[
IX
Troubleshooting ]
- 207 -
HWE1113B
GB
[4] Troubleshooting Principal Parts
High-Pressure Sensor
-1- High-Pressure Sensor (63HS1, PS1)
1. Compare the pressure that is detected by the high pressure sensor, and the high-pressure gauge pressure to check
for failure.
By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by the high-
pressure sensor appears on the LED1 on the control board.
(1) While the sensor is stopped, compare the gauge pressure and the pressure displayed on self-diagnosis LED1.
1) When the gauge pressure is between 0 and 0.098MPa [14psi], internal pressure is caused due to gas leak.
2) When the pressure displayed on self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the connector may be defective or
be disconnected. Check the connector and go to (4).
3) When the pressure displayed on self-diagnosis LED1 exceeds 4.15MPa [601psi], go to (3).
4) If other than 1), 2) or 3), compare the pressures while the sensor is running. Go to (2).
(2) Compare the gauge pressure and the pressure displayed on self-diagnosis LED1 while the sensor is running. (Com-
pare them by MPa [psi] unit.)
1) When the difference between both pressures is within 0.098MPa [14psi], both the high pressure sensor and the control board
are normal.
2) When the difference between both pressures exceeds 0.098MPa [14psi], the high pressure sensor has a problem. (perfor-
mance deterioration)
3) When the pressure displayed on self-diagnosis LED1 does not change, the high pressure sensor has a problem.
(3) Remove the high pressure sensor from the control board to check the pressure on the self-diagnosis LED1.
1) When the pressure displayed on self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the high pressure sensor has a
problem.
2) When the pressure displayed on self-diagnosis LED1 is approximately 4.15MPa [601psi], the control board has a problem.
(4) Remove the high pressure sensor from the control board, and short-circuit between the No.2 and 3 connectors
(63HS1, PS1) to check the pressure with self-diagnosis LED1.
1) When the pressure displayed on the self-diagnosis LED1 exceeds 4.15MPa [601psi], the high pressure sensor has a problem.
2) If other than 1), the control board has a problem.
2. Pressure sensor configuration
The high pressure sensor consists of the circuit shown in the figure below. If DC 5V is applied between the red and the black
wires, voltage corresponding to the pressure between the white and the black wires will be output, and the value of this voltage
will be converted by the microcomputer. The output voltage is 0.071V per 0.098MPa [14psi].
The pressure sensor on the body side is designed to connect to the connector. The connector pin number on the body side
is different from that on the control board side.
Body side
Control board side
Vcc
Pin 1
Pin 3
Vout
Pin 2
Pin 2
GND
Pin 3
Pin 1
O
N
S
W1
1
2
3
4
5
6
7
8
9
1
0
O
FF
0
0
.
5 [73]
1.
0 [
1
45]
1.
5 [
21
8]
2.
0 [
2
90]
2.
5 [363]
3
.
0 [435]
3
.
5 [508]
4
.
0 [580]
4
.
5 [653]
0 0
.
5
1
1.
5
2
2.
5 3 3
.
5
O
utput
voltage
(V)
Pressure
(MPa
[
psi
]
)
Conne
c
tor
63
H
S
1
1
2
3
1
2
3
G
ND
(Bla
ck
)
Vout
(W
h
ite)
V
cc
(DC
5
V)(Red)
Pressure
0 ~ 4
.1
5
MPa
[60
1psi
]
Vout
0
.
5 ~ 3
.
5
V
0
.
07
1
V
/
0
.
098
MPa
[
1
4
psi
]
Summary of Contents for City Multi CMB-WP108V-G
Page 1: ...AIR CONDITIONER 2014 Service Handbook PURY WP200 WP250YJM A CMB WP108V G Model 3rd edition ...
Page 11: ... 2 HWE1113B GB ...
Page 27: ... I Read Before Servicing 18 HWE1113B GB ...
Page 29: ... 20 HWE1113B GB ...
Page 57: ... 48 HWE1113B GB ...
Page 70: ... III Outdoor Unit Components 61 HWE1113B GB 2 Power supply circuit board ...
Page 71: ... III Outdoor Unit Components 62 HWE1113B GB ...
Page 73: ... 64 HWE1113B GB ...
Page 81: ... IV Remote Controller 72 HWE1113B GB ...
Page 83: ... 74 HWE1113B GB ...
Page 89: ... 80 HWE1113B GB ...
Page 97: ... 88 HWE1113B GB ...
Page 127: ... 118 HWE1113B GB ...
Page 135: ... VIII Test Run Mode 126 HWE1113B GB ...
Page 137: ... 128 HWE1113B GB ...
Page 253: ... 244 HWE1113B GB ...