LG RCWFH Series Instruction Manual page 34

34
Category Description
Block low oil run
Block low voltage
Block high con-
denser
Block low evapo-
rator pressure
Block low evapo-
rator refrigerant
temperature
Block high com-
pressor outlet
temperature
Block
control
Block high bearing
temperature
Low cold water
temperature block
control
Compressor
surge current
block
Motor overcurrent
block control
High motor wind-
ing temperature
block
Condensing block
control
Cause
Oil temperature ≤ operation oil
Low temperature setting value
The guide closes the vane when a com-
pressor motor voltage goes below low
voltage block setting -(100-setting)/2.
The guide vane closes when a con-
denser pressure goes above high pres-
sure block setting + (100- setting)/2.
The guide vane closes when an evapo-
rator pressure goes below low pressure
block setting -(100-setting)/2.
The guide vane closes when an evapo-
rator temperature goes below low tem-
perature block setting -(100-setting)/2.
The guide vane closes when a com-
pressor outlet temperature goes above
high temperature block setting - (100-
setting)/2.
The guide vane closes when a bearing
temperature goes above high tempera-
ture block setting + (100-setting)/2.
The guide vane closes when a cold
water temperature goes below low
temperature block setting - (100-set-
ting)/2.
The guide vane closes when current
goes above a setting value for more
than the setting (setting number/3)
within setting time.
The guide vane closes when a com-
pressor motor current reaches set-
ting*105% to make the current go
below the setting.
The guide vane closes when a motor
winding temperature goes above high
temperature block setting + (100-set-
ting)/2.
1. The refrigerant gets condensed in oil
2. Viscosity of oil is low
Action
Display low oil temperature
block control caution message
Display low voltage block con-
trol caution message
Display high condenser pres-
sure block control caution
message
Display low condenser pres-
sure block control caution
message
Display low evaporator refrig-
erant temperature block con-
trol caution message
Display high compressor outlet
temperature block control cau-
tion message
Display high bearing tempera-
ture block control caution mes-
sage
Display low cold water outlet
temperature block caution
message
Display compressor surge cur-
rent block control caution mes-
sage
Display compressor motor
overcurrent block control cau-
tion message
Display high motor winding
temperature block control cau-
tion message
Display condense block control
Status
Caution
Caution
Caution
Caution
Caution
Caution
Caution
Caution
Caution
Caution
Caution
Caution
(Operation
unavailable)