Troubleshooting - Vaillant sensoCOMFORT VRC 720 Manual De Uso E Instalación

Appendix
Symptom
Heat generator continues to
heat once the room temperature
has been reached
The heating installation remains
in domestic hot water mode
Only one of several heating
circuits is displayed
It is not possible to switch to the
installer level
B.2

Troubleshooting

Message
Ventilation unit communication
interrupted
HP control module communica-
tion interrupted
Outdoor temperature sensor
signal invalid
Heat generator 1 communica-
tion interrupted *,
* Can be heat generator 1 to 8
FM3 address 1 communication
interrupted *,
* Can be address 1 to 3
FM5 communication interrupted
Remote control 1 communica-
tion interrupted *,
* Can be address 1 to 3
Domestic hot water station com-
munication interrupted
Solar pump station communica-
tion interrupted
FM3 configuration [1] not cor-
rect *,
* Can be address 1 to 3
Mixer module no longer suppor-
ted
Solar module no longer suppor-
ted
Remote control no longer sup-
ported
Basic system diagram code not
correct
Remote control 1 missing *,
* Can be remote control 1 or 2
Current basic system diagram
does not support FM5
FM3 missing
DHW temperature sensor S1
missing at FM3
Solar pump 1 reports faults *, *
Solar pump 1 or 2
46
Possible cause
Incorrect value in the Room
temp. mod.: or Zone assign-
ment: function
Heat generator cannot reach
the max. target flow temperat-
ure
Heating circuits inactive
You do not know the code for
the installer level
Possible cause
Incorrect plug connection
The cable is defective
Incorrect plug connection
The cable is defective
Outdoor temperature sensor
defective
The cable is defective
Incorrect plug connection
The cable is defective
Incorrect plug connection
The cable is defective
Incorrect plug connection
The cable is defective
Incorrect plug connection
The cable is defective
Incorrect plug connection
The cable is defective
Incorrect plug connection
Incorrect set value for the FM3
Unsuitable module connected
Unsuitable module connected
Unsuitable module connected
Incorrectly selected basic sys-
tem diagram code
Missing remote control
FM5 connected in the heating
installation
Incorrectly selected basic sys-
tem diagram code
Missing FM3
Domestic hot water temperature
sensor S1 not connected
Fault in the solar pump
Operating and installation instructions sensoCOMFORT 0020287900_00
Measure
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.
▶
Reduce the set value in the Max. target flow temperature:°C
function.
▶
In the Circuit type: function, define the required function for
the heating circuit.
▶
Reset the system control to the factory setting. All set values
will be lost.
Measure
▶
Check the plug connection.
▶
Replace the cable.
▶
Check the plug connection.
▶
Replace the cable.
▶
Replace the outdoor temperature sensor.
▶
Replace the cable.
▶
Check the plug connection.
▶
Replace the cable.
▶
Check the plug connection.
▶
Replace the cable.
▶
Check the plug connection.
▶
Replace the cable.
▶
Check the plug connection.
▶
Replace the cable.
▶
Check the plug connection.
▶
Replace the cable.
▶
Check the plug connection.
▶
Set the correct set value for the FM3.
▶
Install a module that the control supports.
▶
Install a module that the control supports.
▶
Install a module that the control supports.
▶
Set the correct basic system diagram code.
▶
Connect the remote control.
▶
Remove the FM5 from the heating installation.
▶
Set the correct basic system diagram code.
▶
Connect the FM3.
▶
Connect the domestic hot water temperature sensor to the
FM3.
▶
Check the solar pump.