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Pre-Start Check, 2-Speed Indoor
Fan System Option
1.
Remove the access panel to reach the VFD.
•
Carrier 48/50 Series: Blower compartment panel
•
Bryant 548J, 549J, 551J, 558J, 580J, 581J: Blower com-
partment panel
•
ICP RGS, RAS, RHS, RGH, RAH, RHH: Blower com-
partment panel
•
Carrier 40RU: Rear access panel
•
Bryant 524J*A/H: Rear access panel
•
ICP FAS, FHS: Rear access panel
NOTE: See Fig. 10-27 for VFD location in the units covered
by this document.
2.
Read all safety, caution and warning labels.
3.
Inspect wiring at the VFD for loose or disconnected wires
at the terminal strip and for wires in contact with sharp
edges and moving parts (pulley, belt).
Fig. 10 — ACS320 VFD location for the following units (208/230V and 460V units only):
Variable
Frequency
Drive (VFD)
48/50TC 07 and 50TCQ 07
580J/558J*07 and 548J*07
RGS072, RAS072
11
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