Phase Technologies Essential Series - Page 51

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Table 17 - Troubleshooting
PROBLEM
POTENTIAL
CAUSE
SOLUTION
Motor not
running
Is a fault code
indicated?
Resolve any factors likely causing the fault.
Clear the fault by pressing both arrow keys on
the keypad or by cycling input power OFF/ON.
Are the remote
switches AUX1 and
AUX2 closed?
Check status of AUX1 SELECT and AUX2
SELECT. AUX terminals must be closed to run in
AUTO mode. The LCD display indicates the status
of AUX terminals in the default display mode.
Are the signals to
the Control
Terminals
corrupted?
Shielded cable is required for AUX terminal
switch leads longer than 20 ft. Regular wire will
induce capacitance in the line and corrupt
control signals. Shielded cable is recommended
for all Control signal cables.
Is the keypad in
MAN or OFF
mode?
The keypad will override signals on the Control
Terminals when OFF or MAN is selected.
Keypad must be in AUTO mode for external
control signals to control the motor.
Is the maximum
frequency set at 0
Hz?
Check the maximum frequency by using the
keypad to navigate MAIN MENU>CHANGE
PARAMETER VALUES>OPERATING
PARAMETERS>MAX FREQUENCY.
Are the input
terminals
energized?
Check that terminals have voltage. If not, check
the main input fuses or breaker.
Poor pressure
regulation
Turbulence due to
sensor location
Move pressure switch or transducer at least 6
inches away from pressure tanks, check valves,
and pipe elbows.
RESPONSE TIME
not optimized
Adjust RESPONSE TIME to tune system to site-
specific configurations.