Doosan P425CWJD - Compressor Code 30

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Book: 23227143 (8-24-2010) Rev CPage45
COMPRESSOR CODE 30
High Airend Discharge Temperature
Troubleshooting Steps
Action Result
Step 1:
Check coolers and clean if necessary.
Clogged coolers
Step 2:
Check all harness connections between Wedge and
RT2 temperature sensor.
Repair harness as needed
Step 3:
Disconnect RT2 from harness and plug thermistor
simulator (Part No. 22073878) into the harness
connector. Check WEDGE diagnostic display 6 to
verify temperature value is between -3
o
F and -13
o
F.
If temperature value on display
6 is not between -3
o
F and
-13
o
F, check for WJDing
problems
If temperature value on display
6 is between -3
o
F and -13
o
F,
replace RT2 temperature
sensor
Step 4:
If Steps 1 through 3 checkout OK, replace WEDGE.
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Explanation:
The WEDGE has detected a temperature from RT2 temperature sensor that is
greater than or equal to 248
o
F.
Effect:
Code 30 is a SHUTDOWN condition and will stop the machine. The High Airend
Discharge Temperature diagnostic light will be on solid, the Compressor Malfunction
light will be on solid, and code 30 will be displayed.