Prolonged Shutdown. Anti-Freeze Protection; Gas Conversion; Faults - Baxi LUNA DUO-TEC MP+ 1.115 Instruction Manual For Users And Fitters

2. PROLONGED SHUTDOWN. ANTI-FREEZE PROTECTION

boiler and the heating elements. If the boiler is not used during winter and is therefore exposed to the danger of frost, add some
boiler management system includes a "frost protection" function for the heating system which, when delivery temperature falls

3. GAS CONVERSION

The boilers can operate both on natural gas (G20) and LPG (G31). All gas conversions must be made by the AUTHORISED
TECHNICAL SERVICE CENTRE.

4. FAULTS

complete list of faults, see the following table.
If appears on the display the fault must be RESET by the user.
To RESET the boiler, press
Description of fault
10
External probe sensor
20
28 NTC fumes sensor
40
NTC DHW sensor
50
(only for heating-only model with storage boiler)
52
Solar DHW sensor (if connected to a solar plant)
73 Solar manifold sensor (if connected to a solar plant)
Communication problem between boiler board and control
83
unit. Probable short circuit on wiring.
84
(internal fault)
98
Accessory not detected or recognized (*)
109
Air in boiler circuit (temporary fault)
110
(**) tripped due to over temperature (pump probably blocked
or air in heating circuit)
111 Safety thermostat tripped due to overtemperature.
117
Pressure in hydraulic circuit too high
118
Pressure in hydraulic circuit too low
No circulation safety trip
125
(control performed via a temperature sensor)
(*)
After powering up the boiler (or after a Reset for lockout), the error appears on the display once the self-check is completed. The fault code
is displayed permanently if the accessory is not recognized.
(**) See Section "ADJUSTMENT AND SAFETY DEVICES".
. If faults are displayed frequently, call the Authorised Service Engineer.
and a number (fault code). For a
Description of fault
128
130 Fumes NTC tripped due to overtemperature
133 Ignition failure (4 attempts)
151
Boiler board internal fault
152 Generic parameter setting error
Forced reset when the Reset button is pressed and held
153
for more than 10 seconds (see section "FAULTS THAT
CANNOT BE RESET BY THE USER")
160 Fan fault
Flue pressure switch action (see section "FAULTS THAT
162
CANNOT BE RESET BY THE USER")
321
NTC domestic hot water sensor faulty
Generic parameter setting error of solar plant
343
(if connected to a solar plant)
384
385
Input voltage too low
386 Fan speed threshold not reached
No circulation safety trip
430
(control performed via a pressure sensor)
No functional hearth or safety thermostat tripped due to
432
over temperature (E110)
29 7690785.01 (1-05/18)