Function Details
SiBE281013
44
Function and Control
3.2.20 Protection Control by Overall Current
Monitors the overall current and restricts the upper limit compressor operating frequency to
prevent circuit breakers from exceeding the rated capacity.
Upper limit current (A)
Takes the following values depending on the outside temperature.
Also varies depending on model.
3.2.21 Freeze-up Prevention Control
The thermostat turns OFF due to indoor unit heat exchanger temperature in order to avoid
formation of ice on the indoor unit heat exchanger.
(For details, refer to “Freeze-up Prevention Control”.)
3.2.22 Shortage of Refrigerant Detection Control
When judged that the deficiency in performance has been caused by the shortage of refrigerant,
the abnormal stop is activated with the error code “
U0
” being displayed on the remote controller.
3.2.23 Piping and Wiring Incompatibility Detection Control
When the connecting pipe and the transmission connecting line are connected each to a
differing outdoor unit, the abnormal stop is activated with the error code “
UF
” being displayed on
the remote controller.
3.2.24 Pump Down Residual Operation (Only for RZQG100-140LV1B)
Conducts pump down residual operation when compressor stops to collect refrigerant in
evaporator for preventing liquid refrigerant from remaining in the evaporator.
Contents of Control
Compressor: 70 Hz
Electronic expansion valve: 0 pls
Ending Condition
RZQG71LV1B
RZQG71-140LV1B
A
16.0 A
25.0 A
B
8.9 A
22.0 A
C
6.0 A
20.0 A
Normal operation
Outdoor unit current
≤
upper
limit current value
Outdoor unit current >
upper limit current value
&
Outdoor unit current
≤
upper limit
current value
Upper limit compressor operating
frequency = Maximum frequency
Outdoor unit current
> upper limit current value
Upper limit compressor operating frequency
–1 step/6 sec.
Upper limit compressor operating frequency
+1 step/2 min.
Current B
Current A
Current C
25
Outdoor air temperature (˚C)
28
43
50
Overall current
(A)
30 seconds elapsed with residual operation
Lp < 0.2 MPa
OR
