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SiE-05C
Troubleshooting
Troubleshooting PLUS Series
311
3.15
Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor
Remote Controller
Display
JJJJAAA
A
Supposed Causes
Defect of high pressure sensor system
Connection of low 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.
Refer to Pressure Sensor Voltage Output / Detected Pressure Characteristics on P366
YES
YES
Connect the high pressure
sensor and turn on again.
Replace outdoor unit PC
board A1P.
Replace the high pressure
sensor.
The
high pressure
sensors connected to X22A
(red) of outdoor unit
PC board.
The
relationship
between the
∗
1
VH and high pressure
is normal (see
∗
2) when
voltage is measured between
X22A pins (1) and (3) of
outdoor unit PC
board (A1P)
(see
∗
1).
NO
NO
(VF149)
SI-05C.BOOK Page 311 Monday, November 6, 2000 4:13 PM
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