Elektronika SCM60ZD-S Manual page 35

(13) Control and protection functions
(a) Frost prevention for indoor heat exchanger (During cooling or dehumidifying)
(i) Operating conditions
1) Indoor heat exchanger temperature (detected with Th
2) 10 minutes elapsed after the start of operation.
(ii) Detail of anti-frost operation
• SKM model
decision rps
minimum rps
0 rps
Indoor heat exchanger temp. (°C)
(iii)Reset conditions: Indoor heat exchanger temperature (Th
Note (1)
Values in ( ) are for type STM, SRRM.
(b) High pressure control
(i) Purpose: Prevents abnormally high pressure operation during heating.
(ii) Detector: Indoor unit heat exchanger sensor (Th
(iii) Detail of operation:
(Example) Fuzzy
Notes (1) When the indoor unit heat exchanger temperature is in the range of B~C ºC, the indoor command speed is reduced by 8 rps at each 20 seconds.
When the temperature is C ºC or over for 1 minute continuously, the compressor is stopped.
(2) When the indoor unit heat exchanger temperature is in the range of A~B ºC, if the indoor command speed is been maintained and the operation has
continued for more than 20 seconds at the same speed, it returns to the normal heating operation.
(3) Indoor blower retains the fan tap when it enters in the high pressure control. Outdoor blower is operated in accordance with the speed.
(4) 22~35 type: 20 rps. 50~60 type: 35 rps
¡ Temperature list
-A < = 24
Th
I
-A < = 27
24 < Th
I
27 < Th -A
I
2.5 5 8
-R
I
After lapse of 20 Sec. or over
After lapse of 20 Sec. or over
After lapse of 20 Sec. or over
A
Indoor unit heat exchanger temperature (˚C)
A B
48.5 56
47.5 53
46.5 50
-R ) is lower than 5ºC.
I 1
• STM, SRRM models
decision rps
decision+min
( )
rps
2
minimum rps
0 rps
2
Indoor heat exchanger temp. (°C)
-R ) is higher than 8ºC (7ºC).
I 1
)
1
8 rps
(2)
(2)
Lower limit (4)
(2)
B C
Unit : ºC
C
62
61
60
3 5 7
(1)
8 rps
0 rps
35