3.14AC Panel

The AC Panel lists the indoor units of a Daikin VRV system. For the selected unit it shows and controls on/off, set point and mode, and it has a global set temperature that is pushed to every unit. The panel has almost no settings of its own: the units and the Modbus connection are set up in the AC Manager.

#When to use it

Use it when the building has a Daikin VRV system with the Daikin Home Automation Modbus adapter (D3net) and you want one page that controls all indoor units. For a single air conditioner or thermostat on KNX use an HVAC object instead. Put the panel alone on its own page: in the apps it fills the whole screen.

#What you need first

1. Modbus device. Open Server > Interfaces > RS485 Interface (the AC Manager lists RS485 devices only), turn Enabled on, set the serial parameters, click Configure RTU Devices and add the adapter with the driver Daikin - Daikin VRV Home Automation I/F. Give it the Slave ID set on the adapter. See Modbus devices and datapoints.
2. AC Manager. Open Server > Internal services > AC Manager and turn Enabled on.

General tab

Units tab

The Group and Unit must match the indoor unit addresses of the Daikin system. The gateway polls each configured unit over RS485.

#Properties

The AC Panel has only the fields below, described in Common properties. There is no Text Style, Protocol or image field.

#How it behaves in the apps

• The panel is headed VRF air conditioning, with the number of indoor units and how many are running.
• Unit list: each indoor unit shows its name, room temperature and a mode label. Select one to see its details. Units of the Daikin adapter that are not part of the AC Manager are listed under Additional units and are read only.
• Selected unit: an On / Off switch, Set temperature (a dial from 16 to 30 °C), Room temperature with the difference to the setpoint, Mode (Cool, Heat, Auto and the other modes the unit offers) and Fan speed (Auto, Low, Med, High). When the unit reports a warning or a malfunction, its error code is shown with a Reset Filter button.
• Global settings: a Global set temperature dial that is locked until you press the lock button (Lock setpoints / Setpoints unlocked), and Apply to all to send it to every unit one by one, which can take many seconds on a large system. A Global mode selector and Turn all on and Turn all off buttons act on all units at once.
• If the adapter cannot be reached, the status stays at "--" and the Veltnova client shows "AC adapter not connected".

#Example

A villa with 6 indoor units on the Daikin adapter, slave address 1:

1. In RS485 Interface, turn Enabled on, then add an RTU device Daikin VRV, driver Daikin - Daikin VRV Home Automation I/F, Slave ID 1.
2. In AC Manager, set Enabled on, Modbus RTU Device Daikin VRV, Number of Indoor Units 6.
3. Open Configure Units and rename the units Living, Kitchen, Master bedroom, Bedroom 2, Bedroom 3 and Majlis, keeping Group 1 and Units 00 to 05.
4. Add an AC Panel on a page called Air conditioning and deploy.

#Tips and common problems

• The unit list is empty in the app: the AC Manager has no units, or the project has not been deployed since you added them.
• All units show "--": the RS485 interface is not enabled, the Slave ID or serial parameters do not match the adapter, or no Modbus RTU Device is selected. Check Diagnostics with the Modbus register test described in Modbus devices and datapoints.
• Wrong unit responds: Group and Unit do not match the Daikin addressing. Compare them with the adapter's unit list.
• Apply to All Units is greyed out: the global control is locked. Press the lock button first.
• The AC Panel is for Daikin VRV through this adapter only. Other air conditioners need an HVAC object with KNX addresses.

#See also

• HVAC
• Modbus devices and datapoints
• Common properties
• Deploying to a gateway
• Gateway console and logs