Elba R410A Guía para resolver problemas descargar pdf (Pagina 133)

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Only for training and service purposes

LGE Internal Use Only

Outdoor Units

3.3 Inverter Protection control(2)

3.3.1 Function

: Power module failure protection by checking the temperature of heat sink.

There is a temperature sensor for checking the heat sink temperature.

3.3.2 Heat sink sensor failure error

Short Check : if temperature ≥130°C

Open Check : if temperature < - 30°C

System will go in self diagnosis (error 65) is displayed and product stops.

3.3.3 Heat sink temperature control

a) Heat sink temperature < T2 : No limitation on compressor frequency

b) T2 ≤ heat sink temperature < Toff : Compressor frequency down by 5 Hz

c) Heat sink temperature ≥ Toff : Compressor will be off.

System will stop if this situation occurs 5 times in 1 hour and error code will be generated also self diagnosis will

start.

If high temperature situation occurs 5 times in 1 hr system counts 1 error and after that 4 times if this situation

occurs system stops and give error code.

If the temperature reached Toff condition system will count 5 times after that and system will stop with error

code.

COMP

Toff=85°C

T2=75°C

OFF

Set

frequency

Set

frequency

Set

frequency

Heat Sink temp

5 Hz

Down

5 Hz

Down

T1=70°C

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Elba R410A Guía para resolver problemas Pagina 133