Discharge Temperature Control / Inverter Protection Control - LG MULTI V ARUN072BTE4 Service Manual

Discharge Temperature Control
Table 16: Outdoor Unit Discharge Temperature Control.
Temperature Range
Tdis > 230°F
Tdis > 226.4°F
Tdis ≥ 221°F
Tdis ≤ 212°F
Tdis > 212°F
* Frequency Hold = Frequency (or RPM) is not increasing (can decrease).
Tdis = Temperature Discharge.
SC = Subcooling.
SH = Superheating.
Inverter Protection Control
The tables below display the amperage where the system will operate normally, the amperage where the inverter protection control will cause
the frequency to drop, and the amperage where the inverter protection control will shut the system off. AC input current is measured at the
inverter compressor (after the point where the current passes through the noise filter).
Table 17: Inverter Protection Control in Cooling Mode.
System Voltage
Heat Pump Outdoor Units
208-230V
AC Input Current
208-230V
Compressor Current
Heat Recovery Outdoor Units
208-230V
AC Input Current
208-230V
Compressor Current
Table 18: Inverter Protection Control in Heating Mode.
System Voltage
Heat Pump Outdoor Units
208-230V
AC Input Current
208-230V
Compressor Current
Heat Recovery Outdoor Units
208-230V
AC Input Current
208-230V
Compressor Current

Discharge Temperature Control / Inverter Protection Control

Compressor
Off
-5 Hz / 10 seconds
Frequency Hold*
Normal Control
Normal Control
Normal System Operation
Type
4.8 HP
less than 19A
460V less than 22A
less than 24A
460V less than 24A
less than 19A
460V less than 22A
less than 24A
460V less than 24A
Normal System Operation
Type
4.8 HP
less than 19A
460V less than 22A
less than 24A
460V less than 26A
less than ≤19A
460V less than ≤22A
less than ≤24A
460V less than ≤26A
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
PROTECTION CONTROLS
Subcooling EEV
SC, SH Decrease Control
SC, SH Decrease Control
SC, SH Decrease Control
SC, SH Decrease Control
SC, SH Decrease Control
Frequency Will Drop
6.8 HP 4.8 HP
less than 28A more than 19A more than 28A more than 24A more than 32A
less than 30A more than 22A more than 30A more than 22A more than 32A
less than 35A more than 24A more than 35A more than 30A more than 41A
less than 35A more than 24A more than 35A more than 30A more than 41A
less than 28A more than ≥19A more than 28A more than 24A more than 32A
less than 30A more than ≤22A more than 30A more than 22A more than 32A
less than 35A more than ≥24A more than 35A more than 30A more than 41A
less than 35A more than ≤24A more than 35A more than 30A more than 41A
Frequency Will Drop
6.8 HP 4.8 HP
less than 28A more than 19A more than 28A more than 24A more than 32A
less than 30A more than 22A more than 30A more than 22A more than 32A
less than 35A more than 24A more than 35A more than 30A more than 41A
less than 35A more than 26A more than 35A more than 30A more than 41A
less than 28A more than 19A more than 28A more than 24A more than 32A
less than 30A more than 22A more than 30A more than 22A more than 32A
less than 35A more than 24A more than 35A more than 30A more than 41A
less than 35A more than 26A more than 35A more than 30A more than 41A
Indoor Unit EEV
SH Decrease Control
SH Decrease Control
SH Decrease Control
SH Decrease Control
SH Decrease Control
System Will Stop Operation
6.8 HP 4.8 HP
System Will Stop Operation
6.8 HP 4.8 HP
6.8 HP
6.8 HP
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