AK-SC255
Troubleshooting Guide
©Danfoss (USCO / MKS), 04- 2010
USCO.EI.RF0.D1.22 / 521U0152
5
For Danfoss Technical Support call +1-410-931-8716.
License Error
Do not remove the unit from the wall…
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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.
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Lost License
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.
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Important note:
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.
White Screen
Flickering Screen
Blank Screen
Most likely after performing the checks at the top of page 2, issues with a
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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
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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
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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
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light is not working)…replace the unit, it is not field repairable.
World Map doesn’t disappear
Make sure the jumper at JP2 (Fig. 5) on the Baseboard is correctly in position
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across both pins (vertical position) and then press the SW2 reset switch.
Contact Danfoss Technical Support for further assistance.
Soldered connections
(no plastic pin and
socket connectors)
Figure 4
Figure 5