– 201 –
Yes
s
e
Y
s
e
Y
oN
o
N
No
Yes
No
[F23]
Connector: CN500, White
[F24]
Yes
No
No
Yes
No
Yes
[F16]
[F22]
esuaCedoc kcehC Check code name
esuaC
edo
c kcehC Check code name
e
suaCedoc k
cehC Check code name
e
sua
Cedoc kceh
C
Check code name
Outdoor pressure sensor
miswiring (Pd, Ps)
1. High-pressure Pd sensor and low pressure sensor
Ps are exchanged.
2. Output voltage of each sensor is zero.
Ps sensor error
Output voltage error of Ps sensor
Pd sensor error
Output voltage error of Pd sensor
TD3 sensor error
TD3 sensor Open/Short
Are connection of
Pd sensor and Ps
sensor connectors
correct?
Is connection of Ps
sensor connector
correct?
Are output
voltage characteristics
of Ps sensor
normal?
Is there no leakage
from SV4 valve?
Is not
refrigerant bypassed from
discharge to suction of
4-way valve?
Are output
voltage characteristics
of Pd sensor and Ps
sensor normal?
Are Pd/Ps
output values
Pd>Ps during
compressor
operation?
Correct connection of connectors.
Pd sensor: CN501, Red
Ps sensor: CN500, White
Correct connection of
connector.
Sensor error
Replace
Sensor error
Replace
Check compressor.
.evlav yaw-4 kcehC.
e
v
l
av 4VS e
c
a
l
peR
Check compressor.
Check outdoor I/F P.C. board.
Defect
Replace
(1) Pressure (Check joint) by pressure gauge
(2) Pressure display on 7-segment display
(3) Output voltage of I/F P.C. board
If (1) and (2), (3) are different, an error of pressure
sensor itself is considered.
If (2) and (3) are different, check interface P.C. board.
(1) Pressure (Check joint) by pressure gauge
(2) Pressure display on 7-segment display
(3) Output voltage of I/F P.C. board
If (1) and (2), (3) are different, an error of pressure
sensor itself is considered.
If (2) and (3) are different, check interface P.C. board.
Value can be confirmed by 7-segment
display function on outdoor I/F P.C. board.
Pd SW01/02/03=1/1/2
Ps SW01/02/03=1/2/2
It is output voltage error of Pd sensor. Check disconnection of connection of connector (Pd sensor: CN501, red)
circuit and output voltage of sensor.
If the sensor is normal, replace outdoor I/F P.C. board.
This error code means detection of Open/Short of TD3 sensor. Check disconnection of circuit for connection of
connector (TD3 sensor: CN504, blue) and characteristics of sensor resistance value. (See “Outdoor unit temperature
sensor characteristics” on “8-9. Sensor Characteristics”.)
If sensor is normal, replace outdoor I/F P.C. board.
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