Have you taken the water sample line off and blown through it to verify it is clear? Before I turned my unit back in for maintenance program, I had to clear my lines repeatedly.
Note- something i did not know as an early adapter of this tech- All tridents should have a debris filter on the intake lines prior to sample entry into the machine. If your machine does not have it, you need to order from Neptune. It is a small back circular piece. Next after verifying that your sample line is clear, is your machine older than 1.5-2 years in use? If so, you can either send it back for the maintenance program with Neptune, or you can continue to trouble shoot and open the machine up to verify if there are any clogs inside. Someone already posted a long dissertation about doing this- I think here and online and there are videos on YouTube. If these tricks to clear clog don’t work or if your trident is older already, then servicing is way to go- there are 3 options- mail back and pay for refurbished trade in, have them fix yours, or order parts and diy. Tridents design is such that it will not last longer than a few years without maintenance and probably more like after 1 year in normal slightly higher nutrient systems.
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