EN
EN - 11 N 12.54 D
IRREGULARITY SOLUTION
USER TERMINAL
Terminal switched off in comfort mode
- No 230V supply (check fuse, fused isolator, controller connection)
- Check the electrical connection between the terminal and the controller:
Reversal of "5V and
┴
" wires (refer to the wiring diagram)
The terminal remains 100% on (all segments lit)
Check the electrical connection between the terminal and the controller:
Reversal of wires on terminals A and B.
The terminal is on but remains locked without Alarm and keys inactive.
. Wiring error in a Master/Slave unit: Reversal of wires on terminals A and B with
the first slave
in the loop.
. The terminal is wired to a slave unit
. The keypad is locked using a combination of keys.
Display
- Check the condensate pump, the condition of the condensate pan, alarm contact
on D1 or D2.
- See value of d07
Frost protection display
Window open or "Frost protection" command via V300 zone timer
The terminal is on but no keys are operational
Keypad locked: press the and keys simultaneously for
5 seconds to lock or unlock the keypad.
COMFORT UNITS
The valves close instead of opening and vice-versa
- If the controller has just been powered on, wait for the system to initiate (6 mins).
- Check the electrical connection of the valves (refer to wiring diagram).
No heating
- Check that:
. The heating setpoint T°C is greater than the measured and displayed temperature
. Any shunt in case of a 2-tube (hot water coil only) is present between terminals S2
and
┴
(refer to wiring diagram)
. Any room changeover sensor, in case of a reversible 2-tube coil, is correctly
electrically connected and that the sensing element is in contact with the water
inlet pipe.
. The controller is correctly set up (refer to the Installation parameters procedure)
- If operating with an electric heater, check that the T°C limiter is activated.
No refrigeration
- Check that:
. The cooling setpoint temperature is less than the measured and displayed
temperature
. Terminals S2 and
┴
are not connected by a shunt in case of a cooling-only 2-tube
configuration, with or without electric heater
. Any room changeover sensor, in case of a reversible 2-tube coil, is correctly
electrically connected and that the sensing element is in contact with the water
inlet pipe
. The controller is correctly set up (refer to the Installation parameters procedure)
The fan always remains at high speed.
- Check that:
. The water inlet T° is correct
. The water flow rate is sufficient
. The installation has been correctly bled
. The control parameters are suitable (proportional band, integral time).
. The ventilation is not in manual position III.
10 - MEASURING THE TEMPERATURE
The V300 offers the possibility of controlling the air temperature via a return sensor or a room sensor (P11).
If you can choose between the two, it is preferable to opt for the indoor environment sensor, since it provides a better picture of
the room temperature.
The indoor environment sensor is situated inside the user terminal unit. When it is used, particular care must be taken in choosing
the location of the user terminal in the room (do not expose it to sunlight, or place it on top of a device giving off heat - put it on
an inside partition).
The end of the wiring conduit must be heat insulated.
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