[
VIII
Troubleshooting ]
- 158 -
HWE1410A
GB
Troubleshooting according to the remote controller malfunction or the external input error
Both for MA remote controller and ME remote controller
Both for MA remote controller and ME remote controller
1. Phenomena
Although cooling operation starts with the normal remote controller display, the capacity is not enough
(1) Cause, check method and remedy
Cause
Check method and remedy
1.
Compressor frequency does not rise sufficiently.
Faulty detection of pressure sensor.
Protection works and compressor frequency does
not rise due to high discharge temperature
Protection works and compressor frequency does
not rise due to high pressure
Pressure drops excessively.
(1)
Check pressure difference between the detected
pressure by the pressure sensor and the actual
pressure with self-diagnosis LED.
-> If the accurate pressure is not detected, check
the pressure sensor. (Refer to the page on Trouble-
shooting of Pressure Sensor in outdoor unit service
handbook)
Note: Lower inlet pressure by the low pressure sensor
than the actual pressure causes insufficient capac-
ity.
SW4 setting (SW6-10: OFF)
(2)
Check temperature difference between the evapo-
rating temperature (Te) and the target evaporating
temperature (Tem) with self-diagnosis LED.
Note: Higher Te than Tem causes insufficient capacity.
SW4 setting (SW6-10: OFF)
Note: Protection works and compressor frequency does
not rise even at higher Te than Tem due to high dis-
charge temperature and high pressure.
At high discharge temperature:
Refer to 1102 in outdoor unit service handbook
At high pressure:
Refer to 1302 in outdoor unit service handbook
2.
HBC controller LEV1 and 2 actuation failure
Refer to the page of LEV troubleshooting ([4] -1-
).(page 166)
Insufficient refrigerant flows due to LEV malfunc-
tion (not enough opening) or protection works and
compressor frequency does not rise due to pres-
sure drop.
High pressure sensor
Low pressure sensor
SW4
SW4
ON
1
2
3
4
5
6
7
8
9
10
ON
1
2
3
4
5
6
7
8
9
10
SW4
SW4
ON
1
2
3
4
5
6
7
8
9
10
ON
1
2
3
4
5
6
7
8
9
10
Evaporating temperature Te
Target evaporating temperature Tem
ON
1
2
3
4
5
6
7
8
9
10
The figure at left shows that the switches 1 through 5 are set to ON and 6 through 10 are set to OFF.
0000002394.book 158 ページ 2016年1月12日 火曜日 午後4時49分
Содержание CITY MULTI CMB-WP1016V-GA1
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Страница 27: ... I Read Before Servicing 18 HWE1410A GB ...
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Страница 50: ... III HBC Controller Components 41 HWE1410A GB 4 Top side 1 CMB WP1016V GA1 2 CMB WP108V GA1 VB3f VB3e ...
Страница 52: ... III HBC Controller Components 43 HWE1410A GB 2 Top side 1 CMB WP1016V GB1 2 CMB WP108V GB1 VB3f VB3e ...
Страница 55: ... III HBC Controller Components 46 HWE1410A GB 2 Power supply circuit board ...
Страница 57: ... 48 HWE1410A GB ...
Страница 67: ... IV Electrical Wiring Diagram 58 HWE1410A GB ...
Страница 68: ... 59 HWE1410A GB V Refrigerant Circuit 1 Refrigerant Circuit Diagram 61 2 Principal Parts and Functions 64 ...
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Страница 117: ... VII Test Run Mode 108 HWE1410A GB ...
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Страница 207: ... VIII Troubleshooting 198 HWE1410A GB ...
Страница 208: ... 199 HWE1410A GB IX LED Monitor Display on the Outdoor Unit Board 1 How to Read the LED on the Service Monitor 201 ...
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Страница 292: ... IX LED Monitor Display on the Heat source Unit Board 283 HWE1410A 0000002394 book 283 ページ 2016年1月12日 火曜日 午後4時49分 ...
Страница 293: ... IX LED Monitor Display on the Heat source Unit Board 284 HWE1410A 0000002394 book 284 ページ 2016年1月12日 火曜日 午後4時49分 ...
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