Daikin VRV Inverter K Series Manual page 318

SI-05C.BOOK Page 304 Monday, November 6, 2000 4:13 PM
Troubleshooting
3.5 Outdoor Unit: Actuation of Low Pressure Switch
E E E E 4 4 4 4
Remote Controller
Display
Supposed Causes
Trobleshooting
∗1: Voltage measurement point
∗2: Refer to the pressure sensor, pressure - voltage characteristics table.
Refer to Pressure Sensor Voltage Output / Detected Pressure Characteristics on P366
304
Abnormal drop of low pressure (0 kg/cm² [0 MPa])
Defect of low pressure sensor
Defect of outdoor unit PC board
Low
pressure at stop due YES
to malfunction is
0.0 kg / cm ²
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? ∗2
NO
Out of gas, refrigerant
system clogging, wiring and
piping wrong connection
Replace the low pressure
sensor.
Replace outdoor unit PC
board INV outdoor unit: A1P
Constant speed outdoor unit:
EC
: http://splitoff.ru/tehn-doc.html
Troubleshooting PLUS Series
SiE-05C
(VF139)