B.2 Troubleshooting - Vaillant sensoCOMFORT VRC 720f Manual De Uso

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
Shift-load cylinder no longer
supported
HP control module MO2 config-
uration not correct
FM5 configuration not correct
Cascade not supported
FM3 configuration [1] MO not
correct *, * Can be address 1 to
3
0020288151_00 sensoCOMFORT Operating and installation instructions
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 batteries in the radio
remote control are flat
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
Unsuitable cylinder connected
Incorrectly connected FM3
Incorrectly connected FM5
Incorrect set value for the FM5
Incorrectly selected system dia-
gram
Incorrect component selection
for the MO
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 all of the batteries (→ Operating and installation in-
structions for the radio remote control).
▶
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.
▶
Remove the cylinder from the heating installation.
1. Remove the FM3.
2. Select a suitable configuration.
1. Remove the FM5.
2. Select another configuration.
▶
Set the correct set value for the FM5.
▶
Set the correct system diagram that contains cascades.
▶
Select the component in the FM3 MO function that is appropri-
ate for the connected component on the FM3's multi-function
output.
Appendix
109