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Code
Display text
Description
Solution
H.10.30
T Zone DHW closed
Domestic Hot Water temperature
sensor Zone DHW closed
Domestic hot water temperature sensor zone
DHW short-circuited:
Bad connection: check the wiring and connec
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Faulty sensor: replace the sensor
When using thermostat instead of sensor: pa
rameter CP502 must be set to off (=disable)
H.10.36
Sensor Zone AUX open Flow temperature sensor Zone AUX
open
Flow temperature sensor zone AUX 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
H.10.37
Sens. ZoneAUX closed Flow temperature sensor ZoneAUX
closed
Flow temperature sensor zone AUX 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
H.10.38
T Dhw Zone AUX open Domestic Hot Water temperature
sensor Zone AUX open
Domestic hot water temperature sensor zone
AUX 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
H.10.39
Sens. ZoneAUX Closed Domestic Hot Water temperature
sensor Zone AUX closed
Domestic hot water temperature sensor zone
AUX short-circuited:
Bad connection: check the wiring and connec
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Faulty sensor: replace the sensor
When using thermostat instead of sensor: pa
rameter CP504 must be set to off (=disable)
12.1.4 Locking
Tab.131 Locking codes
Code
Display text
Description
Solution
E.00.00
TFlow Open
Flow temperature sensor is either
removed or measures a temperature
below range
Flow 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.
E.00.01
TFlow Closed
Flow temperature sensor is either
shorted or measures a temperature
above range
Flow temperature sensor short circuited:
Bad connection: check the wiring and connec
tors.
Incorrectly fitted sensor: check that the sensor
has been correctly fitted.
Faulty sensor: replace the sensor.
12 Troubleshooting
170
C 340 / C 640
7762666 - v.02 - 29092020