Unscheduled Maintenance; Malfunction Codes And Possible Solutions - Sime UNIQA REVOLUTION 25 Installations-, Gebrauchs- Und Wartungsanleitung

– read the combustion parameters (CO
combustion performance
– press the button < to make the boiler operate at minimum
power "Lo" and check that the gas pressure values on the
pressure gauges correspond to those indicated in the table
below. The message "Lo" will appear on the display together
with the flashing symbols
– press the button > once again to make the boiler operate at
maximum power. If the gas pressure values are correct it is
possible to determine the combustion data and take a reading
of the combustion efficiency as provided for by legislation in
force
– press the button y
dure". The boiler water delivery temperature will appear on
the display
– close the taps opened previously and check that the appliance
shuts down
– disconnect the pressure gauges, carefully close the pressure
points (6) and (7), put the control panel back to the original
position and refit the front panel (2).
Gas supply pressure
Type of gas
Pressure (mbar)
Installations with SPLIT and CONCENTRIC flue gas outlet pipe
systems
Model Heat Output
Max
UNIQA
REVOLUTION 25
min
8.6

Unscheduled maintenance

If replacing the electronic board , the user MUST set the parame-
ters as indicated in the table and in the sequence shown.
Type No. Description
Index showing boiler power in kW
PAR 01
0 = 25
Hydraulic configuration
PAR 02
5 = Low NOx ErP
Gas Type Configuration
PAR 03
0 = G20; 1 = LPG
Combustion configuration
PAR 04
3 = Low NOx ErP APS
46
particularly) and the
2
l and n
to exit the "Chimney sweeper Proce-
G20 G31
20 37
Pressure at nozzles (mbar)
G20
13,3 - 13,8 35,2 - 35,7
2,9 - 3,2 6,1 - 6,5
Setting
for
REVOLUTION 25
0 or 1
To enter "Parameter setting and display"refer to the indica-
tions provided in the specific section.
Once the parameters in the table have been set, you must carry
out the "Automatic calibration procedure".
If the gas valve and/or the ignition/detection electrode and/or the
are replaced, the user must still carry out the entire phase
fan
of "Automatic calibration procedure" described in the specific
section.
8.7

Malfunction codes and possible solutions

a
WARNING
If, with the HEATING or DOMESTIC HOT WATER re-
quest active, the boiler fails to work (the
quest symbol appears on the display), verify that the
fan's fuse (1), installed on the fan's power cable, is
working. If not, replace it.
LIST OF MALFUNCTION/FAULT ALARMS
Type No.
ALL 02
ALL 03
ALL 04
ALL 05
G31
ALL 06
ALL 07
UNIQA
-
0
ALL 08
5
3
1
Fault Solution
- Restore pressure
Low water pressure in
- Check for any leaks in the
system
system
- Empty the system via the
drain valve on the hydraulic
High water pressure in
assembly and bring the
system
pressure to approximately
1.2 bar
Domestic hot water - Check connections
sensor fault - Replace the sensor
- Check connections
Delivery sensor fault
- Replace the sensor
- Check the integrity of the
electrode and check that it
is not grounded
No flame detection - Check gas availability and
pressure
- Check the integrity of the
gas valve and the card
- Check the delivery sensor
connections
- Deaerate the system
Safety thermostat
- Check the bleed valve
intervention
- Replace the delivery sensor
- Check that the pump
impeller is not blocked
- Check the integrity of the
electrode and check that it
is not grounded
Fault in the flame
- Check gas availability and
detection circuit
pressure
- Check the integrity of the
gas valve and the card
t or r re-
Fig. 63