Profroid GSB Notice D'instructions page 54

Flash
Alarm conditions
code
Warning:
4
when the signal from
Connection
current sensor is not
lost CT to
communicated to the
sensor
sensor module.
Warning:
when
communication
5
between
Communication
module
Error
module
controller
Trip: Appears
the excessive current
is present
compressor. Refer AE
bulletin
6
details.
Locked rotor
Lockout: Appears when
10 consecutive locked
rotor
occur.
Trip: Appears
there
phase / single phasing.
7
Lockout: Appears when
Missing phase
10 consecutive missing
phase
occur.
Possible failure
reasons
The current sensor is
Appears
not connected to the
sensor module.
Faulty
sensor.
Faulty sensor module.
Communication
between CoreSense
control module and
Appears
rack controller has
there is no
been lost.
control
Communication
and sensor
between
or rack
CoreSense
module
sensor
been lost.
when
Motor
in the
mechanically seized.
Excessive
for more
present
compressor.
Damaged valve plates
in cylinder head.
trip alarms
Loose
when
connections at the
is a missing
terminals
compressor T-Box.
Worn out contactors.
trip alarms
Line break in one of
the phases.
Troubleshooting measures
Verify if the CT connector is connected to the sensor
module. If not connect the 4-pin current sensor
connector into the sensor module.
Verify if there is continuity between pin 3 & 4
(closest to the latch) of the current sensing
connector. The resistance should be less than 1 Ω. If
the resistance is greater than 1 Ω, replace the
current
current receptacles are fully engaged in the connector block.
Verify if the Amp and Volts values are correctly
displayed. If not, inspect the wire harness connector
to ensure that the pins are fully engaged.
If the above-mentioned trouble shooting measures
didn't give the positive results, the reason is faulty
sensor module or mis-installed connector. Replace the
faulty sensor module with new one.
Is there a communication network? If not, set the
network dip-switch to "stand-alone" and press reset.
Is there a communication network? If not, verify that
™
the communication harness is engaged at both the
CoreSense
If the LED on the top edge of the sensor module is
dark, verify 24VAC power to the sensor module, or
replace the sensor module.
the
If communication network amber light is continuously
control
™
on, reverse the communication wire polarity. If voltage
and the
between centre pin and the right or left pin isn't 2.3-
module has
2.6VDC, inspect for communication wire failure or
wire strands that are "shorting" between the wires or
to ground.
rotor is
Verify that motor voltage is adequate (+/- 10% of
nominal rated voltage), especially during the starting
current
event.
in the
Start compressor with no load. If it does start with
no load, inspect the valve plate(s) for damage or look
for other causes of leak-back.
wiring
Verify voltage supply from the main power buss.
inside
Verify voltage into and out of contactor (Repair or
replace contactor if necessary).
Verify that motor electrical connections are tight at
the compressor motor terminals.
sensing module. Be
module and the sensor module.
™
certain that the
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