TROUBLE SHOOTING
EN / W-SQ20 for mobile applications / April 2010
29
Failure code
Problem
COMMUNICATION
Communication error between the panel end the generator
LOW START BAT
Starter battery voltage too low
ALTERNATOR
No output battery charging voltage
AC-ALTERN. TEMP
AC-alternator temperature is to high (generators for mobile applications only)
WATER TEMP
Coolant temperature is too high
OIL PRESSURE
Oil pressure failure
AC VOLTAGE
Generator AC output voltage is either too high or too low
HIGH CURRENT
Generator is in overload
FREQUENCY
Output frequency of the generator is too low
5.2.2
Trouble shooting table engine
PROBLEM CAUSE
SOLUTION
Diesel engine fails to crank, the
starter makes clicking noises, or
the engine cranks very slowly
•
Almost certainly this is an electrical
problem. Display will indicate “LOW
START BAT”
The problem must be an electric malfunction.
No reaction at all
•
Starter battery switched "OFF".
Check position of the battery switch and switch
"ON".
•
Faulty fuse on the control panel
Replace fuse
No reaction or clicking noises,
or slow cranking
•
Starter battery voltage insufficient
(battery too weak).
Check battery voltage. Recharge the battery.
Inspect battery terminals and cables for a good
electrical connection (inspect against corrosion,
tattered wires, etc.)
•
Too thick engine lubricating oil.
Change oil for a lower viscosity.
•
Wiring control system faulty
During the normal starting process, the battery
voltage drops to 11V (with a fully charged
battery). If the voltage does not drop during
starting, the electrical connection is faulty. If the
battery voltage drops lower than 11V, then the
battery has been discharged too deep.
•
Starter motor faulty
Repair the starter motor
Starter is turning engine
smoothly, but engine fails to
start
•
Out of fuel or faulty fuel, water in the
fuel.
Fill up with fuel or replace with better quality.
•
Fuel solenoid is not opening (no “click”
can be heard).
Check wire connections and circuitry to solenoid.
(Refer to DC wiring diagram)
•
Fuel lift pump is not working.
•
Fuel filter is blocked.
•
Air in fuel lines.
Check fuel filter and fuel lift pump: clean or
replace if necessary.
Bleed air from fuel system (refer to maintenance
section).
•
Wrong valve clearance.
Adjust valve clearance,
•
Low compression because of dirty
valves.
Clean valves. Take off the injection bent and
inspect the outlet port. When little rust in the port
clean the valve by taking off the valve spring and
rotate until rust is removed. When the outlet port
is strongly affected by rust, the exhaust system is
not properly installed (refer to paragraph 5.4.3).
Contact Whisper Power service department for
advice.
•
Blocked injector.
Have the injector tested and cleaned if necessary.
•
Loss of compression by wear out or
damage
Repair by Whisper Power service
Engine runs irregularly.
•
Unsuitable contaminated fuel
•
Lack of fuel.
Fill up with fuel or replace by better quality.
