Temperature Control (WHO 4)
Original Document
Introduction
This document describes the Open Web Net Message for WHO = 4 - Temperature Control. It contains WHAT/DIMENSION/WHERE tables, and allowed OPEN messages for command and event sessions, status requests, dimension writing and requests.
WHO 4 - Heating Adjustment
WHAT Table
| Value |
Description |
| 0 |
Conditioning Mode |
| 1 |
Heating Mode |
| 102 |
Anti Freeze |
| 202 |
Thermal Protection |
| 302 |
Protection (generic) |
| 103 |
OFF – Heating Mode |
| 203 |
OFF – Conditioning Mode |
| 303 |
OFF (Generic) |
| 110 |
Manual-adjustment Mode – Heating |
| 210 |
Manual-adjustment Mode – Conditioning |
| 310 |
Manual-adjustment Mode (Generic) |
| 111 |
Programming Mode – Heating |
| 211 |
Programming Mode - Conditioning |
| 311 |
Programming Mode (generic) |
| 115 |
Holiday daily plan – Heating Mode |
| 215 |
Holiday daily plan – Conditioning Mode |
| 315 |
Holiday daily plan |
| 13xxx |
Vacation scenario for xxx days – Heating mode (xxx=0…999) |
| 23xxx |
Vacation scenario for xxx days – Conditioning mode (xxx=0….999) |
| 33xxx |
Vacation scenario for xxx days (xxx=0….999) |
| 3000 |
Vacation scenario disabled |
| 11xx |
Heating program x (x=1…3) |
| 21xx |
Conditioning program x (x=1…3) |
| 31xx |
Last activated program |
| 3100 |
Last activated program |
| 12xx |
Scenario xx (xx=1…16) |
| 22xx |
Scenario xx (xx=1...16) |
| 32xx |
Last activated scenario |
| 3200 |
Last activated scenario |
| 20 |
Remote control disabled |
| 21 |
Remote control enabled |
| 22 |
At least one probe OFF |
| 23 |
At least one probe in Anti Freeze |
| 24 |
At least one probe in Manual |
| 30 |
Failure discovered |
| 31 |
Central Unit battery KO |
| 40 |
Release of sensor local adjustment |
WHERE Table
| Value |
Description |
| 0 |
General probes (all probes) |
| 1 |
Zone 1 master probe |
| 2 |
Zone 2 master probe |
| … |
… |
| 10 |
Zone 10 master probe |
| … |
… |
| 99 |
Zone 99 master probe |
| 001 |
All probes (master and slave) belonging to Zone 1 |
| 002 |
All probes (master and slave) belonging to Zone 2 |
| … |
… |
| 010 |
All probes (master and slave) belonging to Zone 10 |
| … |
… |
| 099 |
All probes (master and slave) belonging to Zone 99 |
| 101 |
Probe 1 of Zone 1 |
| 201 |
Probe 2 of Zone 1 |
| … |
… |
| 801 |
Probe 8 of Zone 1 |
| 102 |
Probe 1 of Zone 2 |
| 202 |
Probe 2 of Zone 2 |
| … |
… |
| 802 |
Probe 8 of Zone 2 |
| … |
… |
| 199 |
Probe 1 of Zone 99 |
| 299 |
Probe 2 of Zone 99 |
| … |
… |
| 899 |
Probe 8 of Zone 99 |
| #0 |
Central Unit |
| #1 |
Zone 1 via Central Unit |
| #2 |
Zone 2 via Central Unit |
| … |
… |
| #10 |
Zone 10 via Central Unit |
| … |
… |
| #99 |
Zone 99 via Central Unit |
DIMENSION Table
| Value |
Description |
Access |
| 0 |
Measures Temperature |
R |
| 11 |
Fan coil Speed |
R |
| 12 |
Complete probe status |
R |
| 13 |
Local set offset |
R |
| 14 |
Set Point temperature |
R/W |
| 19 |
Valves status |
R |
| 20 |
Actuator Status |
R |
| 22 |
Split Control |
R/W |
| 30 |
End date Holiday Scenario |
R/W |
Zone Setup Commands
Manual Setting of Zone to Temperature
Set zone to a specific temperature in manual mode.
