Locating The Room Unit; Communication Loss - Hitachi ATW-RTU-02 Installation And Operation Manual

Installation and Operation Manual
6

2.2.3 Locating the Room Unit

While still in the Test Mode, as described in section 2.2.2, the Room Unit should be located taking the
following into consideration and reviewing the illustrations below:
1. Find a suitable location where the signal transmission is reliable. Reliable transmission is indicated
when the RF Receiver is flashing the green LED every 6 seconds.
2. Install the Room Unit EITHER on the wall using the wall bracket OR attach the optional table stand as
shown in below.
3. Exit the Test Mode by pressing the
• The Room Unit should be installed in an open space for best performance as it is a radio frequency device.
• Leave at least 30cm distance from any metal objects including wall boxes and at least 1 metre from any other
electrical equipment eg. radio, TV, PC etc.
• Do not mount onto metal wall boxes. • It is recommended that the RF Receiver is fully installed.

2.3 Communication Loss

In the event of an RF communications loss, the LED on the RF Receiver will indicate which type of fault
has occurred.
• If there is a communications fault between the RF Receiver and the Room Unit, then the LED on the
RF Receiver will flash red for 0.1 sec ON every three seconds
• If there is a fault in communications between the boiler or System Controller, then the LED on the RF
Receiver will flash 3 times quickly and then be off for three seconds,
• If there is more than one Room Unit installed, as in multi-zone systems for example, and communications
is lost with one zone, then the red LED on the RF Receiver will flash two times quickly and then be off
for two seconds.
• If there is more than one Room Unit installed, as in multi-zone systems for example, and communications
is lost with both zones, then the red LED on the RF Receiver will flash once for 0.1 sec ON, and 0.9 sec
OFF.
Once the faulty device has been identified, replace as necessary and follow the re-binding procedure as
described in section 4. Binding / Rebinding Procedure.
or button.
Wall bracket Table stand