[
VI
Control ]
- 71 -
HWE1410A
GB
4-way valve control
-2- 4-way valve control
4-way valves (21S4M (a, b)) turn on or off according to the operation mode.
For 21S4Ma, ON indicates switching to the cooling side and OFF indicates switching to the heating side. For 21S4Mb, ON
indicates switching to the heating side and OFF indicates switching to the cooling side. For 21S4Ma, ON indicates switching
to the cooling side and OFF indicates switching to the heating side. For 21S4Mb, ON indicates switching to the heating side
and OFF indicates switching to the cooling side. When energized: ON; When de-energized: OFF
1) Select the installation site carefully, as some noise may be produced when the 4-way valve is switched.
Install the unit in a place where the noise from the unit will not be problem.
(Install the indoor units and HBC controller at least 5m [16-6/16ft] away from each other when installing in a space with low
background noise, e.g., hotel rooms.)
Install the unit in the ceiling of an area that are not always occupied by people, e.g., hallway, office kitchen, restrooms. (Do
not install the unit in the middle of a room.)
2) The elapsed time is used to reduce the switching frequency of the control modes between No. 1 or No. 6 AND No. 3 or No. 4.
3) Capacity control is determined depending on the opening of VB3 that adjusts the water flow rate.
No.
Operation mode
4-way valve control
mode
4-way valve
21S4Ma
21S4Mb
1
Cooling-only
Cooling
ON
OFF
2
Cooling (Half HEX)
OFF
OFF
3
Cooling-main
Cooling-main
OFF
OFF
4
Heating-main
Heating-main
OFF
OFF
5
Heating-only
Warm heating
OFF
OFF
6
Heating
OFF
ON
7
Defrost
Defrost
The status before defrosting
maintained
The status before defrosting
maintained
8
Stopped
Stopped
OFF
OFF
Operation mode change
(Mixture of units in cooling and heating
→ Cooling-only/Heating-only)
Mixture of units in cooling and
heating(No.3 or 4)
(21S4Ma: OFF, 21S4Mb: OFF)
Operation mode
change
Cooling-only
Switches to the mild-cooling control (No. 2).
(21S4Ma: OFF, 21S4Mb: OFF)
The elapsed time since
the control mode is changed
≥ 30 minutes
Switches to the cooling control (No. 1).
(21S4Ma: ON, 21S4Mb: OFF)
No
* Note 3
* Note 2
No
Yes
Yes
Heating-only
Switches to the mild-heating control (No. 5).
(21S4Ma: OFF, 21S4Mb: OFF)
Switches to the heating control (No. 6).
(21S4Ma: OFF, 21S4Mb: ON)
No
* Note 3
* Note 2
No
Yes
Yes
The opening of VB3
is too large.
The elapsed time since
the control mode is changed
≥ 30 minutes
The opening of VB3
is too large.
0000002394.book 71 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 47: ... 38 HWE1410A GB ...
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 ...
Страница 69: ... 60 HWE1410A GB ...
Страница 75: ... 66 V Refrigerant Circuit GB HWE1410A ...
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Страница 117: ... VII Test Run Mode 108 HWE1410A GB ...
Страница 119: ... 110 HWE1410A GB ...
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 ...
Страница 209: ... 200 HWE1410A GB ...
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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