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*#<zone>*#14*<temp>*<mode>## |
Set zone to temperature |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*#4*<zone>*0*<temp>## |
Temperature reading |
| Event |
Server → Client |
*4*<what>*#<zone>## |
Operation mode |
Where:
<zone> = [1-99] Zone number<temp> = Temperature in format CCCC (e.g., "0215" for 21.5°C)<mode> = 1 (heating), 2 (conditioning), 3 (generic)
Set Zone in Automatic Mode
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*311*#<zone>## |
Set zone to automatic |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*<what>*#<zone>## |
Operation mode |
Set Zone in OFF Mode
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*303*#<zone>## |
Turn off zone |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*303*<zone>## |
|
Set Zone in Anti-freeze Mode
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*102*#<zone>## |
Set anti-freeze mode |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*102*<zone>## |
|
Set Zone in Thermal Protection Mode
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*202*#<zone>## |
Set thermal protection |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*202*<zone>## |
|
Zone Local Release Probe
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*40*<zone>## |
Release local adjustment |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*<what>*<zone>## |
New mode |
Status Request Commands
Zone Temperature Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*<zone>*0## |
Request temperature |
| Command |
Server → Client |
*#4*<zone>*0*<temp>## |
Temperature value |
| Command |
Server → Client |
ACK |
|
Fan Coil Speed Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*<zone>*11## |
Request fan speed |
| Command |
Server → Client |
*#4*<zone>*11*<speed>## |
Speed value |
| Command |
Server → Client |
ACK |
|
Speed values:
- 0 = Auto
- 1 = Speed 1
- 2 = Speed 2
- 3 = Speed 3
- 15 = OFF
Zone Complete Status Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*<zone>## |
Request all zone info |
| Command |
Server → Client |
*#4*<zone>*0*<temp>## |
Temperature |
| Command |
Server → Client |
*#4*<zone>*12*<temp>*3## |
Adjusted temperature |
| Command |
Server → Client |
*4*<what>*<zone>## |
Operation mode |
| Command |
Server → Client |
*#4*<zone>*13*<offset>## |
Local offset |
| Command |
Server → Client |
*#4*<zone>*14*<setpoint>*3## |
Set point |
| Command |
Server → Client |
ACK |
|
Zone Set Point Temperature Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*<zone>*14## |
Request set point |
| Command |
Server → Client |
*#4*<zone>*14*<temp>*3## |
Set point temperature |
| Command |
Server → Client |
ACK |
|
Zone Valves Status Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*<zone>*19## |
Request valve status |
| Command |
Server → Client |
*#4*<zone>*19*<CV>*<HV>## |
Valve status |
| Command |
Server → Client |
ACK |
|
Valve status values:
- 0 = OFF
- 1 = ON
- 2 = Opened
- 3 = Closed
- 4 = Stop
- 5 = OFF Fan Coil
- 6 = ON speed 1
- 7 = ON speed 2
- 8 = ON speed 3
Central Unit Commands
Manual Setting of Central Unit
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*#0*#14*<temp>*<mode>## |
Set central unit temperature |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*<what>*#0## |
Operation mode |
Set Central Unit OFF
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*303*#0## |
Turn off central unit |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*303*#0## |
|
Weekly Program Activation
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*<program>*#0## |
Activate weekly program |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*<program>*#0## |
|
Program values:
- 1101-1103 = Heating programs 1-3
- 2101-2103 = Conditioning programs 1-3
- 3101-3103 = Generic programs 1-3
Scenario Activation
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*<scenario>*#0## |
Activate scenario |
| Command |
Server → Client |
ACK/NACK |
|
| Event |
Server → Client |
*4*<scenario>*#0## |
|
Scenario values:
- 1201-1216 = Heating scenarios 1-16
- 2201-2216 = Conditioning scenarios 1-16
- 3201-3216 = Generic scenarios 1-16
Holiday Mode Commands
Holiday Mode with Weekly Program Return
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*115#<program>*#0## |
Heating holiday mode |
| Command |
Client → Server |
*4*215#<program>*#0## |
Conditioning holiday mode |
| Command |
Client → Server |
*4*315#<program>*#0## |
Generic holiday mode |
| Command |
Server → Client |
ACK/NACK |
|
N Days Holiday Mode
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*<days>#<program>*#0## |
N days holiday |
| Command |
Server → Client |
ACK/NACK |
|
Where:
<days> = 13001-13255 (heating), 23001-23255 (conditioning), 33001-33255 (generic)<program> = 3101-3103
Holiday Mode Deactivation
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*4*3000*#0## |
Deactivate holiday mode |
| Command |
Client → Server |
*4*3000#<program>*#0## |
Deactivate with specific program |
| Command |
Server → Client |
ACK/NACK |
|
Set Holiday Deadline
Set Holiday Date
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*#0*#30*<day>*<month>*<year>## |
