Copyright © Fujitsu General America, Inc.
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Electrical
Connections
Before Turning
On Power
Pre-Start-Up
Checklist
Check Operation
(1) Turn on power to
the outdoor unit,
indoor units and
branch boxes.
(2) Press and hold the
CHECK button for
approximately 5
seconds.
(3) The number of
connected branch
boxes and internal
units will be displayed
on the display. Check
that the displayed
number matches the
actual number of
connected units.
LED Display
LED Display
Stranded Wire Shown
Solid or Stranded Wire
1.
Was the system leak tested, purged with nitrogen and
evacuated?
2.
Have all refrigeration lines been insulated separately?
3.
Was the correct amount of refrigerant added? All HFI
systems require the addition of refrigerant
4.
Is the system electrical supply all connected according
to instructions and codes?
5.
Are all system electrical connections tight?
6.
Have the service valves been opened on the outdoor
unit?
Copyright © Fujitsu General America, Inc.
Perform the Check Operation -
auto diagnostic function
- See installation manual before running Check Operation
system function.
ALWAYS PERFORM THE CHECK OPERATION.
NORMAL OPERATION WILL NOT BE POSSIBLE
WITHOUT PERFORMING THE CHECK OPERATION.
If you attempt Test Run or system operation "FAIL" is
displayed when operating the unit before the check
operation is completed. Once the Check Operation has
been performed put system in Test Run mode.
Before finishing:
Confirm operation of each indoor unit individually
- Check for cool or warm air flow depending on mode
- Confirm air flow and louver operation
- Make sure all remotes operate the units
Read actual installation manual for complete details
on the operating conditions and limitations during
“check operation.”
