Troubleshooting
Samsung Electronics 227
4-4-3 Pump out operation
Operation for the repair of the Individual outdoor unit, refrigerant emissions to the indoor part.
The operator need to close liquid service valve and the gas service valve manually.
Caution
1. Observe low pressure using View Mode of K4 button if compressor operate.
- If low pressure goes down below about 0.2MPa.g
: Immediately close the gas side service valve, then shut down the Pump Out operation
(Pump out operation shut down : K1 button once more press or K3 button one time press)
- If operation of low pressure goes down below 0.1MPa.g
: Pump down operation will be stopped automatically to protect the compressor.
2. After pump out about 1kg of refrigerant will be remained in the pipe so use pipe cutter to detach the pipe.
(Do not use flame to detach the pipe)
K1 button
How to lnitiate K1 Tact Swithc 3 times~6 times
Compressor 60Hz
Indoor Unit Whole Operation (The set temperature=40
o
C)
4Wasy Valve ON (Heating Mode)
Outdoor Fan Maximum air flow
Main EEV Operation side : 700Step, Stop side : 0Step
Maximum Operation Time 10 minutes
Protection Contol Conduct the discharge temperature, high pressure control.
(Low pressure protection control is not carried out)
※Low pressure is outside normal limite : Operation is shut down after as pipe manually closed.
Etc. Entry after safety start.
(Only the corresponding Outdoor Unit operation.)
To pump out more than 2 : Except communicatio between Outdoor unit of relevant set after
working for one, remainder set makes Pump Out add.
Outdoor unit Main Sub1 Sub2 Sub3
Key number K1
Push time 3 4 5 6
4-4 Case study for trouble shoots (cont.)
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