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AK-SC255
License Error
Lost License
Important note:
White Screen
Flickering Screen
Blank Screen
World Map doesn't disappear
For Danfoss Technical Support call +1-410-931-8716.
©Danfoss (USCO / MKS), 04- 2010
Troubleshooting Guide
•
Do not remove the unit from the wall...
•
Contact Danfoss Technical Support. They can correct most license issues via
phone or email in minutes.
•
Have the MAC Address of the AK-SC255 in question ready when you call.
•
Do not remove the unit from the wall...
•
Contact Danfoss Technical Support. They can correct most license issues via
the phone or email in minutes.
•
Have the MAC Address of the AK-SC255 in question ready when you call.
Field software "upgrades" can only be done within respective Versions, (e.g.
VR02.083 to VR02.101 etc.) Changing versions (e.g. VR02.101 to VE02.101 etc.
will automatically void the warranty.
•
Most likely after performing the checks at the top of page 2, issues with a
white screen or a flickering screen will have been resolved.
•
If the flickering re-occurs, note if the red/black twisted pair which carries 5vdc
to the Baseboard is soldered to the other end (Fig. 4) below, at the PROGBD
or is plugged into a Molex connector there...then contact Danfoss Technical
Support for further assistance.
•
Look closely to see if there are actually dark characters/icons on the screen
or if it is totally blank. If it is totally blank check for or establish 5vdc at the
Baseboard.
•
If there are characters or icons on the screen but the screen is not lit (the back
light is not working)...replace the unit, it is not field repairable.
•
Make sure the jumper at JP2 (Fig. 5) on the Baseboard is correctly in position
across both pins (vertical position) and then press the SW2 reset switch.
Contact Danfoss Technical Support for further assistance.
USCO.EI.RF0.D1.22 / 521U0152
Figure 4
Figure 5
Soldered connections
(no plastic pin and
socket connectors)
5
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