Daikin Modular-Light AHU, Руководство пользователя

Страница: 11 / 12

Modular-Light AHU User Manual
11
2. Navigate through the different available states by pr or – buttons (Cool, Heat)
3. Confirm the change of state by pressing for at least 1 second the OK button
4. To return to the main screen page without taking any action, either press the Home button
or wait for 5 seconds
NOTE! When icon appears on the Room Unit main screen, the Summer/Winter change source
on the main controller has been set on Auto during commissioning phase and Summer/Winter
cannot be changed via Room Unit.
3.5 Alarms
When the alarm icon appears on the interface, an alarm has occurred on the unit. In order to check unit
status and actual alarm code, the user must go to the alarm code screen page.
A long press of the OK button will get the user on the alarms code screen page. Another long press of
the OK button will attempt to reset the alarm, if possible. Please contact your local Daikin service
representative if you need additional support.
The alarm code consists of four slots. The first two represents the alarm type, with the following meanings:
- FL -> Fault alarm (unit stops)
- OP -> Operation alarm (unit keeps running)
The other part of the string represents the numeric code of the alarm. For a complete list of alarm code,
check the following table:
Alarm Code Alarm String Description
OP01
Filter alarm
Supply or Return filter dirty:
differential pressure switch of the filters detected an high pressure
difference pressure between input and output of the filter. Check filters
status.
OP02
Air quality (CO
2
)
sensor alarm
CO
2
percentage too high:
measured value of CO
2
is out the allowable range or error condition on
the air quality sensor (not connected or broken).
FL04
Supply fan alarm
Error condition on Supply fan:
Supply fan has detected a failure. Check fan status.
FL05 Return fan alarm
Error condition on Return fan:
Return fan has detected a failure. Check fan status.
FL06
Heating/Cooling
Coils alarm
Error condition on Heating/Cooling coils:
one or more heating/cooling coils have detected a failure. Check their
status.
FL07
Heat Recovery freeze
alarm
Heat Recovery freeze alarm active:
unit heat recovery freeze protection has intervened to prevent damage
to the device and has turned off the unit. After a time period, the unit
will automatically reset the alarm and start again.