Originally Posted by
wade
I installed ATK a couple of weeks ago. Use the PMUP to top up the sump with RO water (via FMM). A few days ago, I noticed the water level was lower than normal and the FMM was clicking repeatedly.
I have verified that the FMM is putting out 24V when on. I assume the clicking is resistance from the pump (it isn't moving) causing the switch to jump to Off state.
I took the impeller cover off the PMUP and nothing in there, although I cannot move it at all (I assume this is normal since its DC).
Any thoughts? I'm guessing the PMUP has frozen.
Thanks!
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