Hayward AquaRite flow switch bad. Which switch?

[chawkins99]

Noticed today no chlorine generating. Display is showing no flow.

Checked the switch with a multimeter and it's open circuit with or without the pump running. Ergo... bad switch.

Searching online for a replacement, there seem to be 2 different types (with the same part number). Are these 2 inter-changeable?

Also, the price varies wildly. From $30 on Ebay to $240 from our friendly neighborhood pool supply company

Fortunately, I still have the puck feeder in line so added my last 2 pucks to keep my chlorine up.

 

[jblizzle]

Top picture looks like the original. If INYOPools says the bottom one will work, then it should work.

 

[dinom]

My new Aquarite came with the one that has the little round "button" on the switch. That one is the original.

 

[chawkins99]

I ordered the $30 one off eBay which arrived yesterday. It's the second one from my original post.

Installed and seems to work fine.

Pretty sure it's a made in China knockoff but can't go wrong for $30.

 

[chawkins99]

So. 9 months later and the 'Chinese knockoff' has failed.

I've ordered a replacement. This time I believe it is the OEM switch (made by Harwil Corp).

Maybe I should buy a spare ready for next year.

 

[mas985]

I have had mine for 10 years now without failure. Is there something that is messing with the wire on yours?

 

[chawkins99]

I have had mine for 10 years now without failure. Is there something that is messing with the wire on yours?

Not that I can tell. The wire looks OK. Just no-flow. I cut the plug off the one that failed last year and twisted the wires together to over-ride it until I get the replacement.

I've only had the SWG for 2 years so not a great track-record.

 

[mas985]

Do you still have the failed switches? You might cut off the wire close to the switch and do a continuity test there to see if it is the switch or the wire failing.

 

[chawkins99]

Yes. Still have them both. I'll test them when I have the replacement.

 

[chawkins99]

Received and installed the new switch and all is working again.

I tested the original switch and it is definitely bad. Cut the wire near the switch and tested there.

I re-tested the replacement switch I bought last year and that is intermittent. Looks like a bad cable. The switch works.

I emailed the supplier saying it had failed after just 9 months and they sent me a replacement under warranty so I now have a spare if it fails again.