[
IX
Troubleshooting ]
- 265 -
HWE0713A
GB
(5) In the case of SV5b (Bypass valve)
This solenoid valve closes when energized (when the relay is on).
This valve turns off for five minutes after the completion of the defrost cycle, or when SV9 is on turned ON and the value of
63HS1 is greater than 3.5 MPa [507psi] during Heating-only or Heating-main operation at the minimum frequency. The valve
position can be determined by measuring and monitoring the changes in the pipe temperature on the downstream of SV5b
while the unit is de-energized. When the valve is open, high-temperature gas refrigerant passes through the pipe. Do not at-
tempt to check the pipe temperature by touching the pipe.
(6) In the case of SV5c (Bypass valve)
This solenoid valve opens when energized (when the relay is on).
This valve turns on, depending on the conditions during Cooling-only or Cooling-main operation. Check for proper operation
on the LED and by listening for the operation sound of the solenoid valve.
(7) In the case of SV9 (Bypass valve)
This solenoid valve opens when energized (when the relay is on)
This valve turns on when the value of 63HS1 is greater than 3.5 MPa [507psi] during Heating-only or Heating-main operation
at the minimum frequency. The valve position can be determined by measuring and monitoring the changes in the pipe tem-
perature on the downstream of SV9 while the unit is energized. When the valve is open, high-temperature gas refrigerant
passes through the pipe. Do not attempt to check the pipe temperature by touching the pipe.
-4- Outdoor Unit Fan
To check the revolution of the fan, check the inverter output state on the self-diagnosis LED, as the inverter on the outdoor
fan controls the revolutions of the fan.The revolution of the fan is approximately 680rpm(P250 - P350 and EP200 mod-
els),790rpm(P400, EP250, and EP300 models) at full speed.
When starting the fan, the fan runs at full speed for 5 seconds.
When setting the DIP SW1 as shown in the figure below, the inverter output [%] will appear. 100% indicates the full speed
and 0% indicates the stopping.
As the revolution of the fan changes under control, at the interphase or when the indoor unit operation capacity is low, the
revolution of the fan may change.
If the fan does not move or it vibrates, fan inverter board problem or fan motor problem is suspected. Refer to IX [4] -7- (2) [5]
"Check the fan motor ground fault or the winding." and IX [4] -7- (2) [6] "Check the FAN board failure."
-5- LEV
LEV operation
LEV are stepping-motor-driven valves that operate by receiving the pulse signals from the indoor and outdoor unit control
boards.
(1) Indoor LEV and BC controller LEV
The valve opening changes according to the number of pulses.
1) Control boards and the LEV
2) Pulse signal output and valve operation
1 2 3 4 5 6 7 8 9 10
ON
SW1
Indoor unit connector CN60
Control board CNLV1,CNLV2
Connector
4
3
2
1
Intermediate connector
Red
Brown
Blue
Orange
Yellow
White
Outdoor control board
DC12V
6
5
4
3
2
1
Drive circuit
4
3
2
1
LEV
M
5
2
1
3
4
6
Red Orange
White
Brown
Blue
Yellow
Note. The connector numbers on the intermediate connector and the connector on the control board differ. Check the color of the lead wire
to judge the number.
5
2
1
3
4
6
Содержание PURY-(E)P200
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Страница 63: ... II Restrictions 54 HWE0713A GB ...
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Страница 80: ... III Outdoor Unit Components 71 HWE0713A GB 2 RELAY BOARD RELAY 4 board 3 RELAY BOARD RELAY 10 board ...
Страница 81: ... 72 III Outdoor Unit Components GB HWE0713A ...
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Страница 91: ... 82 IV Remote Controller GB HWE0713A ...
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Страница 104: ... 95 HWE0713A GB VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 9 2 Principal Parts and Functions 10 ...
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Страница 121: ... 112 VI Refrigerant Circuit GB HWE0713A ...
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Страница 315: ... 306 IX Troubleshooting GB HWE0713A ...
Страница 316: ... 307 HWE0713A GB X LED Monitor Display on the Outdoor Unit Board 1 How to Read the LED on the Service Monitor 309 ...
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