Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor - Panasonic Urban Multi MX1R Series Service Manual

Troubleshooting
3.23 Outdoor Unit:
JA JA JA JA
Remote Controller
Display
„ Defect of high pressure sensor system
Supposed Causes
„ 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 on P587.
178
Malfunction of Discharge Pipe Pressure Sensor
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
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 Urban Multi "MX1, ME1 Series" Using R-22
PACD011001C2
Connect the high pressure sensor and
turn on again.
Replace outdoor unit PC board A1P.
Replace the high pressure sensor.
(VF049)