116
The outdoor fan turns ON according to "Compressor ON" commands given from each indoor unit.
❈
The outdoor fan is controlled at High speed for the first 10 seconds
after start-up. In addition, the outdoor fan speed temporarily
changes to High during the compressor and inverter protection.
1.Compressor shell overheat protection
When a single unit is operating in a system with the LEV fully open and the discharge temperature at 95
;
or above, the
outdoor fan speed changes to High. It is released when the number of operating indoor units has changed, the opera-
tion mode has changed, or the power has turned OFF.
2.Inverter overheat protection
When the fin temperature thermistor detects 88
;
or above, the indoor fan speed changed to High. It is released when
the compressor has turned OFF.
3.After defrosting during heating operation, the outdoor fan speed shifts to the next higher level.
I. e. Low to Me
(
Me to High
)
The compressor operational frequency and the LEV opening are controlled depending on the number of operating indoor
units.
1.Compressor operational frequency
• The variable range of compressor operational frequency changes according to the operation signal (capacity code and
temperature difference) given from the operating indoor unit (s).
When the number of operating indoor units is reduced during heating operation, the operational frequency will decrease
by 20 Hz in one minute. After that, the operational frequency will return to the variable status.
2.LEV opening
• The LEV opening varies according to the operation signal given from the operating indoor unit (s).
When the number of operating indoor units is reduced during heating operation, the LEV opening will be fixed to the
current valve for one minute. After that, the LEV opening will return to the variable status.
(1)
When a single indoor unit is operating, the system operates in the mode as selected by that indoor unit.
(2)
When two indoor units are operating in the same mode, the system operates in that mode.
(3)
Simultaneous COOL and HEAR operation is unavailable within a system. The indoor unit activated earlier has the
priority to decide the operation mode of the system. The other unit enters the standby status when it receives the
order to operate in a different mode. To operate these units in the same mode from such a status, reset both units
to the same operation mode, turned them off, and then turn them back on.
(4)
Simultaneous COOL and DRY operation is available within a system. In this case, the outdoor unit operates in the
COOL mode. (The outdoor unit operates in the DRY mode only when all the indoor units are operating in the DRY
mode.)
Cooling
Heating
1
2
3
4
5
6
7
8
9
10
Total
capacity code
One
unit
Low
Two
unit
Low
Three
unit
Me
Four
unit
Number 05
operating
indoor
unit
Me
Me
MXZ-32RV- E1
MXZ-18RV- E1
One
unit
Two
unit
Number of
operating
indoor unit
Hi
Hi
Hi
Hi
Indoor unit
capacity class
Capacity code
07/09
1
12(13)
3
18
4
11-10.3.Control by the number of operating indoor unit
11-10.4.Selection of operation mode
11-10.5.Outdoor fan control
