[
VII
Control ]
- 102 -
HWE1113B
GB
Refrigerant Recovery Control
-6- Refrigerant Recovery Control
The refrigerant recovery control function controls the refrigerant flow at the HBC controller during heating operation to keep
the refrigerant from collecting inside the HBC controller.
It is also performed during cooling operation to prevent an excessive amount of refrigerant from accumulating in the outdoor
heat exchanger.
Starting criteria for the refrigerant recovery cycle (during Cooling-only, Cooling-main, Heating-only, or Heating-main
mode)
The refrigerant recovery mode starts when all of the following conditions are met:
1) When 5 minutes have passed in the Heating-only or Heating-main mode or 30 seconds have passed in the Cooling-only or
Cooling-main mode since the completion of the previous refrigerant recovery cycle AND the when following conditions are
met.
TH4 > 105°C [221°F]
2) When the port is not in the 4-minute restart delay mode
Starting criteria for the refrigerant recovery cycle (during Cooling-only, Cooling-main, Heating-only, or Heating-main
mode)
The opening of LEV1 and LEV2 on the HBC is increased.
Capacity Control of Outdoor Fan
-7- Capacity Control of Outdoor Fan
(1) Control method
Depending on the capacity required, the rotation speed of the outdoor unit fan is controlled by the inverter to keep a constant
condensing temperature of (outside tempe10°C [18°F]) during cooling operation and a constant evaporation temper-
ature of (0°C [32°F] =0.71 MPa [103psi]) during heating operation.
(2) Control
Outdoor unit fan stops while the compressor is stopped (except in the presence of input from snow sensor).
The fan operates at full speed for 5 seconds after start-up.(Only when TH7<0°C [32°F])
The outdoor unit fan stops during defrost operation.
(3) Outdoor unit heat exchanger capacity control patterns
Model
Operation
mode
Operation
patterns
Solenoid valve
SV4a
SV4b
SV4c
SV4d
SV5c
WP200 and
WP250 models
Cooling-
only
Cooling-
main
1
OFF
OFF
OFF
ON
ON
2
OFF
OFF
OFF
OFF
ON
3
OFF
OFF
ON
OFF
ON
4
OFF
ON
ON
OFF
ON
5
ON
ON
ON
OFF
OFF
Heating-
only
1
ON
ON
ON
OFF
OFF
Heating-
main
1
ON
ON
ON
ON
OFF
2
ON
ON
ON
OFF
OFF
Defrost
1
ON
ON
ON
OFF
OFF
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 ...