I have had a GC3 for about 4 months (replaced a GC2 with a failed 900mhz module) and it has been working perfectly fine until I started getting an AC power loss message about a month ago.
I didn’t have time to diagnose at the time so I just disconnected the power and battery from the panel. The system isn’t monitored as I am still waiting until the new firmware to make sure all the features I need work, and hopefully use wifi instead of cellular…
Fast forward to last week. I purchased a new battery for the take over module and installed it. I reconnected the panel battery and power. The unit started booting, but with a white 2GIG GC3 screen and a grey progress bar underneath. The bar gets to about 99% with the message “Result 0” above it then the screen shuts off. The emergency and home buttons flash every 10mins or so, but the panel does not respond.
Could having the panel disconnected for a long period of time bricked it?
I started getting an AC power loss message about a month ago
How long is the power cable run for this panel?
Can you test the voltage at the panel end?
Could having the panel disconnected for a long period of time bricked it?
No. There would be something else amiss. So neither button responds and the screen never turns on after the boot-up screen? (“Result 0” is normal to see by the way)
Once the screen reads Result 0, both buttons flash, emergency red and home white; the the screen goes dark and will not respond to button or screen presses.
Voltage into the existing panel = 18.25V AC
Panel Battery Voltage = 13.32V DC
Voltage at Take Over 345 Module = 12.65V DC
Voltage at GC3 = 13.48V DC
The GC3 is about a 40’ wire run from the panel/take over module.
I did find corrosion on the negative of the panel batter I replaced, and now I am seeing corrosion on the negative terminal of the new battery.
I’ll see if I can find the power supply the GC3 came with, or borrow one from one of the TS1s and try to power it up that way, but I don’t think that will make a difference as the GC3 will not power up on its internal battery.
I cleaned up the wiring and reconnected everything according to the install guides today. The takeover module is powered from the DC AUX on the old alarm panel that has its own power supply and battery backup. This AUX is also powering the hardwired motion sensors. Common legs are tied together for all hardwired sensor and connected to a COM port on the old panel. The other legs are connected directly to the takeover module. I connected the GC3’s power supply directly to the panel on about a 40’ 20GA solid wire run.
All was well and the system booted back up and I was able to reprogram all my sensors.
Fast Forward 8hrs and I am getting the same ‘Console: AC Lost’ message again.
The DC power at the GC3 is reading 13.87v, while the power icon has a mark across it and is flashing to a half full battery icon.
I have two TS1’s I could rob the power supplies from to test with as well, but not sure if they are the same voltage/amps as the GC3.
If you were not using the 2GIG Power supply previously, what was powering the panel? What are the power specs for the power supply that was previously in use?
Please post an image of the panel terminal block where the wires are connected.
My panel is doing the same thing. Lost its ability to see the AC adapter. I did a reboot and it boots to a white screen and a grey bar builds to a “result 0.” Did you figure out what was wrong with your panel?
This is a pretty old thread but I thought I’d throw my experience on here because I had the same problem recently. Although the panel was showing a loss of AC power it kept running for many days so it wasn’t running on battery. I’m using the provided transformer and I tested the voltage at the panel and it was just over 14 VDC so it was getting line power. I ended up replacing the backup battery and presto everything works fine now. It’s a bit strange that it was actually a backup battery problem but it was saying it was an line power problem. I’ve only had my panel for less than 2 years so it’s strange that the battery gave up so quickly. I’m running firmware version 3.0.2.