Conext SW4024 Fan

stmarstmar Solar Expert Posts: 327 ✭✭✭
Anyone notice how often the cooling fan runs on the SW4024? Mine is running more since the weather has warmed. Unit does not seem overheated. Just wanted to hear other experiences.

Comments

  • mcgivormcgivor Solar Expert Posts: 2,995 ✭✭✭✭✭
    In a tropical climate where the ambient temperature rarely drops below 25°C the fans run 24/7, both original fans in my unit failed, one at 6 and the other at 9 months. The cause was the circlip became dislodged creating axial play thus interference with the outer case, replaced them with a pair of $3 fans which have so far have not had any such problems ~18 months 
    1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery bank 
    Second system 1890W  3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.  
    5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
  • stmarstmar Solar Expert Posts: 327 ✭✭✭
    mcgivor said:
    In a tropical climate where the ambient temperature rarely drops below 25°C the fans run 24/7, both original fans in my unit failed, one at 6 and the other at 9 months. The cause was the circlip became dislodged creating axial play thus interference with the outer case, replaced them with a pair of $3 fans which have so far have not had any such problems ~18 months 

    Good to know. What fans, brand and part #, did you replace them with. Mine only run when it is hot and not long at any time as far as I can tell. I have had no issues but whenever something different happens I like to do research.
  • mcgivormcgivor Solar Expert Posts: 2,995 ✭✭✭✭✭
    Don't know the model #, they are branded CNDF, 12VDC, just a regular 120 mm. puck fan purchased at a local electronics store, had to splice the plug from the original ones onto the replacements. With occasional use the original ones would probably last as long as the warranty, but running 24/7 365 is not something they can tolerate, based on both failing within a year. Warranty would have replaced them, if I shipped the inverter for replacement, the cost of which would be more than the cost of 33 fans, each time, so I'm 64 fans ahead of the game, without much downtime. Schneider should really source another fan supplier, perhaps I'll send them a message because 6 months is a pitifully short a life expectancy, in my opinion.
    1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery bank 
    Second system 1890W  3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.  
    5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
  • stmarstmar Solar Expert Posts: 327 ✭✭✭
    Thanks, stuck the info in a file in case I need it.
    Hope they respond to your communication, weak link does nobody any good.
  • stmarstmar Solar Expert Posts: 327 ✭✭✭
    Since it has been warm I have been keeping an eye on my inverter. The fans have come on a few times and last time I caught it I noticed that the air coming out of the inverter was actually cool, so I guess the fans are doing their job. Hopefully I will not have the issue that mcgivor had since the fans are on intermittently.
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