Mitsubishi Heavy Industries SRK20HG Technical Manual

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33
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Over heat of compressor
[Gas shortage, defective discharge
pipe sensor]
Indoor fan motor error
[Defective fan motor,
defective PCB]
Trouble of outdoor unit
[Compressor faulty, compressor
wiring disconnected.]
Overload operation?
Is the refrigerant level proper?
Is the wiring to the compressor
connected securely?
Check the compressor.
(Disconnection of coil windings)
YES
YES
YES
NO
Short circuit, Check if the heat
exchanger is dirty, stopped up, etc.
Adjust the level to the proper level.
Connect it securely.
NO
NO
Is discharge pipe sensor
resistance value good?
Is sufficient quantity of refrigerant
circulated?
Defective outdoor unit PCB
YES
YES
NO
NO
YES
NO
Gas shortage
Connector connection check, resistance
value check, replacement of discharge pipe
sensor
Does trouble persist after
charging gas?
Clogged capillary tube,
etc.
YES
YES
NO
NO
Is connector connection good?
Is voltage applied to fan motor?
Defective fan motor
Correct connector
connection.
Defective indoor unit
PCB

Mitsubishi Heavy Industries SRK20HG Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SRK20HG
Category	Air Conditioner
Language	English