TROUBLESHOOTING
20
W-GV4 Scalino outdoor — April 2017 — EN
6
TROUBLESHOOTING
6.1
General
If any problem should occur, check basic conditions and
examine all external wiring, switch gear and circuit breakers.
Also check if measuring instruments give the correct value. If in
doubt, measure directly on the alternator terminals with an
independent instrument.
In case of inverter failure or oil pressure, oil temperature or
exhaust temperature limit exceeding, the error will be indicated
on the PMG local panel (bottom left; refer to Figure 8).
6.2
Alternator/ electrical faults
Beware of parts which are live! The alternator
generates voltage up to 650 V.
Remove 3 A fuse from the control panel while
working on the Genverter in order to prevent the
engine from starting.
6.2.1
Troubleshooting table for alternator
PROBLEM
CAUSE
SOLUTION
No output (voltage) at all
Circuit breaker "off" or faulty fuse
Check switches and fuses and measure directly on
the alternator to exclude external causes.
Low engine RPM
Check the engine RPM and adjust
Alternator failure
Check alternator resistance (1.4Ω). Contact
WhisperPower Service
Genverter output voltage too low
when in no load condition and RPM
is above 2500 RPM
Alternator failure
Contact WhisperPower Service
Genverter output voltage too low
when under load, but OK in no load
condition
Genverter is overloaded
Switch off a load; reduce number of consumers
Insufficient engine RPM
Increase minimum RPM setting
Engine RPM drops when loaded
Refer to “Engine speed drops” section in 6.2
6.3
Engine faults
Remove 3 A fuse from the control panel while
working on the Genverter in order to prevent the
engine from starting.
6.3.1
General
When the engine is not cranking well, starting problems almost
always originate from battery problems or poor battery cable
connections.
When the engine does crank, starting problems almost always
originate from lack of fuel or air bubbles in the fuel pipes.
A failure code is displayed when a hardware failure at the engine is
detected.
6.3.2
Troubleshooting table for engine
PROBLEM
CAUSE
SOLUTION
Diesel engine fails to crank; no
response at all
Faulty fuse on the control panel
Replace fuse
Battery switch off
Switch on
Battery completely empty
Charge or replace battery