Sta-Rite Max-E-Therm 400 heater shuts off st 86 with e06 message

  • Always!! Turn off the pump when changing the backwash valve positions!!
  • Always turn the MPV handle in one direction. Not back and forth or you will tear the spider gasket.
  • Be careful that you do not drain water below your skimmer intake. Put a fill water hose in your pool if you do not have an auto fill line.

To backwash the filter...
  1. Turn the pump off.
  2. Turn the multiport to "backwash" and restart the pump, watch the view-glass or the end of the discharge hose to see when the backwashed water becomes ~clear - 30 seconds to 1 minute.
  3. Turn off the pump
  4. When it is fairly clear, turn the multi to "rinse"
  5. Turn on the pump for 30 seconds,
  6. Turn off the pump
  7. Repeat 2-6 two more times
  8. Turn the handle to FILTER
  9. Turn on the pump
  10. Record what your filter pressure is as your clean PSI. You should backwash the filter anytime the PSI rises 25% from the clean pressure.
Just tested my old sfs and multimeter reading was 2.52 does it mean it's a good sensor?
 
The reading after disconnecting and taking it out was same o.l.

That confirms why you got the E05 error.

where can I buy legitimate one besides amazon?

For the Pentair price test it and return it if it does not test good.



 
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That confirms why you got the E05 error.



For the Pentair price test it and return it if it does not test good.



I bought this one from Amazon for 89. Should I return it and order another one or use one of sites you suggested?
 

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I bought this one from Amazon for 89. Should I return it and order another one or use one of sites you suggested?
I would return it and go direct to a reputable pool store.
 
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This looks like your MPV. Replace parts 4, 6, 8.

See the manual attached to this post.

1728873798556.png
 

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  • hiflow-side-mounted-backwash-valve-manual-english-2.pdf
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