Outdoor Unit Fan Control At Overload - Mitsubishi Heavy Industries SRK20ZJX-S Service Manual

(c) Reset conditions:
Heating
(a) Operating conditions:
(b) Detail of operation:
(c) Reset conditions:

(22) Outdoor unit fan control at overload

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
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
Normal operation
OFF
40
Outdoor air temperature(
Normal operation
OFF
40
than 40°C.
Outdoor air temperature(
Normal operation
OFF
10
Outdoor heat exchanger temperature(
Normal operation
OFF
10
Outdoor heat exchanger temperature(
than 10°C.
Under control
ON
41
)
Under control º
C
ON
41
Under control
º )
C
ON
13
º ) C
Under control
ON
13
) C
º
40
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'10 • SCM-SM-094