Blocking - DeDietrich C 340 Series Installation And User Manual

12 Troubleshooting
Code Display text
A.10.47 RoomTempZoneC miss Measure of Room Temperature
A.10.50 T_DHW top D miss
A.10.54 Temp. Zone DHW
miss.
A.10.56 T_DHW Zone AUX
miss
Tab.130 Blocking codes
Code Display text
H.00.36 T 2nd Return Open
H.00.37 T 2nd Return Closed
H.00.69 TbufferTankOpen
162 C 340 / C 640
Description
Zone C is missing
Domestic Hot Water temperature
sensor top zone DHW is missing
Temperature sensor Zone DHW is
missing
Domestic Hot Water temperature
sensor Zone AUX is missing
12.1.3

Blocking

Description
Second return temperature sensor is
either removed or measures a tem­
perature below range
Second return temperature sensor is
either shorted or measures a tem­
perature above range
Buffer Tank temperature sensor is
either removed or measures a tem­
perature below range
Solution
Room temperature sensor not detected in zone
C:
Room temperature sensor is not connected:
connect the sensor
Room temperature sensor is not connected
correctly: connect the sensor correctly
Faulty sensor: replace the sensor
Domestic hot water temperature sensor not de­
tected in zone DHW:
Domestic hot water temperature sensor is not
connected: connect the sensor
Domestic hot water temperature sensor is not
connected correctly: connect the sensor cor­
rectly
Faulty sensor: replace the sensor
Temperature sensor not detected in zone DHW:
Temperature sensor is not connected: connect
the sensor
Temperature sensor is not connected correctly:
connect the sensor correctly
Faulty sensor: replace the sensor
Domestic hot water temperature sensor not de­
tected in zone AUX:
Domestic hot water temperature sensor is not
connected: connect the sensor
Domestic hot water temperature sensor is not
connected correctly: connect the sensor cor­
rectly
Faulty sensor: replace the sensor
Solution
Second return temperature sensor open:
Bad connection: check the wiring and connec­
tors.
Incorrectly fitted sensor: check that the sensor
has been correctly fitted.
Faulty sensor: replace the sensor.
Second return temperature sensor short-circuit­
ed:
Bad connection: check the wiring and connec­
tors.
Incorrectly fitted sensor: check that the sensor
has been correctly fitted.
Faulty sensor: replace the sensor.
Buffer tank temperature sensor open:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Sensor is not present.
Faulty sensor: replace the sensor
7762666 - v.02 - 29092020