Evening all,
I've got a proper headscratcher of an issue with a few years old Premier Elite 48 that I'm wondering if anyone else has seen?
For reference, the set up is a PE48 control panel, 8XP-W, PSU200XP and Smartcom. Everything as far as I know and can see is set up correctly, including the removal of the 12V+ from the panel to the PSU200XP network terminals. The PE48 panel has 8 x QDs, the 8XP-W, an Odyssey X and an Odyssey 5E and the Smartcom connected to it, as well as an SMS module on the Digicom outputs and supplies all of these with 12V.
Recently during a battery test (17Ah 12V Yuasa, 2 years old), the current draw of the panel was measured when on mains supply and on battery.
On mains: approx. 300mA @ 13.7V.
On battery: approx. 10mA (yes, 10mA) @ 13.1V to 12.6V.
This current reading was verified in Wintex, via the current measuring pads on the panel, and via an ammeter in series with the battery - they all measured the same.
How in god's name could it be 10mA?! The panel works fine in battery mode, I can use the keypads, sound the SABs and strobes, connect via Wintex, see the PIRs detecting operating, no fuses blown - the panel draw simply cannot be 10mA.
So far we've tried swapping batteries just in case the battery was knackered, disconnecting SABs, communicators, network devices and aux devices just in case there was a parallel path and double checked the 230V wiring to ensure there's no weirdness there. We also disconnected the battery when the panel was isolated from mains and it died immediately suggesting no parasitic or parallel supply from anywhere?
Any ideas...? I'm stumped!