Why does my control want me to downgrade my modules?
This can be caused by your control's "Release version" being older than your modules firmware.
To solve this:
Do not downgrade modules.
Ensure current release version update file is on the PHASON USB ready to be installed. Then install these updates from Main menu > Administration > Diagnostics > Install Updates.
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Should I switch off the power to add or remove modules?
Yes. You should always fully power off the control before adding or removing modules.
Can this control more than one curtain?
Yes. If you want more than one set of curtains controlled exactly the same, and the combined motors are within the relay ratings, or you are using contactors, then you may control multiple curtains off one SPC-2.
How many fans can it control?
The limiting factor is the variable stage rating. Add up the current draw of the fans you want to control and compare it to the variable stage rating. If the combined fans draw less than the variable stage rating, then you can control them.
How many fans can the FC-1T-1VAC control?
The limiting factor is the variable stage rating. Add up the current draw of the fans you want to control and compare it to the variable stage rating. If the combined fans draw less than the variable stage rating then you can control them.
Do I have to turn the power off to change the modules?
Yes, you should always turn the power off whenever adding or removing modules.