Midea MSG-09CR-QC3 Service Manual page 8

Outdoor unit
Power relay control
The unit has 3 mins delay between continuously ON/OFF operations.
Low ambient kit
The unit can operate in cooling mode at low ambient temperature conditions.
Low noise air flow system
Bird tail propeller fan makes the outdoor unit run more quietly.
Hydrophilic aluminum fin
The hydrophilic fin can improve the heating efficiency at operation mode.
4 way valve control
It is only operated in the heating operation mode except defrosting operation.
Discharge pipe temperature protect
Anti-rust cabinet
Made from electrolytic zinc steel sheet and anti-rust coated components.
Valve protection
It protects the valves and prevents water from dripping.
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Service manual