GC-1F Installation Instructions and Reference Handbook
DEIF A/S Page 73 of 123
New application software can be downloaded from www.deif.com
This will force GC-1F into boot mode.
The four alarm LEDs in the front of the GC-1F will start to light one after one. Slow
rotation will indicate erase of flash memory and fast rotation which indicates program-
ming of flash memory.
7. When download of new firmware is done, saved parameters can be downloaded into unit.
If the programming should be interrupted, it is possible to force the unit back
into boot mode by disconnecting aux. voltage. Press and hold the “Stop”
button. Connect aux. voltage, and the unit is in boot mode.
Boot-mode with hardware: 1.02 Alarm LED 1 = Red
1.05 Alarm LED 1 + 3 = Yellow
Firmware 2.x.x downloaded into hardware 1.02 will NOT work and all four alarm
LEDs will flash red and indicate error.