Recent content by billshadow00

Yes, only two wires coming out of the main body of the IC40, red and black. The two wires are sheathed in a gray overwrap, and there did not appear to be any prior modifications, so it appears to be the the original flow switch. Flow switch Harwil model Q-12DS-C2 (StackPath). The aftermarket...

Thanks, Jim. I have seen the calibration procedure. I’ve tried it but can’t seem to get the procedure to work. I have seen reports that it doesn’t work on V1.9 and later, but there’s some mixed info on that. it doesn’t make sense to me either that the on/off flow switch could affect the salt...

Hah! only half a billion :) Mfg date is 10/23/2008 IC-V1.9R. I bought the house 8 years ago, and I think the pool was built in 2005, so maybe not the original IC-40. It indicates 60% life when I checked that, but I don't know how long it has been operating.

... OK, one more weird piece of info... I just powered down the pump and IC40 and disconnected the power connected at the Intellichlor power center, checked the pins (a little tarnished), and reinserted and tightened the connector. I then powered it back on. While the lights were still cycling...

...Additional info in case anyone has any ideas on this. This morning I turned on the pool, and while the IC40 was still booting up with the three salt lights flashing, the Intellitouch display showed showed 3700 ppm salt and indicated Low Flow. The flow light on the IC40 was green. After the...

I see many threads with similar symptoms, but not quite what I experienced: BLUF: Before replacing flow meter (2-wire version), I had 3700 ppm salt. After replacement with aftermarket 4-wire sensor (only used the two flow wires, isolated temp wires), flow is working but the salt reading dropped...

Thanks, mguzzy! I am leaning toward the same conclusion as you... not worth replumbing right now. As I contemplated replumbing, it did occur to me that I may be trading one challenge with another: trying to find the right balance of chlorination between spa and pool. On the other hand, I close...

I tested my spa and pool. Pool FC=6.0 and spa FC=5.6. To me that means the mixing of the spa is OK. I think that if my FC gets low, my spa will start showing symptoms before the pool.

Thanks, Jim! What are your objections to spillovers? Before you answer, perhaps I should clarify my situation in case I'm misusing the word, "spillover": My "spillover" is not like a waterfall. My spa is partially elevated about 2 ft above my in-ground pool, and at the spa waterline there are...

I bought my house 7 years ago, and it came with my first pool/spa. As an experienced Aerospace Engineer, it has been great fun learning how this stuff works. I am learning that the original builder/installer may not have known their business very well. My spa overflows into the pool. My return...