Daikin FXHQ32MVET [241/370] Refer to p 04

Daikin FXSQ40PVE4 [241/370] Refer to p 04
SiBE311209 Troubleshooting by Indication on the Remote Controller
Service Diagnosis 232
Refer to P.304.
Refer to P.315.
Check if the “high
pressure” value and the
actual measurement value
by pressure sensor are the
same.
NO
YES
Replace the outdoor unit main PCB
(A1P).
·
The high pressure sensor is normal, and the pressure detected with the PCB is also normal.
· The high pressure has really become high.
Remove the causes by which the high pressure has become
high.
1:Make a comparison between the voltage of the pressure sensor and that read by the
pressure gauge.
(As to the voltage of the pressure sensor, make measurement of voltage at the connector,
and then convert it to pressure. )
CHECK 12
Service Checker
Connect the service checker to compare the “high pressure” value and the actual
measurement value by pressure sensor (1) by using the service checker.
CHECK 1
A
2:Make measurement of voltage of the pressure sensor.
+5V
Connector for high
pressure sensor (Red)
X32A
(4)
(3)
(2)
(1)
Red
Black
White
Micro-computer
A/D input
Make measurement of DC
voltage between these wires.
High
pressure
sensor
CHECK 1
CHECK 12

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