Service Manual - KXL DCI
12-5
12.1.9
EEV (Electronic Expansion Vavle) Control
12.1.9.1 EEV Control for DCI 24/30
The target EEV value is the sum of open loop value (OL) and a result of the accumulative
correction values (CV).
∑
+
=
CV
OL
EEV
EEV
EEV
The EEV intial value(OL) is defined as follow:
EEV
OL
=
EEVBaseOp EEVOpenLoopCpc EEVTubeCompnst
EEVBaseOpenLoop
Basic EEV open loop
EEVOpenLoopCpctyCrct
Open Loop correction
EEVTubeCompnst
EEV tube Length
compensation
Mode
GC 24/30 DCI
GC 24/30 DCI
GC 24/30 DCI
COOL
220
25
0
HEAT
210
30
0
EEV
CV
is a correction value for the EEV opening that is based on the compressor temperature,
During the first 6 minutes after SB the correction is not calculated. After that the correction value is
updated every
30
seconds.
z
When the unit is in Cool mode, the correction is defined as follow:
D
erCTT
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
≥
57
0
0
1
3
4
5
5
6 6 7
8
9
10
12
13
54, 56
0
0
0 2 3 4
4
5
5
6 6 8 9
11
12
51, 53
0
0
0 1 2 3
3
4
4
5 5 7 8
10
11
48, 50
0
0
0 0 1 2
2
3
3
4 5 6 7
9
10
45, 47
0
0
0 0 0 1
1
2
2
3 4 5 6
8
10
42,
44 -1 -1 0 0 0 0 1 2 2 2 3 4 6 7 9
39, 41
-1
-1
-1 0 0 0
1
2
2
2 2 4 5
7
8
36, 38
-2
-2
-1 -1 0 0
0
2
2
2 2 3 5
6
8
33, 35
-2
-2
-1 -1 0 0
0
2
2
2 2 3 4
6
8
30, 32
-2
-2
-2 -1 -1 0
0
2
2
2 2 3 4
6
7
20, 29
-3 -3 -2 -1 -1 0 0 0 2 2 2 2 4 5 7
17, 19
-4
-3
-3 -2 -2 -1
-1
-1
0
2 2 2 3
5
7
14, 16
-4
-4
-3 -2 -2 -1
-1
-1
0
1 2 2 2
4
6
11, 13
-5
-4
-3 -3 -2 -1
-1
-1
0
0 1 2 2
3
5
8, 10
-5
-5
-4 -3 -3 -2
-2
-2
0
0 0 1 2
2
3
5,
7 -6 -5 -4 -4 -3 -2 -2 -2 -1 0 0 0 1 2 2
2, 4
-6
-6
-5 -4 -4 -3
-2
-2
-1
-1 0 0 0
1
2
-1, 1
-7
-6
-6 -5 -4 -3
-3
-3
-1
-1 -1 0 0
0
1
CTT - OMT
≤
-2
-8
-7
-6 -6 -5 -4
-4 -3 -2
-2 -2 0 0
0
0
