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Code
Display text
Description
Solution
H.10.09
T Flow Zone B Open
Flow temperature sensor Zone B
Open
Flow temperature sensor zone B 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.10.10
T Flow Zone B Closed
Flow temperature sensor Zone B
Closed
Flow temperature sensor zone B 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
H.10.11
T Dhw Zone B Open
Domestic Hot Water Temperature
Sensor Zone B Open
Domestic hot water temperature sensor zone B
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.10.12
T Dhw Zone B Closed
Domestic Hot Water temperature
sensor Zone B Closed
Domestic hot water temperature sensor zone B
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 CP501 must be set to off (=disable)
H.10.13
TSwimmPoolZoneB
Open
Swimming Pool Temperature Sen
sor Zone B Open
Swimming pool temperature sensor B 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.10.14
TSwimmPoolZoneB
Close
Swimming Pool Temperature Sen
sor Zone B Closed
Swimming pool temperature sensor zone B 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
H.10.18
T Flow Zone C Open
Flow temperature sensor Zone C
Open
Flow temperature sensor zone C 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.10.19
T Flow Zone C Closed
Flow temperature sensor Zone C
Closed
Flow temperature sensor zone C 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
168
C 340 / C 640
7762666 - v.02 - 29092020