0020334316_02 Operating and installation instructions
55
Symptom
Possible cause
Measure
Heat generator continues to
heat once the room temperature
has been reached
Incorrect value in the
Room
temp. mod.:
or
Zone assign-
ment:
function
1.
In the
Room temp. mod.:
function, set the value
Active
or
Expanded
.
2.
In the zone in which the system control is installed, assign
the system control's address in the
Zone assignment:
func-
tion.
The heating installation remains
in domestic hot water mode
Heat generator cannot reach
the max. target flow temperat-
ure
▶
Reduce the set value in the
Max. target flow temperature:°C
function.
Only one of several heating
circuits is displayed
Heating circuits inactive
▶
In the
Circuit type:
function, define the required function for
the heating circuit.
It is not possible to switch to the
installer level
You do not know the code for
the installer level
▶
Reset the system control to the factory setting. All set values
will be lost.
B.2
Troubleshooting
Code/meaning
Possible cause
Measure
Ventilation unit communica-
tion interrupted
F.509
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
HP control module commu-
nication interrupted
F.511
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
Heat generator 1 communica-
tion interrupted
(can be heat
generator 1 to 8)
F.1191…F.1195,
F.1200…F.1211,
F.1252…F.1255
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
FM3 address 1 communica-
tion interrupted
(can be ad-
dress 1 to 3)
F.1212…F.1214
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
FM5 communication interrup-
ted
F.1218
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
Remote control 1 communic-
ation interrupted
(can be ad-
dress 1 to 3)
F.1219…F.1222
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
Domestic hot water station
communication interrupted
F.1227
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
Solar pump station commu-
nication interrupted
F.1228, F.1229
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
Internet module communica-
tion interrupted
F.900
The cable is defective
▶
Replace the cable.
Incorrect plug connection
▶
Check the plug connection.
Outdoor temperature sensor
signal invalid
F.521
Outdoor temperature sensor
defective
▶
Replace the outdoor temperature sensor.
FM3 configuration [1] not cor-
rect
(can be address 1 to 3)
F.1231…F.1233
Incorrect set value for the FM3
▶
Set the correct set value for the FM3.
Mixer module not supported
F.1237
Unsuitable module connected
▶
Install a module that the control supports.
Solar module not supported
F.1238
Unsuitable module connected
▶
Install a module that the control supports.
Remote control not supported
F.1239
Unsuitable module connected
▶
Install a module that the control supports.
Basic system diagram code
not correct
F.1240
Incorrectly selected basic sys-
tem diagram code
▶
Set the correct basic system diagram code.
Summary of Contents for sensoCOMFORT VRC 720/3
Page 2: ...2 en Operating and installation instructions 3 en Country specifics 59...
Page 38: ...38 Operating and installation instructions 0020334316_02 4 9 2 3 Wiring diagram 0020184677...
Page 44: ...44 Operating and installation instructions 0020334316_02 4 9 4 5 Wiring diagram 0020177912...
Page 47: ...0020334316_02 Operating and installation instructions 47 4 9 5 5 Wiring diagram 0020280010...
Page 50: ...50 Operating and installation instructions 0020334316_02 4 9 6 5 Wiring diagram 0020260774...
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