Mitsubishi Heavy Industries FDURA301 User Manual

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(4) Operation control function by the outdoor controller
(a) Compressor Starting Control (FDCA801, 1001 models only)
The controls in 1) and 2) are performed at the moment when compressor operating conditions are met.
1) If the operating mode is the same as the mode the first time the compressor started after the power was turned ON or the
same as the operating mode the previous time.
The oil return solenoid valve (SV6) and expansion valve auxiliary solenoid valve (SV7 (in the 1001 model only)) go
ON, then the compressor starts 5 seconds later.
2) If the operating mode changes from the previous operating mode.
The 4-way valve switches after 10 seconds, each solenoid valve in item 1) goes ON, then 20 seconds later, the compres-
sor starts.
(b) Outdoor fan control
⽧FDCA301~ 601 models only
1) Outdoor fan tap control during cooling
The outdoor fan is controlled according to the outdoor heat exchanger temperature (sensed by Tho-R) and outdoor
air temperature (sensed by Tho-A).
B-Zone
22
Outdoor air temperature (˚C)
B
Lo
UHi
Hi
25
A-Zone
A
Hi
Zone
C
D
E
2) Outdoor fan tap control during heating
The outdoor fan tap is controlled in accordance with the outdoor heat exchanger temperature (sensed by Tho-R)
and the outdoor air temperature (sensed by Tho-A).
3) Outdoor fan tap control during heating high pressure control
a) If the compressor is started with an outdoor air temperature (sensed by Tho-A) of 12ºC or higher, the outdoor
unit’s fan motor is turned OFF for 4 minutes, then after 4 minutes of operation, control switches to outdoor
fan tap control in item 2).
b) If the outdoor air temperature (sensed by Tho-A) becomes 12 ºC or lower with the outdoor fan motor OFF,
operation continues for 4 minutes with the outdoor fan motor OFF.
⽧FDCA801, 1001 models only
1) Fan speed and fan motor control contents during control
E Zone
C Zone
50
4339
46
D Zone
Outdoor heat exchanger temperature (˚C)
B-Zone
3
Outdoor air temperature (˚C)
5
A-Zone
B
UHi
Hi
A
Hi
Zone
C
D
D Zone
Ñ 3
Outdoor heat exchanger temperature (˚C)
0
C Zone
FM01
FM02
Fan speed
4 th speed
3 th speed
2 th speed
1 th speed
0 th speed
Hi
Hi
Lo
Lo
OFF
Hi
Lo
Lo
OFF
OFF

Mitsubishi Heavy Industries FDURA301 Specifications

General

Brand	Mitsubishi Heavy Industries
Model	FDURA301
Category	Air Conditioner
Language	English