Operation Manual -
PoWerMaster®
2400 – 30 - 90 kVA
Trouble Shooting & Repair
Document no. 578.650BB
Page 63 of 91
9.0
Trouble Shooting & Repair
Only have qualified personnel remove covers for troubleshooting and repair. Please be aware
that the DC capacitors can remain charged to a dangerous voltage
up to 5 minutes
after the
mains input power has been disconnected.
Usually the display text provides sufficient information to get the ground power unit into operation
again. In case the display is blank, please check Q4 (Circuit Breaker) and fuse F3 at the Interface Board
A2 (corresponding LED D8). The following fuses are located on the Interface Board (A2):
Fuse #
Applicable for
Type
Rated voltage
Amp rating
F1 (D24)
I/O Fuse
ATO Blade Fuse
32 V
2 A
F2 (D24)
I/O Fuse
ATO Blade Fuse
32 V
2 A
F3 (D8)
Display Fuse
ATO Blade Fuse
32 V
2 A
F4 (D2)
Interface Fuse
ATO Blade Fuse
32 V
5 A
F5 (D4)
Fan Fuse
ATO Blade Fuse
32 V
10 A
Fig. 9.0.1 Fuses F1-F5 and LED indication (A2 Interface Board)
If the displayed text does not provide sufficient information to solve the problem, Table 1, Table 2 and
Table 3 (section 9.1) suggest corrective actions to be carried out for each error code.
Additional error information regarding the output voltage, overload, covering the error codes area can
be derived from the error code according to the following directions:
Output Voltage :
30xx / 31xx / 35xx
Overload :
40xx / 41xx / 42xx / 43xx / 44xx / 45xx / 46xx / 47xx
Phase code:
xx01 = Phase A
xx02 = Phase B
xx03 = Phase A & B
xx04 = Phase C
xx05 = Phase A & C
xx06 = Phase B & C
xx07 = Phase A, B & C
Examples:
Error Code 3501 refers to “Output Voltage Too Low” at phase A.
Error Code 4407 refers to “Overload I > 300% - 1 sec.” at all 3 output phases.
