RUN
STOP
FWD
REV
REM
LOC
U
H
F
RUN
STOP
FWD
REV
REM
LOC
U
H
F
STOP
RESET
WWW.BIGASSSOLUTIONS.COM © 2016 DELTA T CORP. ALL RIGHTS RESERVED.
64
Understanding and clearing fan faults
To reset the VFD,
press the STOP/RESET button (after the condition that induced the fault has been
cleared).
External faults
EF or “External Fault” is displayed when the fan has stopped due to an alarm condition. EF
also displays if the user has interfaced the fan system with other equipment requiring fan
shutdown, such as an ESFR system.
Internal faults
All other error codes are considered “Internal faults.” These codes are specific to problems
associated with the VFD or motor. For example, the error code for “input power phase loss”
is shown on the left. For a full list of error codes and their meanings, see “Fan Error Codes.”