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Indoor unit display
LED STATUS
P1
Outdoor voltage protection
Indoor unit display
LED STATUS
P2
Compressor top protection against temperature
Is the power supply good?
Be sure the power supply is
normal when using the units
NO
YES
Replace the outdoor e-box.
Revise the power and retest.
Is voltage normal?
NO
YES
Is all
connection good?
NO
Revise the power and retest.
YES
Is the wiring to compressor
right?
YES
Check the moduler if some
components blow out or be
failure?
YES
Repair or replace the moduler.
YES
Is it breakdown between
P-N, P-V, P-W, N-V,N-W or
V-W of inverter moduler?
YES
Replace the moduler.
YES
Check the compressor.
