Sanyo SPW-U485H User Manual

4-3
4
2) Maximum and Minimum Frequency Control
The compressor's inverter frequency is controlled in accordance with the model and operation mode.
The maximum and minimum frequencies for each model are shown in the table below.
* There are cases in which frequency is limited with other control functions depending on operational conditions,
so operations are not always carried out in accordance with the maximum frequencies listed below.
<Single-phase>
Type 256 366 486
Maximum Frequency (Hz)
Cooling 98.0 87.0 78.0
Heating 103.2 95.2 80.0
Minimum Frequency (Hz)
Cooling 15.0* 18.0* 20.0*
Heating 15.0* 18.0* 20.0*
<3-phase>
Type 256 366 486 606
Maximum Frequency (Hz)
Cooling 63.0 87.0 78.0 80.0
Heating 69.0 95.2 80.0 85.0
Minimum Frequency (Hz)
Cooling 28.2 28.2 20.0* 20.0*
Heating 28.2 28.2 20.0* 20.0*
* There are cases in which the frequency is set at 24.0Hz~28.0Hz to protect the compressor in accordance with
outdoor air temperature and indoor loads.
3) Current Release Control
The inverter frequency is controlled so that the current value for the inverter compressor is less than the  gure
listed in the table below only in the cooling mode in order to prevent abnormal increases in the inverter circuit
located within the outdoor unit's electrical box.
(1) Current release control with primary current : The limited values are modi ed in accordance with outdoor
air temperature.
<Single-phase> <3-phase>
Type 256 366 486 Type 256 366 486 606
Is(A)
Cooling 17.0 21.0 28.5
Is(A)
Cooling 4.8 6.2 12.0 13.5
Heating 17.5 22.0 28.5 Heating 4.8 6.2 13.0 15.0
NOTE
The limited values are lowered when the outdoor air temperature is higher than 40 in the cooling mode
and higher than 14 in the heating mode.
4) Cooling High-Load Prevention Control
This control is performed to limit the inverter frequency in order to restrict abnormal increases in pressure and
high-load operations in the cooling mode. In accordance with the temperature of the outdoor heat exchanger
temperature sensors (C1, C2), such controls are performed as halting the operations of the indoor unit,
decreasing the inverter frequency and restricting its increase, etc. If the temperature max (C1, C2) exceeds
64 , operations of the indoor unit are halted and then restarted 3 minutes later. If this start/stop activity is
repeated 10 times consecutively, alarm "P20" (cooling high-load error) occurs.
max. (C2, C1)
b
a
c
d
e
Outdoor unit operations halted
Frequency decreased
Frequency increases prevented
Frequency increased slower than normal
Normal operations (no control)
<Single-phase>
Type 256 366 486
a646461
b605955
c585753
d575651
e535349
<3-phase>
Type 256 366 486 606
a 64646161
b 64645757
c 55555555
d 55555353
e 55555151
SM830160-03ClassicPAC-iA4.ind33SM830160-03ClassicPAC-iA4.ind33 2010/02/1610:29:302010/02/1610:29:30

Sanyo SPW-U485H Specifications

General

Brand	Sanyo
Model	SPW-U485H
Category	Air Conditioner
Language	English