OPERATION VIA MODBUS HEAT RECOVERY UNIT
en-58
en
221 Current mode operation
4.2 All register addresses
An extensive list of register addresses for using ModBus is
available at: www.biddle.info.
VALUE OPTION
general
01 unit off
05 test function
ventilation
20 ventilation, auto - speed 0
11 ventilation, auto - speed 1
12 ventilation, auto - speed 2
13 ventilation, auto - speed 3
14 ventilation, auto - boost
15 ventilation, manual - speed 0
16 ventilation, manual - speed 1
17 ventilation, manual - speed 2
18 ventilation, manual - speed 3
19 ventilation, manual - boost
recirculation
20 recirculation, auto - speed 0
21 recirculation, auto - speed 1
22 recirculation, auto - speed 2
23 recirculation, auto - speed 3
25 recirculation, manual - speed 0
26 recirculation, manual - speed 1
27 recirculation, manual - speed 2
28 recirculation, manual - speed 3
special operation
31 night cooling
41 fire mode (external signal)
42 smoke extraction
51 defrosting
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