I have a fairly simple circuit that controls a water feature like you see in a mall.
The drive circuit for the pump has lost voltage. Output has gone from a steady 120VAC to fluctuating between 14 & 60 or so (hard to get accurate reading with just a Fluke multimeter set on AC auto range as it cycles).
If I were to guess, I would think it's an issue with one of, if not all, three MOSFETS on the board - these go to power out and drive the pump motor.
Besides the obvious "just replace them all", I'd like to try to diagnose the issue.
I was able to activate a relay to drive the pump motor off of an output but there's a timing problem when it switches off that makes the relay jump instead of just uncoupling. This pisses off the system on occasion and I have to completely reboot the system.
Anyone here good at chasing something like this? It's a step above my electrical abilities.
I know enough to know I don't know quite enough.
The company that made the controller, Humidifall, was out of Missouri up to about 5 years ago. Web search brings up old phone number and web site (at least for me).
The drive circuit for the pump has lost voltage. Output has gone from a steady 120VAC to fluctuating between 14 & 60 or so (hard to get accurate reading with just a Fluke multimeter set on AC auto range as it cycles).
If I were to guess, I would think it's an issue with one of, if not all, three MOSFETS on the board - these go to power out and drive the pump motor.
Besides the obvious "just replace them all", I'd like to try to diagnose the issue.
I was able to activate a relay to drive the pump motor off of an output but there's a timing problem when it switches off that makes the relay jump instead of just uncoupling. This pisses off the system on occasion and I have to completely reboot the system.
Anyone here good at chasing something like this? It's a step above my electrical abilities.
I know enough to know I don't know quite enough.
The company that made the controller, Humidifall, was out of Missouri up to about 5 years ago. Web search brings up old phone number and web site (at least for me).