Hitachi ATW-RTU-04 Installation And Operation Manual page 11

REPLACEMENT OF THE BATTERIES
4 When the symbol "bo" is flashing, rotate the setting ring until
the "Co" symbol is shown.
5 Briefly touch the left touch zone to send the binding signal,
at which point the symbol
6 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
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 below.
4 Attach the thermostat to the base.
5 Place the dial ring.
5 PMML0410A rev.0 - 03/2016
will flash several times.
7 The red LED on the Heat pump relay will turn off when
binding has been successful.
?
N O T E
Binding can be cancelled from the binding screen by touching and holding
on the left touch zone for approximately 10 seconds.