Protection Control; Discharge Temperature Control - LG AVNH-EL Service Manual

Outdoor Units

3. Protection control

3.1 Discharge Temperature control

3.1.1 The outline of Discharge Temperature control
This function prevents the damage of COMP according to EEV Comp On/Off control.
- The EEV Comp On/Off control is predicted the Temp. of COMP according to the Temperature of the
Discharge pipe.
3.1.2 The particular contents of Discharge Temperature control
1) The Discharge Temp.of the outdoor_unit_COMP(COMP TOTAL DISCHARGE SENSOR) ≥ 80°C
: LEV OPEN (10PULSE/MIN )
2) The Discharge Temp.of the outdoor_unit_COMP(COMP TOTAL DISCHARGE SENSOR) ≥ 90°C
: LEV OPEN (20PULSE/MIN )
3) The Discharge Temp.of the outdoor_unit_COMP(COMP TOTAL DISCHARGE SENSOR) < 80°C
:LEV control according to regular control logic
4) The Discharge Temp.of the outdoor_unit_COMP(COMP TOTAL DISCHARGE SENSOR) ≥ 105°C
: Stop the COMP at once and remains stopped for 3 minutes.
: sign the Error code (Error Mode 33).
5) System will stop if this situation occurs 5 times in 1 hour and error code will be generated.
❈ Control Temp. and LEV Pulse can be different for each model.
136 Universal System Air Conditioner
Discharge pipe Temperature
105°C
LEV OPEN (20PULSE/MIN )
90°C
LEV OPEN (10PULSE/MIN )
70°C
COMP OFF
COMP ON