Trouble Shooting Table Engine - Whisper Power W-SQ20 User Manual

Failure code Problem
Communication error between the panel end the generator
COMMUNICATION
Starter battery voltage too low
LOW START BAT
No output battery charging voltage
ALTERNATOR
AC-alternator temperature is to high (generators for mobile applications only)
AC-ALTERN. TEMP
Coolant temperature is too high
WATER TEMP
Oil pressure failure
OIL PRESSURE
Generator AC output voltage is either too high or too low
AC VOLTAGE
Generator is in overload
HIGH CURRENT
Output frequency of the generator is too low
FREQUENCY
5.2.2

Trouble shooting table engine

PROBLEM
Diesel engine fails to crank, the
starter makes clicking noises, or
the engine cranks very slowly
No reaction at all
No reaction or clicking noises,
or slow cranking
Starter is turning engine
smoothly, but engine fails to
start
Engine runs irregularly.
EN / W-SQ20 for mobile applications / April 2010
CAUSE
• Almost certainly this is an electrical
problem. Display will indicate "LOW
START BAT"
• Starter battery switched "OFF".
• Faulty fuse on the control panel
• Starter battery voltage insufficient
(battery too weak).
• Too thick engine lubricating oil.
• Wiring control system faulty
• Starter motor faulty
• Out of fuel or faulty fuel, water in the
fuel.
• Fuel solenoid is not opening (no "click"
can be heard).
• Fuel lift pump is not working.
• Fuel filter is blocked.
• Air in fuel lines.
• Wrong valve clearance.
• Low compression because of dirty
valves.
• Blocked injector.
• Loss of compression by wear out or
damage
• Unsuitable contaminated fuel
• Lack of fuel.
SOLUTION
The problem must be an electric malfunction.
Check position of the battery switch and switch
"ON".
Replace fuse
Check battery voltage. Recharge the battery.
Inspect battery terminals and cables for a good
electrical connection (inspect against corrosion,
tattered wires, etc.)
Change oil for a lower viscosity.
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.
Repair the starter motor
Fill up with fuel or replace with better quality.
Check wire connections and circuitry to solenoid.
(Refer to DC wiring diagram)
Check fuel filter and fuel lift pump: clean or
replace if necessary.
Bleed air from fuel system (refer to maintenance
section).
Adjust valve clearance,
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.
Have the injector tested and cleaned if necessary.
Repair by Whisper Power service
Fill up with fuel or replace by better quality.
TROUBLE SHOOTING
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