Komatsu D61EX-24 Operation & Maintenance Manual page 308

OPERATION
Problem
Charge level caution lamp does not
light up when engine is stopped.
(Starting switch is at ON position.)
Outside of electrical heater is not
warm when touched by hand.
Malfunction of air conditioner
Engine does not start.
(L04 lights up on monitor.)
Main causes
Defective monitor
Defective wiring
Defective wiring
Wire breakage in electrical intake air
heater
Malfunction of heater relay
Blown fuse
Insufficient battery charge
Defective air conditioner switch
Defective blower switch
Defective compressor
Damaged data in the controller
Other system troubles
TROUBLES AND ACTIONS
Remedy
Replace. (*)
Check, repair. (*)
Check, repair. (*)
Replace. (*)
Check, repair heater relay. (*)
Check, repair. (*)
Charge the battery.
Replace air conditioner switch. (*)
Replace blower switch. (*)
Replace. (*)
Check, repair. (*)
Check, repair. (*)
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