Immergas EOLO Mini Technical Documentation Manual page 28

Technical documentation
NTC delivery sensor fault
(NM)
Overheating lock
(TS1 and TS2))
Pump post- circulation
Sealed chamber post-
ventilation
LD1
(yellow LED) (red LED)
off
flashing
ON = 0.2 s
OFF = 4,5 s
flashing
ON = 1 s
OFF = 1 s
flashing
ON = 1 s
OFF = 1 s
on
off flashing
off
simultaneous flashing
STEME ed 07/03
In case of NTC delivery sensor (NM) breakage, the low-voltage circuit prevents burner
operation.
The tripping of this device is indicated by the flashing of yellow LED LD1.
In the event of the overheating thermostat (TS1 and TS2) contact being opened, boiler
operation is stopped.
To start the appliance again, the main switch (IG) must be temporarily moved to
RESET position and a central-heating request made.
The tripping of the safety device is indicated by the flashing of LED LD2 (red).
To prevent the water/gas exchanger from overheating, at the end of each heating
request (opening of room thermostat or antifreeze), the circulator is kept operating for
30 seconds.
Once the burner has switched off after any request, the combustion chamber is washed
by keeping the fan (MV) working for 20 seconds.
INDICATORS
LD2
off - boiler off (no power)
- boiler in stand-by (from serial number 2238341)
off
(request standby)
off
- NTC delivery sensor (NM) breakage
on
- no circulation / bad circulation safety operation (from serial
number2238341)
(no water, pump blocked etc.)
off
- burner operating
- overheating block or presence of parasite flame
on
- ignition failure block
- flue pressure switch (SV) interception failure
Depending on their state, these indicate:
28
Technical documentation
EOLO MINI