Smart Hub
Part number: COCBH
Description
The COCBH Smart Hub is the Wi-Fi gateway for iZone Nova systems. It manages 433MHz RF communication between the C225 CPU and the Nova wall controller, and provides internet connectivity for the iZone Home mobile app. Comes pre-paired with Nova wall controllers in C535K/C536K/C545K/C546K kits.
Do not connect the COCBH to your Wi-Fi modem until after commissioning is complete.
Installation guide
Installation notes
- The COCBH comes pre-paired with Nova wall controllers — no manual pairing needed in new kits
- Position the hub where it has strong RF signal to the C225 (typically in the roof space near the C225)
- If RF range is a problem, add a repeater (CR) between the COCBH and C225
- Connect to home Wi-Fi modem only after system commissioning is complete
- For iZone Home app access, register at trade.izone.com.au and create a customer iZone account
- For home automation integration, use the Ethernet port on the COCBH
Specifications
| Entry | Description |
|---|---|
| Model number | COCBH |
| Power supply | 12V DC (included adapter) |
| Wireless | 433MHz RF (iZone) · 2.4GHz Wi-Fi |
| Ethernet port | Yes — for home automation integration |
| App connectivity | iZone Home (iOS & Android) |
Included in
Related parts
Documents
Troubleshoot guide
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Nova wall controller screen is blank or unresponsive
The Nova or Nova Mini touch screen fails to power on or goes black.
Steps to resolve:
- Check the power supply (CTDC12) connection to the Nova wall controller
- Check the Cat5e cable between the CSL Screen Link Module and the Nova — try a different port on the CSL
- Re-pair the CSL to the C225 CPU if the connection has been lost
- Replace the cable if the issue persists
- If still unresolved, contact your installer — the CSL or C225 CPU may need to be replaced
Zones are not opening or responding
One or more zones are unresponsive when commanded from the Nova wall controller.
Steps to resolve:
- Move the zone motor cable to a different port on the C225
- In the Nova app, go to Setup → Configure AC → Options → Skip Zone Port (password:
wamfud) and skip the faulty port - Verify the CT24ACE transformer is powered and outputting ~24VAC
- Check all wiring connections are fully seated
Note: On Daikin systems, it can take up to two minutes for dampers to open after a command is sent.
Nova controller not communicating with C225 CPU
The Nova wall controller shows no connection to the system.
Steps to resolve:
- Confirm the COCBH Smart Hub is powered and the Nova shows the Wi-Fi symbol
- Re-pair the CSL to the C225 if pairing has been lost
- Ensure the Smart Hub was not connected to the internet modem before commissioning was completed — if it was, disconnect it, factory reset the COCBH, and recommission the system
- Add a repeater (CR) if the Smart Hub is out of range of the C225
Temperature sensor not showing actual temperature
A zone shows no temperature reading despite having a sensor fitted.
Steps to resolve:
- Press the button on the sensor — if no lights appear, the battery needs replacing (CR2032)
- If the sensor flashes instead of showing solid red or blue, it needs re-pairing: press and hold the pair button, then pair through Menu → Devices in the iZone app
- Ensure the CDTS in-duct sensor is installed upstream of all dampers in the supply air duct
- Check the sensor is not obstructed by furniture or exposed to direct sunlight
Firmware history
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- Remote firmware upgrade support added
- Improved RF reliability in high-interference environments