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13.1.3
Blocking codes
Tab.56
AURIGA M/T-A outdoor unit blocking codes
Code
Message
H00.16
DHW sensor Open
H00.17
DHW sensor Closed
H00.32
TOutdoor Open
H00.33
TOutdoor Closed
H00.34
TOutdoor Missing
H00.48
THp Flow Closed
7856310 - v02 - 21122023
A blocking code signals an anomaly affecting the heating system.
Several possibilities:
The system automatically attempts to correct the error (for example in
the event of a fault related to the flow rate).
The error is still present and the system functions in defect mode (for
example, in the event of a fault affecting the outdoor unit, then the
backup electric heater or the backup boiler is started up).
The system is shut down but automatically switches on again when the
error disappears.
Description
Domestic Hot Water tank temperature sensor is either removed or measures a
temperature below range
Check the wiring between the central unit PCB and the sensor.
Check that the sensor has been fitted properly.
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
Domestic Hot Water tank temperature sensor is either shorted or measures a
temperature above range
Check the wiring between the central unit PCB and the sensor.
Check that the sensor has been fitted properly.
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
Outdoor temperature sensor is either removed or measures a temperature below
range
Check the wiring between the central unit PCB and the sensor.
Check that the sensor has been fitted properly.
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
Outdoor temperature sensor is either shorted or measures a temperature above range
Check the wiring between the central unit PCB and the sensor.
Check that the sensor has been fitted properly.
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
Outdoor temperature sensor was expected but not detected
Wired sensor:
Check the wiring between the central unit PCB and the sensor.
Check that the sensor has been fitted properly.
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
Reset the values CN1 and CN2.
This solution also resets all the other parameters.
Radio-controlled outdoor temperature sensor:
Check the wiring between the radio receiver and the central unit PCB (R-Bus line).
Check that the radio gateway is supplied with power.
Perform a pairing sequence.
If necessary, perform a new pairing sequence and reduce the distance between the
outdoor radio sensor and the radio receiver.
Replace the sensor if necessary.
Replace the radio receiver if necessary.
Heat pump flow temperature sensor is either shorted or measures a temperature
above range
Check the wiring between the central unit PCB and the sensor.
Check that the sensor has been fitted properly.
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
13 Troubleshooting
73
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