Haier Smart Power Series Service Manual page 204

5.6 Checking current outdoor unit error code
If there is malfunction on the outdoor unit, the LED digital display will flashing like this repeating pattern:
Error code number flashing
Example:
Refer to the outdoor unit's trouble shooting table to get what the error code means and follow the recommend.
5.7 View previous error record (diagnosis mode)
Step1: Press and hold the MODE button for 5 seconds then release, then the LED digital display will show the
current mode and will keep flashing.
Step2: Scroll pages to view the other modes by UP or DOWN button.
Step3: Continue with step 2, find mode "dig", press and hold the SET button for 3 seconds, then release.
Step3: Continue with step 3, press and hold the SET button for another 3 seconds, then release, the LED digital
display will show the error code last time.
Step4: Scroll pages to view the other last 10 times error code by UP or DOWN button. If only N (N≤10) error been
recorded, you can just find last N times' error record.
Fig.7.1 shows steps above.
LED digital display extinguished
Extinguished
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Smart Power