Daikin VRV Inverter K Series - Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor

SiE-05C Troubleshooting
Troubleshooting Inverter K Series 147
3.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor
Remote Controller
Display
JJ
JJ
CC
CC
Supposed Causes  Defect of low pressure sensor system
 Connection of high pressure sensor with wrong connection.
 Defect of outdoor unit PC board.
Troubleshooting
∗1: Voltage measurement point
∗2: Refer to pressure sensor, pressure/voltage characteristics table on P366.
(VF050)
The
relationship
between the ∗1
VH and low pressure is
normal (see ∗2) when voltage
is measured between X21A pins
(2) and (3) of outdoor unit
PC board (A1P)
(see ∗1).
Replace the low pressure sensor.
Connection of high pressure sensor
with wrong connection.
NO
NO
Replace outdoor unit PC board A1P.
YES
YES
The low
pressure sensor is
connected to X21A (blue)
of outdoor unit PC
board (A1P).
SI-05C.BOOK Page 147 Monday, November 6, 2000 4:13 PM
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