Troubleshooting Si-95
92 Troubleshooting Inverter K Series
2.16 Outdoor Unit: Actuation of Low Pressure Sensor
Remote Controller
Display
EE
EE
44
44
Supposed Causes ■ Abnormal drop of low pressure (0 kg/cm
2
[0 MPa])
■ Defect of low pressure sensor
■ Defect of outdoor unit PC board
Troubleshooting
∗1: Voltage measurement point
∗2: Refer to pressure sensor, pressure - voltage characteristics table on P140.
(VF042)
Low pressure
at stop due to malfunction is
0.0 kg / cm
2
.
Measure
the voltage (VL)
of X21A pin No. (2) - (3)
of outdoor PC board (A1P). ∗1
Is the relationship
between low voltage
and VL
normal?
Out of gas, refrigerant system clogging,
wiring and piping wrong connection
Replace the low pressure sensor.
Replace outdoor unit PC board A1P.
NO
NO
YES
YES
SI-95.BOOK Page 92 Friday, March 31, 2000 10:59 AM
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