Mitsubishi SRR60ZJ-S, Service Manual

Page: 41 / 162

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40
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'10 • SCM-SM-094
'09•SRK-DB-087D
(18) Serial signal transmission error protection
(a) Purpose:
(b) Detail of operation:
(19) Rotor lock
(20) Outdoor fan motor protection
(21) Outdoor fan control at low outdoor temperature
Cooling
(a) Operating conditions:
(b) Detail of operation:
(c) Reset conditions:
Heating
(a) Operating conditions:
(b) Detail of operation:
(c) Reset conditions:
Outdoor air temperature > 10˚C
Outdoor air temperature <= 10˚C
Outdoor fan
Outdoor air temperature > 16˚C
Outdoor air temperature <= 16˚C
Lower limit speed
Cooling
(a) Start condition: When the outdoor air temperature (Th2) has risen higher than 41°C for 30 seconds continuously while the
compressor is operating.
(b) Contents of control: The outdoor unit fan tap is brought up by 3 steps (Higher limit is 6th tap.)
(c) Release condition:
When the compressor is turned off or the outdoor heat exchanger temperature (Th1) has dropped lower
than 40°C.
Heating
(a) Start condition:
When the outdoor air temperature (Th2) has risen higher than 13°C for 30 seconds continuously while the
compressor is operating.
(b) Contents of control:
The outdoor unit fan tap is brought down by 3 steps (Lower limit is 2nd tap.)
(c) Release condition:
When the compressor is turned off or the outdoor heat exchanger temperature (Th1) has dropped lower
than 10°C.
(22) Outdoor unit fan control at overload
40 41
ON
Under control
OFF
Normal operation
10 13
ON
Under control
OFF
Normal operation
Outdoor air temperature( )
C
Outdoor heat exchanger temperature( )
C
º
º
40 41
ON
Under control
OFF
Normal operation
10 13
ON
Under control
OFF
Normal operation
Outdoor air temperature( )
C
Outdoor heat exchanger temperature( )
C
º
º