Set holiday end date |
| Command |
Server → Client |
ACK/NACK |
|
Set Holiday Time
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*#0*#31*<hour>*<minutes>## |
Set holiday end time |
| Command |
Server → Client |
ACK/NACK |
|
Central Unit Status Requests
Zone Operation Mode Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*#<zone>## |
Request zone mode via central unit |
| Command |
Server → Client |
*4*<what>*#<zone>## |
Zone operation mode |
| Command |
Server → Client |
ACK |
|
Central Unit Operation Mode Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*#0## |
Request central unit mode |
| Command |
Server → Client |
*4*<what>*#0## |
Central unit mode |
| Command |
Server → Client |
ACK |
|
Holiday Deadline Requests
Holiday Date Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*#0*30## |
Request holiday end date |
| Command |
Server → Client |
*#4*#0*30*<day>*<month>*<year>## |
Holiday end date |
| Command |
Server → Client |
ACK |
|
Holiday Time Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*#0*31## |
Request holiday end time |
| Command |
Server → Client |
*#4*#0*31*<hour>*<minutes>## |
Holiday end time |
| Command |
Server → Client |
ACK |
|
Split Control Commands
Split Control Request (Dimension 22)
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*3#<zone>#<actuator>*22## |
Request split status |
| Command |
Server → Client |
*#4*3#<zone>#<actuator>*22*<mode>*<sp>*<vel>*<swing>## |
Split status |
| Command |
Server → Client |
ACK |
|
Split Control Set (Dimension 22)
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#4*3#<zone>#<actuator>*#22*<mode>*<sp>*<vel>*<swing>## |
Set split parameters |
| Command |
Server → Client |
ACK/NACK |
|
Split parameters:
<mode>: 0=Off, 1=Winter, 2=Summer, 3=Fan, 4=Dehumidification, 5=Auto<sp>: Set point temperature (000-1270 representing 0.0°C to 127.0°C in 0.5°C steps)<vel>: 0=Auto, 1=Min, 2=Medium, 3=Max, 4=Silent<swing>: 0=Off, 1=On
Event Session Messages
Zone Temperature Change
| Session Type |
Direction |
Open Frame |
Note |
| Event |
Server → Client |
*#4*<zone>*0*<temp>## |
Temperature reading |
Zone Operation Mode Change
| Session Type |
Direction |
Open Frame |
Note |
| Event |
Server → Client |
*4*<what>*<zone>## |
Zone mode change |
Central Unit Mode Change
| Session Type |
Direction |
Open Frame |
Note |
| Event |
Server → Client |
*4*<what>*#0## |
Central unit mode change |
Split Status Change
| Session Type |
Direction |
Open Frame |
Note |
| Event |
Server → Client |
*#4*3#<zone>#<actuator>*22*<mode>*<sp>*<vel>*<swing>## |
Split status change |
WHO 1004 - Temperature Control Diagnostics
WHERE Table (Diagnostics)
| Value |
Description |
| 1-99 |
Zone 1-99 master probe |
| #0 |
Central unit |
| #1-99 |
Zone 1-99 via central unit |
DIMENSION Table (Diagnostics)
| Value |
Description |
Access |
| 7 |
Central Unit Diagnostic |
R |
| 11 |
Central Unit Auto diagnostic |
R |
| 20 |
Probe diagnostic (only zones with failures) |
R |
| 21 |
Probe diagnostic (all zones) |
R |
| 22 |
Auto diagnostic of failures |
R |
| 23 |
Number of zone with failures |
R |
Diagnostic Commands
Central Unit Diagnostic Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#1004*#0*7## |
Request central unit diagnostic |
| Command |
Server → Client |
*#1004*#0*7*<bits>## |
Diagnostic bits |
| Command |
Server → Client |
ACK |
|
Zone Diagnostic Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#1004*#<zone>*21## |
Request zone diagnostic |
| Command |
Server → Client |
*#1004*#<zone>*21*<bits>## |
Diagnostic bits |
| Command |
Server → Client |
ACK |
|
Failure Count Request
| Session Type |
Direction |
Open Frame |
Note |
| Command |
Client → Server |
*#1004*#0*23## |
Request failure count |
| Command |
Server → Client |
*#1004*#0*23*<no_answer>*<failures>## |
Failure counts |
| Command |
Server → Client |
ACK |
|
Diagnostic Event Messages
Central Unit Diagnostic
| Session Type |
Direction |
Open Frame |
Note |
| Event |
Server → Client |
*#1004*#0*7*<bits>## |
Central unit diagnostic |
| Event |
Server → Client |
*#1004*#0*11*<bits>## |
Central unit auto-diagnostic |
Zone Diagnostic
| Session Type |
Direction |
Open Frame |
Note |
| Event |
Server → Client |
*#1004*#<zone>*21*<bits>## |
Zone diagnostic |
| Event |
Server → Client |
*#1004*#<zone>*22*<bits>## |
Zone auto-diagnostic |
Failure Count
| Session Type |
Direction |
Open Frame |
Note |
| Event |
Server → Client |
*#1004*#0*23*<no_answer>*<failures>## |
Failure count change |
Temperature values are represented as 4-digit strings:
- Format:
c1c2c3c4
c1 = Always 0 (positive temperature indicator)c2c3 = Temperature integer part (05-40 for set points, 00-50 for measurements)c4 = Decimal part (0.1°C step for measurements, 0.5°C step for set points)
Examples:
0215 = 21.5°C0200 = 20.0°C0055 = 5.5°C
Local Offset Values
Local offset represents the knob position on thermostats:
| Value |
Description |
| 00 |
Knob on 0 |
| 01 |
Knob on +1°C |
| 11 |
Knob on -1°C |
| 02 |
Knob on +2°C |
| 12 |
Knob on -2°C |
| 03 |
Knob on +3°C |
| 13 |
Knob on -3°C |
| 4 |
Local OFF |
| 5 |
Local protection |
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