The frequency judgment will perform every 30 seconds. Nevertheless, the frequency is instructed to outdoor compressor after
every 90 seconds except when either one of the below conditions is met:
(a) The frequency judged changes from frequency number decreasing zones (Zone No. 0 or 1 or 2 or 3) to frequency number
increasing zones (Zone No. 5 or 6 or 7 or 8) and vice verse.
(b) The frequency judged falls on frequency shifting zone number 0 or 1 (shift to Frequency MIN).
(c) The frequency judged falls on frequency shifting zone number 4 (no shifting in frequency number).
(d) The frequency judged falls on frequency shifting zone number 7 or 8 (shift to Frequency MAX).
The instructed frequency is the value referred by the frequency number, which resulted from previous instructed frequency
number with the numbers of frequency numbers to be shifted, in Table on Frequency Number.
Time (s) 0 30 60 90 120 150 180 210 240 270 300 330
Zone (+/-) + + + + + +/- + - - +/- +
Freq. zone based on temp. diff. 8 7 7 6 6 6 4 5 3 1 4 5
Frequency shift Max Max +2 +2 +2 0 +1 -1 Min 0 +1
Freq. no. judged based on
previous
15 30 30 17 17 17 15 16 14 5 4 6
Freq. instruction (Y/N) & its
condition
Y (a) Y (a) Y (b) N N Y (c) Y (d) N Y (e) Y (f) Y (d) N
Freq. control condition (g) (g) (h) (h) (i)
Instructed freq. 8 8 15 15 15 14 5 5 5
Operation freq. 8 8 15 15 15 15 15 15 14 5 5 5
Note:
(a) Starting frequency.
(b) Frequency judged falls on Zone 7 or 8 (shift to Frequency MAX).
(c) 90 seconds frequency instruction limit.
(d) Frequency judged falls on Zone 4 (no shifting).
(e) Frequency no. changes from no. increasing zones to no. decreasing zones.
(f) Frequency judged falls on Zone 0 or 1 (shift to Frequency MIN).
(g) Normal initial operation starts (60 s).
(h) Maximum frequency for normal cooling operation
(i) Minimum frequency for normal cooling operation.
20
CS-E9BKP CU-E9BKP5 / CS-E12BKP CU-E12BKP5
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