Daikin SkyAir RZR-P Series Service Manual page 155

SiUS281117
Troubleshooting
1: Voltage measurement point
CHECK 6
148
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
The
high pressure
NO
sensor is connected to
X17A of outdoor unit
PCB (A1P).
YES
The
relationship
between the VH
and high pressure is
normal (see ∗1) when
YES
voltage is measured
between X17A pins (1)
and (3) of outdoor
unit PCB
(A1P).
NO
Outdoor unit PCB A1P
GND
Micro-computer
A/D input
CHECK 6
Refer to P.179.
Troubleshooting by Remote Controller
Measure DC voltage here.
Connect the high pressure sensor
and turn ON again.
Replace the outdoor unit PCB
(A1P).
Replace the high pressure sensor.
Red
Black
White
Service Diagnosis