 TDS in open. The pins were correctly positioned in the housing as well but the readings would fluctuate, especially if I blew into it. At one point I was able to get the screen to read 0 but only if I blew through it with a strong force. When sitting idle it would creep back up to to 1-2 TDS.

That's enough for me to believe the probe is inaccurate and I'll likely end up replacing the dual TDS meter entirely.

 

[juarec0201]

So I pulled the #2 TDS probe and found it to be measuring 1-2 TDS in open. The pins were correctly positioned in the housing as well but the readings would fluctuate, especially if I blew into it. At one point I was able to get the screen to read 0 but only if I blew through it with a strong force. When sitting idle it would creep back up to to 1-2 TDS.

That's enough for me to believe the probe is inaccurate and I'll likely end up replacing the dual TDS meter entirely.

I know this is a few years back. Was it the probe meter? I’m having very similar issues.