Delta Dore 620 RADIO DRIVER - Manual (Page 15)

Nothing is displayed on the room unit screen.
There is no power supply.
Check the batteries or their polarity.
The
i
symbol flashes.
A fault has been detected in the system.
Press the button to consult the fault or faults.
The unit displays: dEF7.
Communication fault with the electronic meter.
Check the connection with the meter.
The unit displays: dEF and a number other than dEF 7
There is a fault on the unit that requires it to be returned to
our after-sales service.
Contact our customer service department.
The symbol flashes.
You are in tariff reduction mode.
Refer to the Tempo tariff section.
Troubleshooting
- 29 -
The purpose of this section is to help you quickly solve
the most common problems that you may encounter
with your product during use.
If you're unsure, or if the problem persists or isn't in
this list, contact our customer service department.
- 28 -
Sep a r a te the thermo s t a t
from it s su pport
Po s ition the thermo s t a t
on it s bas e
Lock the thermo s t a t
Repl a ce the ba tterie s , m a king su re
they a re the right w a y ro u nd
1
2
3 4
Replacing batteries