Elba R410A Anleitung zur Fehlerbehebung PDF herunterladen (Seite 128)

Outdoor Units

- 132 -

Only for training and service purposes

LGE Internal Use Only

2.2 Low ambient control

Low ambient cooling case : In this situation outdoor fan works in ON/OFF control.

: If the pipe temperature 0°C and it is falling rapidly in that case compressor will run for 5 min & then it will go in

low ambient control. (❈ Temp. value can be different for each model.)

❈ After the system is stopped by CT cut or heat sink cut-off then the cycle returns to the normal condtiond control.

2.3 Oil return control

2.3.1 Operating Contion

1) When the continuous running time is over 3hr.(option), oil returning operation is made for 3min.

In case of the initial operation, oil returning operation is made, after completing initial operation.

2) After defrost and oil returning operation, the continuous running time is resetted.

2.3.2 Operation Process

1) EEV-Full open, Hot gas bypass valve-On

2) Compressor Step-70Hz (Option)

3) Reversing valve-Off(Process of Off/On, follows defrost operating.)

4) Outdoor Fan-Low step

(T1 = 0)°C

(T2 = 0)°C

Outdoor pipe temp

O/D fan

Set speed

Off

Set speed Set speed

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Elba R410A Anleitung zur Fehlerbehebung Seite 128