Samsung AM072/096/120/144FXVAFH, Service Manual

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Troubleshooting
Samsung Electronics 4-11
غ
Heating Pump Out
ـ
Operation for the repair of the Individual outdoor unit, the outdoor unit refrigerant emissions to the indoor part.
ـ
Liquid pipe service valve and the gas pipe service valve operation, the operator manually need to close.
ـ
Observe low pressure using View Mode of K4 button if compressor operate.
If low pressure goes down below about 0.2 MPa.g : Immediately lock the gas side service valve, Pump Out operation is shut down.
(Pump out operation shut down : K1 button once more press or K3 button one time press)
ـ
If operation of low pressure goes down below 0.1 MPa.g : Will be stopped automatically for the protection of the compressor.
How to Initiate K1 Tact Switch 3 times~6 times
Compressor 60Hz
Indoor Unit Whole Operation (The set temperature=40
ఁ
(104
ሥ
) )
4Way Valve ON (Heating Mode)
Main EEV Operation side : 700 Step (Stop side : 0 step)
Maximum Operation Time 10 minutes
Protection Control
Conduct the discharge temperature, high pressure control. (Low pressure protection control is not
carried out)
ఐ
Low pressure is outside normal limits : Operation is shut down after gas pipe manually closed.
Etc.
Entry after safety start. (Only the corresponding Outdoor Unit operation.)
To pump out more than 2 : Except communication between Outdoor Unit of relevant set after working
for one, remainder set makes Pump Out add.
غ
Cooling Pump Down
ـ
Recover the refrigerant of Indoor Unit and Piping to outdoor side.
ـ
Liquid pipe service valve and the gas pipe service valve operation, the operator manually need to close.
ـ
If the installation of the long pipe : Any refrigerant into the outdoor unit can not be recovered, therefore should use a separate container.
ـ
Observe low pressure using View Mode of K4 button if compressor operate.
If low pressure goes down below about 0.2 MPa.g : Immediately lock the gas side service valve, Pump Out operation is shut down.
(Pump out operation shut down : K1 button once more press or K3 button one time press)
ـ
If operation of low pressure goes down below 0.1 MPa.g : Will be stopped automatically for the protection of the compressor.
How to Initiate K2 Tact Switch 3 times
Compressor Address No.1 Outdoor Unit - 60Hz (Other Outdoor Unit COMP OFF)
Indoor Unit Whole Operation (The set temperature=3°C(37.4
ሥ
) )
4Way Valve OFF (Cooling Mode)
Main EEV Operation side : 2000 Step , Stop side : 2000 step
Maximum Operation Time 30 minutes
Etc.
Does not conduct the operation of the special operation, and protection control.
Pressure and temperature is outside normal limits : Operation is shut down after gas
pipe manually closed.
(However, all current limit control, and protection and control of IPM CompDown control is performed.)