Haier GE Connect Series, Руководство по обслуживанию

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CONNECT SERIES SERVICE MANUAL
41
ENGLISH
Troubleshooting
“e1” High Pressure Sensor Error
Error display:
ODU main board LED display
Error judgment condition and method:
Sample the AD value of pressure sensor through
pressure sensor detecting circuit and judge the range of
AD value, If the sampling AD value exceeds upper limit
and lower limit in 30 seconds continuously, report the
error.
Possible causes:
• Poor contact between pressure sensor and terminal in
main board interface
• Pressure sensor is abnormal
• Detecting circuit is abnormal
Yes
No
No
Replace the
high pressure
sensor
Start
High pressure sensor error
Check if the high pressure sensor
on main board is inserted on the
socket correctly
Measure the pressure
sensor if its AD value
is normal
Replace the
outdoor main
board
Correctly insert
the pressure
sensor on the
socket
Yes
Yes
Yes
“C4” ODU Jumper Cap Error
Error display:
ODU main board LED display
Error judgment condition and method:
If jumper cap model doesn‘t match with main board,
report the error
Possible causes:
• Jumper cap is not installed
• Jumper cap model is wrong
• Detecting circuit is abnormal
Yes
No
No
Replace the
jumper cap with
correct model
Replace the main
control board
Start
C4 ODU jumper cap error
Find out JUMP printing on the
main board to see if the jumper
cap is installed at this place
Check if the jumper
model is correct
Inspect if the
detecting circuit
is abnormal
Install the
jumper cap