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2.5 - Troubleshooting
The table below lists the issues that could affect the QC panel, but that can also occur through damages of the control system installed on
the G.S. or from an external power source (mains supply).
These assumptions are generic and are used only to ease the explanation of the symptoms reported by the customer on the system and
report to qualified technicians who will have to intervene. The following considerations must therefore be taken only as a general value.
Displa
y off
The G.S. does not star
t
The G.S. a
tt
empts t
o star
t
Shor
t and quick star
t-ups
Failur
e t
o star
t alar
m
Th
e
G
.S
. g
iv
es
im
m
ed
ia
te
ly
al
ar
m
s
The G.S. does not supply
The G.S. st
ops f
or lo
w H
z
The G.S. star
ts and then
st
ops
TROUBLESHOOTING
PROBABLE CAUSE
TROUBLESHOOTING
R
R
R
R
R
Battery flat
Battery charger fuse
R
R
R
R
R
Battery flat
Charge the battery
R
Battery polarity reversed
Check and reverse the wires
R
R
R
R
R
Battery connections slow or oxidized
Clean, tighten and lubricate the battery terminals
R
R
Battery fuse cut off
Replace the fuse
R
The cranking gear does not get in the fly-wheel
Replace the cranking gear or the whole starter
R
Connection to the oil pressure switch is miss-
ing
Connect and check the ground connection of
the pressure switch.
R
When starting up, there is over speed
Calibrate the electronic speed regulator.
R
When it gives immediate alarm for low fuel
Fill up with fuel or disconnect the level
R
Immediate alarm for over voltage
Replace the voltage regulator.
R
Low oil pressure
Replace the pressare switch.
R
High engine temperature
Replace the thermostat.
R
Faulty switch
Replace the switch
R
The generator does not supply voltage
Ask for assistance
R
With applied load: load is too high
Without load: see notes AL13 par. 1.5.6
Reduce the load.
Clean filters, add coolant and/or engine oil. If
the problem persists, ask for assistance
R
R
Lack of fuel or air in pipes
Fill up the tank or purge the system "see
engine manual"
R
The supply system sucks air in
Check tightness of the pipes or the possible
activation of tear valve
2.4 - Test and alarms simulation
The protections of under voltage, minimum frequency, low oil pressure and dynamo are active when the genset is running. Therefore, all
simulations must be made when the unit is running.
ENGINE protections test
On the engine, disconnect the wire from the respective detecting probe and connect it to ground for about 3 seconds. The acoustic
alarm will go on, then the genset will stop and this alarm will be reported.
ALTERNATOR protections test
Minimum and maximum frequency (Hz):
Manually adjust the lever of accelerator or actuator, which causes a variation in speed in + or -. There is consequently a change in
frequency Hz on the display. Act until the security threshold intervenes with activation of an alarm and then lock.
Minimum and maximum voltage (Volt):
Manually adjust the VOLT on trimmer, placed on the electronic voltage regulator inside the alternator. Operate first in one direction
(+ or -) and then on the other one varying the output voltage until the protections get activated. After that, restore the voltage to the
nominal value (test to be carried out only with no load).
User and Maintenance Manual
English
