- #1
Glurth
- 59
- 0
I have a DC powered pump, that has suddenly stopped working.
During troubleshooting I came up with the following results, that I just cannot reconcile:
Input wires, not connected to pump: 12v
Input wires connected to pump: 0v
Sounds like a short in the pump right? However, connecting the wires does NOT blow the fuse (though the fuse DID blow before I started troubleshooting). Also the fuse box, has fans and stuff, that I can always hear go on, when the pump’s load is applied, and I no longer hear them.
Furthermore, an ammeter test, connected in series (along the hot line) with the pump, show ZERO amps flowing to the pump, when it’s connected.
That’s what I just don’t get:
How can it take that input voltage of 12V, and knock it down to zero without any current flow?
Any thoughts on how these results might make sense?
(The ohmmeter shows a resistance across the pump that is at least several Mega-ohms, when power is not connected)
During troubleshooting I came up with the following results, that I just cannot reconcile:
Input wires, not connected to pump: 12v
Input wires connected to pump: 0v
Sounds like a short in the pump right? However, connecting the wires does NOT blow the fuse (though the fuse DID blow before I started troubleshooting). Also the fuse box, has fans and stuff, that I can always hear go on, when the pump’s load is applied, and I no longer hear them.
Furthermore, an ammeter test, connected in series (along the hot line) with the pump, show ZERO amps flowing to the pump, when it’s connected.
That’s what I just don’t get:
How can it take that input voltage of 12V, and knock it down to zero without any current flow?
Any thoughts on how these results might make sense?
(The ohmmeter shows a resistance across the pump that is at least several Mega-ohms, when power is not connected)