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Alarms
Boiler's alarms
If the system WIFI modem - APP - Opentherm
termostat is working, the APP will show the sym-
bol on the side drop-down menu. By clicking
it, the alarm code "E…" will show, with a short de-
scripon and some instrucons.
On the boiler's handbook you'll nd a dedicat-
ed paragraph and a table that lists the possible
alarms and relevant, more detailed instrucons.
We suggest you to read it and to call the Assis-
tance Service whenever you have diculty solv-
ing the problem with the procedures reserved for
the User.
Note: as in all cases of malfunconing of any
device, the alarms provide an indicaon of
the most probable cause (to be invesgated
rst) but not exclusive of other problems, to
be xed by the Technician.
Kit-related alarms: E91 - E94
In case of failure of the system WIFI modem -
APP - Opentherm termostat, the APP will show
the symbol on the side drop-down menu.
By clicking it, one of the alarms listed below will
show, with a short descripon and some instruc-
ons.
E91 This alarm showing on the APP can be
triggered by dierent causes. Please, look
at the boiler's display and read the alarm
code shown on it:
if the alarm E91 is present on boiler's dis-
play too, the problem is relevant to the sys-
tem pressure transducer in the boiler;
if the boiler displays E31, the electrical link
between the boiler and the WIFI modem
could be faulty (interrupted or subject to
noise); see also "Electrical connecons" on
page 14
E94 This alarm showing on the APP can be
triggered by dierent causes. Please, look
at the boiler's display and read the alarm
code shown on it:
if no error code is displayed on the boiler,
the problem is probably located on the link
(interrupted or subject to noise) between
the WIFI modem and the Opentherm ter-
mostat (see also "Electrical connecons"
on page 14). In case of interrupon, the
Remote Control's display should be o;
if E31 appears on the boiler display, there is
a problem with the electrical connecons
between the boiler, WIFI modem and/or
Opentherm termostat (see also "Electrical
connecons" on page 14).
21


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