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3.16 Handling air conditioner
3.16.4
Check, maintain machine equipped with air conditioner
When carrying out inspection of a machine equipped with an air
conditioner, see the "Maintenance schedule chart (4-24)" and
carry out inspection according to the table.
3.16.5
Other functions
Self-diagnostic function
It is possible to carry out troubleshooting of the various sensors
and equipment used on the air conditioner.
1. Press OFF switch (1). The temperature setting and air flow
display on the liquid crystal display portion go out and opera-
tion stops.
S
T
2. If the "
" and "
" parts of temperature setting switch (3)
are kept pressed at the same time for at least 3 seconds, the
troubleshooting mode is displayed on the liquid crystal dis-
play.
Monitor display and failure mode
Display Failure mode
E--
No failure
E11
Disconnection in recirculated air sensor
E12
Short circuit in recirculated air sensor
E13
Disconnection in fresh air sensor
E14
Short circuit in fresh air sensor
E15
Disconnection in water temperature sensor
E16
Short circuit in water temperature sensor
E18
Short circuit in sunlight sensor
E21
Disconnection in vent sensor
E22
Short circuit in vent sensor
E43
Abnormality in vent damper
E44
Abnormality in air mix damper
E45
Abnormality in FRESH/RECIRC air damper
E51
Abnormality in refrigerant pressure
When more than one failure is detected, press the "
T
"
" portion of temperature setting switch (3) to display the
failures in turn.
After completing the troubleshooting, press OFF switch (1)
again to return to the normal display.
If any abnormality is detected by the self-diagnostic function, ask
your KOMATSU distributor to carry out inspection and repair.
3-88
S
" or
Operation
GK018232
GK018234
PW180-7E0 – VEAM400102
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