Troubleshooting
4-32 Samsung Electronics
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1. When power is on, it checks the power status used for 3-phase power compr essor.
When the order of 3-phase L1(R) – L2(S) – L3(T) is changed (Reverse phase) or there is a phase that does not supply power (Loss phase),
it will display
and the air conditioner will st op operating.
1) Check the voltage on L1(R) – L2(S) phase/ L1(R) – L3(T) phase/
L2(S) – L3(T) phase.
2) When there is any terminal that does not have normal voltage,
check the external power o
f the air conditioner and take
appropriate measures.
3) If 3-phase power is normal check the phase of the power wire
using 3-phasetester. If it shows reverse pha
se, change the curr en t
power wire connection.
4) After completing above, press reset key (K3) then check the
power again.
3-phase tester
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