Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor - Daikin VRV K Manual

SI-95.BOOK Page 99 Friday, March 31, 2000 10:59 AM
Si-95

2.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor

J J J J A A A A
Remote Controller
Display
I Defect of high pressure sensor system
Supposed Causes
I Connection of low pressure sensor with wrong connection.
I Defect of outdoor unit PC board.
Troubleshooting
∗1: Voltage measurement point
∗2: Refer to pressure sensor, pressure / voltage characteristics table on P140.
Troubleshooting Inverter K Series
The high
pressure sensor is
NO
connected to X22A (red) of
outdoor unit PC
board (A1P).
YES
The
relationship
between the
VH and high pressure
is normal (see ∗2) when
YES
voltage is measured between
X22A pins (1) and (3) of
outdoor unit PC
board (A1P)
(see ∗1).
NO
Troubleshooting
Connect the high pressure sensor and
turn on again.
Replace outdoor unit PC board A1P.
Replace the high pressure sensor.
(VF049)
99