Daikin RXYQ72, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller SiUS39-601
160 Troubleshooting
2.32
“
JC
”
Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor
Remote
Controller
Display
JC
Applicable
Models RXYQ72M, 96M
Method of
Malfunction
Detection Malfunction is detected from pressure detected by low pressure sensor.
Malfunction
Decision
Conditions When the suction pipe pressure sensor is short circuit or open circuit.
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 P241.
(V2808)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
The
relationship
between the
∗
1
VH and low pressure is
normal (see
∗
2) when voltage
is measured between X45A pins
(2) and (3) of outdoor unit
PC board (A1P)
(see
∗
1).
Replace the low pressure sensor.
Connect low pressure sensor
property and restart system.
NO
NO
Replace outdoor unit PC board
(A1P).
YES
YES
The low
pressure sensor is
connected to X45A (blue)
of outdoor unit PC
board (A1P).