Sharp AE-X12PSR, Service Manual, Page: 43 / 73

SHARP(CHINA)INVESTMENT CO.,LTD
9. Display E9 (Firstly display P0 or P9, then change to E9)
Problem symptom Display E9 (Firstly display P0 or P9, then change to E9)
Cause Intelligent power module of drive and module fault
Malfunction No. Content of diagnosis Action
If this code is displayed when the compressor is
started for several seconds or even not started,
check the compressor connection for correctness
If no insert wrong, replace the intelligent power module
Check if the outdoor module is
tightly installed onto the radiating
fins and if the silicone is applied
evenly
Fix the screws again if loose.
Check the system pressure. Recharge refrigerant if the pressure is low. Discharge
some refrigerant if the pressure is too high.
Check the outdoor ventilation and if
there is any obstruction that affects
the normal radiating of the air
conditioner.
Install to the position as required in the Insallation
manual and ensure the air inlet and outlet of the outdoor
unit is smooth.
1 Re-energize
and check
the
protection
code on
display.
Firstly
display P0
“P0”
appears
when the
air
conditioner
is working
The above inspections are normal,
but the fault remains unsolved
Replace the intelligent power module
If this code is displayed when the compressor is
started for several seconds or even not started,
check the compressor connection for correctness
If no insert wrong, replace the intelligent power module
When the compressor is restarted immediately
after stop, this might also cause P9 protection
because the cooling system is not stable.
Try starting the air conditioner again after a longer period
of stop
Cooling / heating is normal
during run
Replace the intelligent power module
2 Re-energize
and check
the
protection
code on
display.
Firstly
display P9
P9 appears
after the air
conditioner is
started and
has run for a
period of time
If the cooling / heating is
abnormal, check the
compressor wiring for
correctness.
Insert again if loose.
10. Display EE
Problem symptom Display EE
Cause EEPROM fault
Malfunction No. Content of diagnosis Action
1 Shut off the power and suplyes again,if EE dispay again: Replace outdoor power source board
11. Display P1
Problem symptom Display P1
Cause Overvoltage / undervoltage protection
Malfunction No. Content of diagnosis Action
1 Test the supply voltage if it is between 160V ̚ 260V ˄ AC ˅ . It is normal protection if exceeding this range.
2 Test if the voltage between L and N terminal of outdoor unit is
within 160V ̚ 260V ˄ AC ˅ .
It is normal protection if exceeding this range.
3 If the voltage is normal Replace the outdoor power source board
12. Display E0 ǃ E5
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