Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 146

[5-2 Outdoor Unit Control ]
(2) Defrost operation
Outdoor unit
HBC
HBC or Sub HBC VB3
* The compressor frequency is fixed at 60Hz for 3 minutes after the start of the defrost operation.
* The compressor frequency is fixed at 60Hz when the shell bottom SH (TH15 - Te) ≤ 10ºC [18ºF].
BS_05_M
Compressor frequency
Outdoor unit fan
SV1a
LEV2a, 2b, 2c
LEV2d
LEV4
LEV9
21S4a, 21S4b, 21S4c
SV2
Dip switch setting
LEV1
LEV2
LEV3
SV1
21S4Ma
21S4Mb
Pump1
Pump2
Heating Thermo-ON
Heating Thermo-OFF
Cooling Thermo-ON
Cooling Thermo-OFF
Model
(E)M200, (E)M250, (E)M300
models
(E)M350, (E)M400 models
(E)M450 models
(E)M500 models
ON (open)
(E)M200 - (E)M300: 41, (E)M350 - (E)M500: 20
ON (open)
Heat recovery defrost
SW1-9 OFF
3000
3000
41
3000
OFF (close)
OFF
ON
Command value 100%
Command value 100%
Scheduled control
C800 or H800
0
Scheduled control
0
Compressor frequency
79Hz
107Hz
121Hz
147Hz
Stopped
3000
0
480
OFF
Bypass defrost
SW1-9 ON
41
41
41
3000
ON (open)
OFF
ON
Scheduled control
Scheduled control
Scheduled control
Scheduled control
0
Scheduled control
0
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chapter 5 -