-
327
-
'12 • PAC-T-173
(g)
Over-current protection current safe controls I, II
Detecting the outdoor unit inverter input (primary) current and the output (secondary) current, if the current values exceed
setting values, the compressor speed (frequency) is controlled to protect the inverter.
Retention
Reduces frequency
at each minute.
Reset
B
A
Current (A)
1
2
1
4
1
6
1
8
2
0
2
2
2
4
5
0
4
0
6
0
7
0
8
0
9
0
1
0
0
1
1
0
1
2
0
1
3
0
Control
or reset v
alv
e (A)
Comp
ressor sp
eed (frequenc
y) (rp
s)
(F
ig
. C)
T
he control v alue “ A” and the reset v alue v ary dep
ending
on the comp
ressor sp
eed.
Reset valv e B
Control v
a lv e A
(h)
Power transistor temperature protection
1) Protective control
If the power transistor temperature (detected with TIP) exceeds the setting value, the compressor speed (frequency)
is controlled to suppress the rise of power transistor temperature.
Retention
Reduces compressor frequency
at each minute.
Note (1) Value in ( ) are for the single phase
100-140 models.
Reset
81(70)
85(73)
Power transistor temp. (°C)
(i)
Anomalous power transistor current
1)
Prevents over-current on the inverter. If the current value in the power transistor exceeds the setting value, the
compressor stops.
2) If the current value in the power transistor exceeds the specified value and the compressor stops 4 times within 30
minutes, E42 is displayed on the remote controller and it enters the anomalous stop mode.
(j)
Anomalous inverter PCB
If the power transistor detects any anomaly for 15 minutes, including the stop of compressor, E51 is displayed on the
remote controller and it enters the anomalous stop mode.
(k)
Anti-frost control by the compressor frequency control
1) If the indoor unit heat exchanger temperature (detected with Th
I
-R) exceeds the setting value at 4 minutes after the
start of compressor, the compressor speed (frequency) is controlled to initiate the anti-frost control of indoor unit
heat exchanger.
2) When there are 3 indoor unit heat exchanger temperatures (Th
I
-R), the lowest temperature is detected.
1.5
3.5
Retention
Reduces compressor frequency
at each minute.
Reset
Indoor unit heat exchanger temp. (°C)
3) Regarding the anti-frost control by the operation stop, refer to the operation control function by the indoor unit
controller and the cooling, dehumidifying frost prevention of page 302.
Model
Cooling
Heating
Control
value A
Reset
value B
Control
value A
Reset
value B
Primary
current
side
71
15.0
14.0
16.0
15.0
100
11.0 (23.0)
10.0 (22.0)
11.0 (23.0)
10.0 (22.0)
125,
140
11.0 (23.0)
10.0 (22.0)
11.0 (25.0)
10.0 (24.0)
Secandary
current
side
71
13.0
12.0
13.0
12.0
100
11.5 (Fig.C) 10.5 (Fig.C) 11.5 (Fig.C) 10.5 (Fig.C)
125,
140
11.5 (Fig.C) 10.5 (Fig.C) 11.5 (Fig.C) 10.5 (Fig.C)
Note (1) Value in ( ) are for the single phase models.
Summary of Contents for FDC Series
Page 95: ... 94 12 PAC T 173 Models FDT100VF 125VF 140VF H H H H H C B A F G D G PJF000Z285 ...
Page 98: ... 97 12 PAC T 173 Models FDEN60VF 71VF C 2 C 1 A B A B D C 1 C 2 C 1 C 2 E G F B PFA003Z817 ...
Page 113: ... 112 12 PAC T 173 b Wireless remote controller RCN E1R 60 17 150 Unit mm ...
Page 278: ... 277 12 PAC T 173 ー K ...
Page 346: ... 345 12 PAC T 173 Power PCB 1BSU OVNCFS 4GRNCEG VJG 2 ...
Page 518: ... 517 12 PAC T 173 3 5 SUPER LINK E BOARD SC ADNA E F SL2NA E and SL3N AE BE to control ...
Page 519: ... 518 12 PAC T 173 ...
