Replacement Of The Batteries; Communication Loss; Fail-Safe Mode Setup; Troubleshooting - Hitachi ATW-RTU-05 Manual De Instalación Y Funcionamiento

REPLAcEMENT OF THE BATTERIES

7 If binding has been successful the number indicates the
signal strength (1 = min to 5 = max). If binding fails, appears
on screen. Please try again.
Successful binding
Failed binding
8 The green LED on the RF Receiver will flash green every 10
seconds to indicate that the device is live.
4 REPLACEMENT OF THE BATTERIES
1 Pull to remove the dial ring.
2 Detach the thermostat from the base.
3 Replace the batteries as shown at the picture.
4 Attach the thermostat to the base.
5 Place the dial ring.

5 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 Thermostat, 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 YUTAKI
and RF Receiver, then the LED on the RF Receiver will flash
red 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

6 FAIL-SAFE MODE SETUP

The fail-safe mode defines the system status if the RF
communication is lost (e.g. when the Room thermostat stops
communicating due to discharged batteries).

7 TROUBLESHOOTING

Symptom (Fault Message)
The receiver box does not react to setpoint
changes on the room thermostat.
The red LED is on the receiver box
(communication loss)
6 PMML0411A rev.0 - 03/2016
?
Binding can be cancelled from the binding screen by touching and holding
on the left touch zone for approximately 10 seconds.
9 If binding is unsuccessful, then the LED will stay on. In this
case, move the rom thermostat and repeat the procedure
from the beginning.
10 To bind the second room thermostat, repeat the procedure
from step 2 to 8 to bind the second room thermostat.
?
• The first binding is saved as Thermostat 1, and the second binding (if
necessary) is saved as Thermostat 2.
• The selection of the zone in which Room thermostat will be used is
done at the Room thermostat menu in the YUTAKI LCD Controller
(PC-ARFHE).
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 "3 Binding the Wireless thermostat and RF Receiver".
The system will continue to operate at the last communicated
setpoint.
Possible Cause
The room thermostat and receiver box are not
bound.
The receiver box receives no RF messages
from the room thermostat:
RF signal is blocked due to wrong location of
the room thermostat.
Room thermostat batteries are exhausted.
N O T E
N O T E
Reset the receiver box by pressing and holding
the push button for 15 seconds. Then follow
the binding / rebinding procedure as described
in section "3 Binding the Wireless thermostat
and RF Receiver".
Re-locate the room thermostat.
Replace batteries in the room thermostat.
Remedy