Zodiac LM2 leaking at connector


New member
May 3, 2020
Montreal, Canada
Hello! First time poster here; really glad to have found this great community that I'm just starting to discover.

Long story short, I'm a first time pool owner. I bought a house last year with an already running pool. Before winter it was closed by professionals (I figured I'd rather be safe for the first time around).

Last weekend I decided to open the pool myself. It turns out that the SWG (Zodiac LM2) is leaking from the red connector. I attached a video. I haven't found much troubleshooting information online or in these forums. I can see what looks like an o-ring in there that might need some love? I don't want to risk anything without some advice. What are my options? Repair / replace / ..

Thank you!


Gold Supporter
TFP Guide
Jul 21, 2013
Northern NJ
Welcome to TFP.

This manual should help you in troubleshooting - https://www.zodiacpoolsystems.com/-/media/FBE5BA5EB6EF4813B2F9B35D2CB2B8B4.ashx

Page 19 lists the W040931 Union set.

See if this looks like at the end of the pipes - https://www.poolsupplyunlimited.com/pool/zodiac-w040931-lm2-cell-union-sold-individually/19283p1 Many sites list it as unavailable.

You may just need to replace the O ring and may be able to buy the O ring separately.

Otherwise a new cell is probably in your future.