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1. DELCOS 3100 Electronics
[Display] / Problem
Possible Cause
Remedy
30
Fan motor circuit breaker has responded.
Switch motor circuit breaker back on
again.
[FAULT SR-DRIVE (47)]
Heat sink temperature exceeded
Control-cabinet filter dirty.
Clean or change control-cabinet filter
mats.
System operated while ambient temperature
too high.
Reduce ambient temperature.
Wiring to fan faulty.
Fan faulty.
Check wiring from control power
transformer to fan.
Ribbon cable faulty between control board
(PCB94) and gate drive board (PCB95).
Check connection at plug, gate drive
board J15, terminal 4 and 5.
Check ribbon cable between control
board (PCB94) and gate drive board
(PCB95).
Control or gate drive board faulty.
Otherwise contact Gardner Denver
Service.
[FAULT SR-DRIVE (48)]
Motor temperature exceeded
The motor temperature sensor is monitored
by Delcos 3100. Occurrence of this fault,
therefore, points to a malfunction on the
control board.
Contact Gardner Denver Service.
[FAULT SR-DRIVE (49)]
Current sensor faulty
Motor cables not routed through the current
sensor.
Check for correct installation of motor
cables through current sensor.
Current sensor incorrectly connected or not
connected at control board.
Check cabling and plug from current
sensor to control board J10.
Current sensor, plug or cabling faulty.
Make sure current sensor is con-
nected to phase A on control board.
Control or gate drive board faulty.
Otherwise contact Gardner Denver
Service.
[FAULT SR-DRIVE (50)]
Current sensor – phase B
Contact Gardner Denver Service.
[FAULT SR-DRIVE (51)]
Current sensor – phase C
Current monitoring of phase B and C is not
used. Occurrence of this fault points to a
malfunction on the control or gate drive
board.
[FAULT SR-DRIVE (52)]
CAN communication error
Ribbon cable faulty between control board
(PCB94) and gate drive board (PCB95).
Check ribbon cable between control
board (PCB94) and gate drive board
(PCB95).
Faulty cable or plug of CAN connection
from control board to Delcos 3100.
Check CAN connection from control
board to Delcos 3100.
Control board faulty.
Delcos 3100 faulty.
Otherwise contact Gardner Denver
Service.
[FAULT SR-DRIVE (53)]
Enable input (user enable) open
This input is deactivated on the hardware
side. Occurrence of this fault points to a
malfunction on the control board.
Contact Gardner Denver Service.
Motor or compressor seized.
Contact Gardner Denver Service.
RPT sensor faulty.
[FAULT SR-DRIVE (54)]
Motor seized
Control or gate drive board faulty.
[FAULT SR-DRIVE (55)]
Precharging fault
Occurrence of this fault points to a mal-
function on the control or gate drive board.
Contact Gardner Denver Service.