Sime MIA-30, User, Installation And Servicing Instructions

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– refit the assembly by carrying out the same operations for
removal but in the reverse order and tighten the screws (9)
of the door to the combustion chamber
– mount the nozzle (16) back on and adjust it so that the flared
part faces downwards, as shown in the figure
17
Fig. 50
– reconnect the connections to the fan and the electrode.
8.4 Checks
8.4.1 Checking the flue
Check that the flue is undamaged and complete.
8.4.2 Checking the expansion vessel pressure
It is recommended that the expansion vessel on the water side
is drained and that the prefilling pressure is not less than 1
bar
. If this is not the case, pressurize it to the correct value
(see section "Expansion vessel").
Once the checks described above have been completed:
– refill the boiler as described in section "SYSTEM Filling"
– check that the siphon has been filled correctly
– Start the boiler, activate the "Chimney sweep function" and
carry out combustion analysis as detailed in Appendix 2
– refit the front panel securing it with the two screws which
were removed previously.
8.5 Circuit Board Replacement
Should the circuit board be replace, the engineer
MUST set
the parameters
as indicated in this table and in the sequence
shown.
Type No. Description
Setting for
MIA-30
tS 0.1 Index showing boiler power in kW
1 = 30
1
tS 0.2
Hydraulic configuration
0 = combi
1 = system
2 = N/A
3 = N/A
4=instant with solar power input
5 = open vent
0
tS 0.3 Gas Type Configuration
0 = G20; 1 = G31
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 car-
ry out the entire phase of "Automatic self-calibrating proce-
dure" described in the specific section.
If the
gas valve
and/or the
ignition/detection electrode
, and/or
the
burner
, and/or the
fan
are replaced, the engineer must still
carry out the entire phase of "Automatic self-calibrating pro-
cedure" described in the specific section.
8.6 Malfunction codes and possible solutions
LIST OF MALFUNCTION/FAULT ALARMS
Type No. Fault Solution
AL 01 Smoke thermostat
- Contact the Technical
Assistance Centre
AL 02 Low water pressure in
system
- Restore pressure
- Check for any leaks in the
system
AL 04
Domestic hot water
sensor fault (return
sensor fault for T
models)
- Check connections
- Check the sensor is
working
AL 05 Delivery sensor (SM)
fault
- Check connections
- Check the sensor is
working
AL 06 No flame detection
- Check the integrity of the
electrode and check that it
is not grounded
- Check gas availability and
pressure
- Check the operation of the
gas valve
AL 07 Safety thermostat (TS),
intervention
- Check the sensor or ther-
mostat connections
- Deaerate the system
- Check the bleed valve
- Replace the sensor or the
thermostat
- Check that the pump im-
peller is not blocked
AL 08 Fault in the flame
detection circuit
- Check the integrity of the
electrode and check that it
is not grounded
- Check the operation of the
gas valve
AL 09 No water circulating in
the system
- Check the rotation of the
pump rotor
- Check the electrical con-
nections
- Replace the pump