No permeate

[DRoseum]

The transformer is significantly undersized. You need 10A - 15A vs 2.7A or 3.0A. The number of Amps the pump draws increases under load (higher pressure). You need a much higher rated transformer.

Ive used this one with that pump with great success. Just put 2 wire nuts on the 2nd output that I wasn't using.

inShareplus 24V 400W LED Power Supply, IP67 Rainproof Waterproof Outdoor Driver,AC 90-140V to DC 24V Low Voltage Transformer, Adapter Converter for Outdoor Use https://a.co/d/c0M8fVo

[eustis22]

ok..I will give that a shot...strange the transformer is so under-watted.

[eustis22]

Grrr..this thing...so, I bought the recc'd transformer and it stopped the pump cycling issue. Worked great yesterday as I did my soap wash after re-engineering my RO board somewhat and putting both 1A and 1B two membranes in serial. Ran perfectly for about 2 hours.

BUT....when I went to do the rinse, the pump would not go on. I didn't have a multimeter up north to see where the issue might be but I will test next w/e. But this is very frustrating, the two steps back for every one forward. At the very least I suspect I will need new membranes with these two sitting in soap for a week, though if I can get the pump working again I might try an acid wash.

[DRoseum]

Check gfci or breaker just in case. Your membranes will probably be fine. Just flush them liberally to get PH back to neutral. Acid wash probably isn't required.

[eustis22]

Sadly, there is no GFCI switch on the outlet and none of the circuit breakers were thrown. I will use a multimeter next time I'm up there to see if I can find the issue.