Mitsubishi 6M70 Workshop Manual page 7

(2) Full automatic air conditioner
(2.2) Reading and erasing diagnosis codes
• To read a diagnosis code, observe how may times the LED for
inspection flashes and how long each illumination lasts.
• The duration of illumination differs between the first and second
digits.
• Second digit: 1.5 sec.
• First digit: 0.5 sec.
• A diagnosis code consists of the flashing of second digit and the
flashing of first digit in that order. If a diagnosis code has "0" in
the second digit, only the first digit will be displayed.
• When two or more faults occur at a time, relevant diagnosis
codes are displayed repeatedly starting from the first Code.
• To erase a diagnosis code from the memory after inspection,
disconnect negative (–) battery cable and leave it disconnected
for more than 30 seconds.
(2.1) Connection of LED for inspec-
tion
• Move the starter switch to the LOCK
position.
• Connect the LED for inspection to the
Multi-Use Tester connector.
CAUTION
• Air conditioner electronic control
unit and control panel has a backup
power supply to keep diagnostic
check results in memory. If this
power supply is cut off, with battery
cables disconnected, for example,
stored data are erased.
• Air conditioner electronic control
unit and control panel enters into
the mode of control during fault im-
mediately a fault occurs. In this
mode, control is effected to mini-
mize trouble arising from the fault.
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