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RAK75 / © Ensto 2018
11. Accessories
ECOA907
Humidity sensor
ECOA908
Combined humidity and temperature sensor
ECOA909
Low temperature sensor
ECOA911
Enclosure
12. Troubleshooting
Message
Cause
DISRUPTION ON SENSOR A
The sensor installed to terminals 5 and 6 is not correctly connected or is
damaged.
DISRUPTION ON SENSOR B
The sensor installed to terminals 7 and 8 is not correctly connected or is
damaged.
SHORT CIRCUIT ON SENSOR A
The sensor installed to terminals 5 and 6 is not correctly connected or is
damaged.
SHORT CIRCUIT ON SENSOR B
The sensor installed to terminals 7 and 8 is not correctly connected or is
damaged.
DATE/TIME
[setting blinks]
If the thermostat has been without electrical supply for 50 hours, the re-
serve supply has run out. The processor that runs the clock has stopped
and the date and time must be reinstalled. All other settings are still
saved in the memory.
Set the date and time.
SET: LANGUAGE – DATE/
TIME– OPERATION MODE –
SENSOR
If you have forgotten to make a setting in the start up menu, you must go
back to the start up menu and complete the commissioning before you
exit the start up menu.
OVER TEMP ALARM
[display blinks]
The current value has exceeded the set alarm temperature. The thermo-
stat switches off the load, but otherwise works as usual until the current
value falls below the set temperature or the alarm temperature is set
above the current value.
UNDER TEMP ALARM
[
display blinks
]
The current value has fallen below the set alarm temperature. The
thermostat switches off the load, but otherwise works as usual until the
current value rises above the set temperature or the alarm temperature
is set below the current value.
OVER HEATING PROTECTION
ACTIVE
The current value in the floor has exceeded the set temperature for the
overheating protection. The thermostat switches off the load, but other
-
wise works as usual until the current value falls below the set tempera-
ture or the alarm temperature is set above the current value.
