Control For Outdoor Unit Fan; Cooling Operation; Heating Operation; Operation Control Function By The Outdoor Controller - Mitsubishi FDC 6 Series Service Manual

(c) Operation control function by the outdoor controller (Only FDC(P)208~508 type, FDC808, 1008 type)
1)

Control for outdoor unit fan

a) Cooling Operation
The speed of the fan for the outdoor unit is controlled by the temperature of the heat exchanger (Tho-R detection) and
the outdoor air temperature (Tho-A).
Models FDC(P)208~508 type
B Zone
15
Outdoor air temperature (°C)
Description of control for fan for outdoor unit
Zone
Models FDC808, 1008 type
B Zone
20
Outdoor air temperature (°C)
Description of control for fan for outdoor unit
Zone
b)

Heating Operation

1 Stop control for outdoor fan
When the high pressure switch (63H
switch.
63H settings
2
Models FDC208~1008 type
2 Tap control for outdoor fan
When the high pressure switch (63H
heat exchanger thermistor (Tho-R) and the detected heat of the outdoor air temperature thermistor (Tho-A).
B Zone
9
Outdoor air temperature (°C)
Description of control for fan for outdoor unit
Zone
Note (1) When the fan for the outdoor unit is started when the outdoor air temperature is more than 12 °C, it will operate at high speed for 3
seconds and then switch to low speed. After operating a low speed for 4 minutes, it will be transferred to controlled speed.
12
F Zone
A Zone
18 31 33
Model
Fan motor
C Zone
A Zone D Zone
E Zone
C Zone
B Zone D Zone
E Zone
F Zone
A Zone
25
Fan motor FM (Left)
01
A Zone Hi
Hi
C Zone
B Zone
Lo
D Zone
) operates, the fan for the outdoor unit is stopped to control the high pressure
2
2.5 OFF/2.06 ON (MPa)
[25.5 OFF/21 ON (kgf/cm
) is closed, the outdoor fan is controlled by the detected heat of the outdoor
2
E Zone
A Zone
11 17 19
Model
FDC(P)208~308 type
Fan motor
C Zone
A Zone
D Zone
B Zone
C Zone
E Zone
D Zone
E Zone
32
Heat exchanger temperature (°C)
FDC(P)208~308 type FDC(P)408, 508 type
FM FM (Up)
0 01
Hi Hi
Hi Hi
Hi Hi
Hi Hi
Hi Hi
Lo Lo
Hi Hi
D Zone
44
Heat exchanger temperature (°C)
FM (Right)
02
Hi
OFF
OFF
Models FDCP208~508 type
2.79 OFF/2.26 ON (MPa)
2 )]
[28.5 OFF/23 ON (kgf/cm
D Zone
-3
Heat exchanger temperature (°C)
FDC(P)408, 508 type
FM FM (Up)
0 01
Hi Hi
Hi Hi
Hi Hi
Lo Lo
Hi Hi
C Zone
D Zone
48 57 63
FM (Lo)
02
Hi
OFF
OFF
Hi
OFF
OFF
Hi
C Zone
48
2 )]
C Zone
0
FDC808,1008 type
FM (Lo) FM (Left) FM
02 01
OFF Hi
Hi Hi
Hi Hi
OFF Hi
OFF Hi
(Right)
02
OFF
Hi
Hi
OFF
Hi