Negative Phase, Open Phase - Daikin VRV K Manual

SI-95.BOOK Page 103 Friday, March 31, 2000 10:59 AM
Si-95

2.27 Negative Phase, Open Phase

U U U U 1 1 1 1
Remote Controller
Display
I Power supply negative phase
Supposed Causes
I Power supply open phase
I Defect of outdoor PC board A1P
Troubleshooting
Troubleshooting Inverter K Series
There
is an open phase at
YES
the power supply terminal
section (L1, L2, L3, N) of
the outdoor unit.
NO
Operation
is normal if one place
YES
of power supply line phase is
replaced.
NO
Troubleshooting
Fix the open phase. Requires
inspection of field power supply section.
Negative phase
Disposal of the problem is completed
by phase replacement.
Replace outdoor unit PC board A1P.
(VF053)
103