-
26
-
◆
50 type
<
I
>
(a)
Operating conditions:
When the outdoor air temperature sensor (Th5) is 4ºC or lower continues for 5 minutes while the
outdoor speed is other than 0 rps.
(b)
Operation content:
When the command speed is less than 22 rps, the command speed is forcibly set at 22 rps.
However, when the thermo becomes OFF, the speed is reduced to 0 rps.
(c)
Reset conditions:
When the outdoor air temperature sensor (Th5) becomes 6ºC or higher.
<
II
>
(a)
Operating conditions:
When the outdoor air temperature sensor (Th5) is 0ºC or lower continuously for 5 minutes while
the outdoor speed is other than 0 rps.
(b)
Operation content:
The outdoor fan motor speed is raised to the next higher speed. (Upper limit 6th speed)
(c)
Reset conditions:
When the outdoor air temperature sensor (Th5) becomes 2ºC or higher.
<
III
>
(a)
Operating conditions:
When the temperature sensed by the outdoor heat exchanger sensor (Th4) becomes –10ºC or
lower continuously for 10 minutes.
(b)
Operation content:
The command speed upper limit is set at 50 rps for 2 minutes.
(c)
Reset conditions:
When the temperature sensed by the outdoor heat exchanger sensor (Th4) becomes -7ºC or higher.
(17) Cooling low outdoor temperature protective control
◆
<
I
>
(a)
Operating conditions:
When the outdoor air temperature sensor (Th5) is 22ºC or lower continues for 30 seconds while
outdoor speed is other than 0rps.
(b)
Detail of operation:
After the outdoor fan operates at 2nd (Th5 > 10
°
C) or 1 st (Th5 =
<
10
°
C) speed for 60 seconds; the
corresponding outdoor heat exchanger temperature shall implement the following controls.
1
Outdoor heat exchanger temperature =
<
21ºC
After the outdoor fan speed drops (down) to one speed for 60 seconds; if the outdoor heat exchanger temperature is lower
than 21
°
C, gradually reduce the outdoor fan speed by 1 speed. (Lower limit speed is 1st speed)
2
21ºC < Outdoor heat exchanger temperature =
<
38ºC
After the outdoor fan speed maintains for 20 seconds; if the outdoor heat exchanger temperature is 21
°
C~ 38
°
C, maintain
outdoor fan speed.
3
Outdoor heat exchanger tempeature > 38ºC
After the outdoor fan speed rises (up) to 1 speed for 60 seconds; if the outdoor heat exchanger temperature is higher
than 38
°
C, gradually increase outdoor fan speed by 1 speed. (Upper limit speed is 3rd speed)
(c)
Reset conditions:
When the either of the following conditions is satisfied
1
When the outdoor air temperature sensor (Th5) is 25ºC or higher continues for 30 seconds while the outdoor fan operates
at 2nd or 3rd speed.
2
When the inverter command speed is 0rps.
