Outdoor Unit: Actuation Of Low Pressure Sensor - Daikin VRV K Manual

SI-95.BOOK Page 92 Friday, March 31, 2000 10:59 AM
Troubleshooting

2.16 Outdoor Unit: Actuation of Low Pressure Sensor

E E E E 4 4 4 4
Remote Controller
Display
I Abnormal drop of low pressure (0 kg/cm
Supposed Causes
I Defect of low pressure sensor
I Defect of outdoor unit PC board
Troubleshooting
∗1: Voltage measurement point
∗2: Refer to pressure sensor, pressure - voltage characteristics table on P140.
92
Low pressure
YES
at stop due to malfunction is
2
0.0 kg / cm .
NO
Measure
the voltage (VL)
of X21A pin No. (2) - (3)
YES
of outdoor PC board (A1P). ∗1
Is the relationship
between low voltage
and VL
normal?
NO
2
[0 MPa])
Out of gas, refrigerant system clogging,
wiring and piping wrong connection
Replace the low pressure sensor.
Replace outdoor unit PC board A1P.
Troubleshooting Inverter K Series
Si-95
(VF042)