4P642495-1A
–
2022.02
Page
33
of
52
Holding register
VRV
Sky
-air
H
RV
Sp
lit
VRV h
yd
ro
b
o
x
LT
&
H
T
Air cu
rta
in
s
ERQ
con
tro
l b
o
x
H
eat
in
g
Ap
p
lie
d
On/Off
On/Off of indoor units
* For VRV hydrobox LT & HT &
Heating:
On/off “space cooling/heating”
O
O
O
O
O*
O
O
O*
O
Fan speed (Air
flow rate)
LL, L, M, H, HH (depending on indoor
unit capability)
* Air curtain:
CYV models: not available CYQ models:
available
HRV (ventilation rate):
VAM models: available
VKM models: not available
O
O
O*
-
-
O*
-
-
-
Fan direction
Swing, Flap direction (depending on
indoor unit capability)
O
O
-
-
-
-
-
-
-
42001 (1-00)
42004 (1-01)
.. (step of 3)
42190 (4-15)
Bit
Description
Meaning
15
-
14
Fan speed
0 till 7
This value is depending on “fan speed steps capability”
value
Value
0
1
2
3
4
5
6
7
Fix
-
-
-
-
-
H
-
-
2step
Auto
L
-
-
-
H
-
-
3step
Auto
L
-
M
-
H
-
-
5step
Auto
LL
L
M
H
HH
-
-
(note: Fan control flag bit 7-6-5-4 must be set to value 6)
Note: The BMS needs to copy input register value:
32001 (1-
00)… bit 14
-13-12 to this holding register.
(note: in case no fan capability this register should be
set to 0)
HRV (ventilation rate) : For VAM units:
Values 0/1/2:L & 3/4/5/6/7:H
(note for HRV: fan speed steps capability is fixed to 0)
(note for HRV: Fan control flag bits 7-6-5-4 are not
applicable)
(note for HRV: Related input register with actual value:
32001 (1-
00)… bit 14
-13-12
Attention during the BMS copy: value 3
“
L
”
of input
register should be translated to value 2
“
L
”
in holding
register by the BMS to avoid a change to
“
H
”
ventilation
rate.
Value 7 “
H
”
of input register can be copied to equal
value7 “
H
”
in holding register.)
13
12
11
-
10
Fan direction
0 till 7
This value has only meaning if “Fan direction capability”
exist
0: P0, 1: P1, 2:P2, 3: P3, 4: P4, 5: -, 6: Stop, 7: swing
P0 = horizontal direction
P4 = vertical direction
(note: Fan control flag must be set to value 6)
9
8
