-
-
'12 • PAC-T-173
(12) Serial signal transmission error protection
(a)
Purpose:
Prevents malfunction resulting from error on the indoor
l
outdoor signals.
(b)
Detail of operation:
If the compressor is operating and a serial signal cannot be received from the indoor control with
outdoor control having serial signals continues for 7 minute and 35 seconds, the compressor is
stopped.
After the compressor has been stopped, it will be restarted after the compressor start delay if a serial
signal can be received again from the indoor control.
(13) Rotor lock
If the motor for the compressor does not turn after it has been started, it is determined that a compressor lock has occurred and
the compressor is stopped.
(14) Outdoor fan motor protection
If the outdoor fan motor has operated at 75 rpm or under for more than 30 seconds, the compressor and fan motor are stopped.
(4) Lower limit speed
2)
If the temperature of 115ºC is detected by the sensor on the discharge pipe, then the compressor will stop immediately.
When the discharge pipe temperature drops and the time delay of 3 minutes is over, the unit starts again within 1
hour but there is no start at the third time.
(9)
Current safe
(a)
Purpose:
Current is controlled not to exceed the upper limit of the setting operation current.
(b) Detail of operation:
,QSXW FXUUHQW WR WKH FRQYHUWHU LV PRQLWRUHG ZLWK WKH FXUUHQW VHQVRU ¿[HG RQ WKH SULQWHG FLUFXLW
board of the outdoor unit and, if the operation current value reaches the limiting current value, the
compressor command speed is reduced.
If the mechanism is actuated when the compressor command speed is less than 30 rps, the compres-
sor is stopped immediately. Operation starts again after a delay time of 3 minutes.
(10) Current cut
(a)
Purpose:
Inverter is protected from overcurrent.
(b) Detail of operation:
Output current from the inverter is monitored with a shunt resistor and, if the current exceeds the
setting value, the compressor is stopped immediately. Operation starts again after a delay time of
3 minutes.
(11) Outdoor unit failure
This is a function for determining when there is trouble with the outdoor unit during air conditioning.
7KHFRPSUHVVRULVVWRSSHGLIDQ\RQHRIWKHIROORZLQJLQLWHPLVVDWLV¿HG2QFHWKHXQLWLVVWRSSHGE\WKLVIXQFWLRQLWLVQRW
restarted.
(a)
When the input current is measured at 1 A or less for 3 continuous minutes or more.
(b)
If the outdoor unit sends a 0 rps signal to the indoor unit 3 times or more within 20 minutes of the power being turned on.
Cooling
Heating
Lower Limit Speed
25 rps
32 rps
Item
Model
(15) Outdoor fan control at low outdoor temperature
(a)
Cooling
1)
Operating conditions:
When the outdoor air temperature (TH2) is 22ºC or lower continues for 30 seconds while the
compressor command speed is other than 0 rps.
2)
Detail of operation:
After the outdoor fan operates at A speed for 60 seconds; the corresponding outdoor heat exchanger
temperature shall implement the following controls.
Outdoor temperature > 10˚C
Outdoor temperature <
= 10˚C
2nd speed
Outdoor fan
1st speed
f
Value of A
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 ...
