Mitsubishi Heavy Industries SRK20MA-S User Manual

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② The outdoor heat exchanger sensor (Th0-R) meets one of the following conditions:
A) When the actual rotate speed of the compressor N ≥ 62 rps: Th0-R ≤ -5℃;
B) When the actual rotate speed of the compressor N < 62 rps: Th0-R ≤ -4℃;
③ Outdoor air temp. sensor (Th0-A): Th0-A ≤ 3℃;
④ The compressor runs for over 7 minutes continuously.
(2) Ending conditions:
135 seconds after the system is switched to the defrosting mode, the defrosting running is
canceled when one of the following conditions is met:
① Outdoor heat exchanger sensor (Th0-R): Th0-R ≥ 13℃;
② The elapsed time of defrosting running is 15±0.5 min.
(3) Operation time pattern of various functional parts in defrosting control:
Defrosting
Compressor
4-way valve
Outdoor fan
Operation of outdoor
functional parts
5 sec.
speed
Usual control
Usual control
Enter
EEV openng
EEV control
EEV openng
EEV control
End running
EEV openng
Usual heating
Usual heating
Defrosting
running state
Beginning
conditions met
Enter defrosting
running
Ending
conditions
met
End defrosting
running
Heat-retaining
Heat-retaining
Heat-retaining
ineffective
Indoor fan
RUN lamp
Operation of indoor
functional parts
Indoor → outdoor
communication
Verhical/horizontal flap
Response
Flahsing
(heat-retaining)
Control
Set position
In the defrosting control, even when the compressor
displays OFF, the heat-retaining displaying is effective.
Singnal of
compressor
Defrosting
singnal

Mitsubishi Heavy Industries SRK20MA-S Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SRK20MA-S
Category	Air Conditioner
Language	English