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Only for training and service purposes

LGE Internal Use Only

Function

Guaranteed Temperature range(Error occurs out of guaranteed temperature range)

IDU : 18 ~ 32 °C

ODU : 0~ 43 °C

In case the function is not used, set the dip S/W OFF and reset the power.

NOTE : If occur the indoor unit error, that indoor unit operate in fan mode.

But don't display the indoor unit number that occurred an error.

4.7 ITR(Heating)

This function is checking process for normal operation of parts and system On operating system.

• Saved data can check using LGMV.

Start

All IDU operation on Fan mode

on 1 minute

Check Temp. Condition

All IDU operation(refrigerant

check) and save data

(All-1) IDU operation and save data

1 IDU operation and save data

Switchover 4way valve

Judge IDU EEV

Stop operation and judge

the result

System off

LG MULTI V IV ARNU07GTU 2 Series User Manual

Questions and Answers: