Maeda CC1908S-1, Operation Manual

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M A E D A Crawler Crane 6.20 TROUBLESHOOTING
5/2020 CC1908S-1 6-109
AIR-CONDITIONING
Abnormal phenomenon Main causes Corrective action
Control panel does not work.
Blown fuse Replace
Defective wiring Inspect/repair (
★)
Defective control panel Inspect/replace (
★
)
Air flow is weak
Internal or external filter clogging
Refer to "6.17.6 MAINTENANCE
EVERY 500 HOURS" on P. 6-60
and clean.
Blower deformation or damage Replace (
★
)
Insufficient battery charge Recharge the battery.
Defective blower motor Replace (
★
)
Defective power transistor Replace (
★
)
Blown fuse Replace
No air blows out.
Blown fuse Replace
Defective blower relay Replace (
★
)
Defective blower motor Replace (
★
)
Defective power transistor Replace (
★
)
Defective air-conditioner panel Replace ( ★ )
Defective ground Inspect/repair (
★)
Defective wiring Inspect/repair (
★)
Blown fuse Replace
No cool air
Defective exterior air
temperature sensor
Inspect/clean/replace (
★
)
Air mix link detached Inspect/repair ( ★)
A/C compressor belt loose or
damaged
Refer to "6.17.5 MAINTENANCE
EVERY 250 HOURS" on P. 6-54
and adjust the tension or replace
(
★
).
Defective compressor Replace (
★
)
Defective magnet clutch Repair/replace (
★
)
Defective servo motor Replace (
★
)
Defective wiring Inspect/repair ( ★)
Blown fuse Replace
No warm air
Air mix link detached Inspect/repair (
★)
Insufficient of cooling water
Refer to "5.2.2 OPERATIONS
AND CHECKS BEFORE
STARTING ENGINE" on P. 5-6
and ensure the cooling water
level is correct.
Heater core damage Replace ( ★ )
Defective servo motor Replace (
★
)
Defective wiring Inspect/repair (
★)
Blown fuse Replace