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DIVAtop MICRO F
•
Make sure that the fuel consumption indicated on the meter corresponds to that giv-
en in the technical data table in sec. 5.3.
•
Make sure that with no call for heating the burner correctly ignites on opening a hot
water tap. Check that during heating operation, on opening a hot water tap, the heat-
ing circulator stops and there is a regular production of hot water.
•
Check the parameters are programmed correctly and perform any required custom-
ization (compensation curve, power, temperatures, etc.)
4.3 Maintenance
Periodical check
To ensure proper operation of the unit over time, have qualified personnel carry out a
yearly check, providing for the following:
•
The control and safety devices (gas valve, flowmeter, thermostats, etc.) must func-
tion correctly.
•
The fume exhaust circuit must be perfectly efficient.
(Sealed chamber boiler: fan, pressure switch, etc. - The sealed chamber must be
tight: seals, cable glands, etc.)
(Open chamber boiler: anti-backflow device, fume thermostat, etc.)
•
The air/fume terminal and ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits. For cleaning do not
use chemical products or wire brushes.
•
The electrode must be free of scale and properly positioned.
•
The gas and water systems must be tight.
•
The water pressure in the cold water system must be approx. 1 bar; otherwise bring
it to that value.
•
The circulating pump must not be blocked.
•
The expansion tank must be filled.
•
The gas flowrate and pressure must match that given in the respective tables.
The boiler casing, control panel and aesthetic parts can be cleaned with a soft
A
damp cloth, if necessary soaked in soapy water. Do not use any abrasive de-
tergents and solvents.
Opening the casing
To open the boiler casing:
1.
Undo the screws A (see fig. 27).
2.
Turn the casing (see fig. 27).
3.
Lift the casing.
B
Before carrying out any operation inside the boiler, disconnect the electrical
power supply and close the gas cock upstream
A
1
A
fig. 27 - Opening the casing
Combustion analysis
Two test points are provided at the top of the boiler, one for fumes (ref. 1 - fig. 28) and
the other for air (ref. 2 - fig. 28). To take samples:
1.
Open the air/fume test point plug;
2.
Insert the probes as far as the stop;
3.
Make sure the safety valve is connected to a drain funnel;
4.
Activate the TEST mode;
5.
Wait 10 minutes for the boiler to stabilise;
6.
Take the measurement.
1
fig. 28 - Fume analysis DIVAtop MICRO F 24
3
2
2
cod. 3540S263 -
4.4 Troubleshooting
Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In case of a boiler fault,
the display will flash together with the fault symbol (detail 22 - fig. 1) indicating the fault
code.
There are faults that cause permanent shutdown (marked with the letter "A"): to restore
operation just press the RESET button (detail 8 - fig. 1) for 1 second or RESET on the
optional remote timer control if installed; if the boiler fails to start, it is necessary to first
eliminate the fault.
Other faults (marked with the letter "F") cause temporary shutdowns that are automati-
cally reset as soon as the value returns within the boiler's normal working range.
Table of faults
Table. 5 - List of faults
Fault
Fault
Possible cause
code
No gas
Ignition/detection electrode fault
A01
No burner ignition
Faulty gas valve
Ignition power too low
Electrode fault
Flame present signal
A02
with burner off
Card fault
Heating sensor damaged
Overtemperature pro-
A03
tection activation
No water circulation in the system Check the circulating pump
Air in the system
The air pressure
Incorrect air pressure transducer
transducer does not
wiring
F05
receive a sufficient
Flue obstructed or not correctly
minimum value within
sized
25 seconds
Low pressure in gas system
No flame after ignition
A06
phase
Burner minimum pressure setting
Sensor damaged
F10
Delivery sensor 1 fault
Wiring shorted
Wiring disconnected
Sensor damaged
F11
DHW sensor fault
Wiring shorted
Wiring disconnected
Sensor damaged
F14
Delivery sensor 2 fault
Wiring shorted
Wiring disconnected
Air signal protection
Fault F05 generated 5 times in the
A15
activation
last 15 minutes
Supply voltage under
F34
Electric mains trouble
170V.
Faulty mains fre-
F35
Electric mains trouble
quency
Pressure too low
Incorrect system
F37
water pressure
Sensor damaged
Probe damaged or wiring shorted
F39
External probe fault
Sensor disconnected after activat-
ing the sliding temperature
Incorrect system
F40
Pressure too high
water pressure
Delivery sensor detached from
A41
Sensor positioning
pipe
F42
Heating sensor fault
Sensor damaged
No system H
Exchanger protection
F43
activation.
Air in the system
System water pres-
F47
Wiring disconnected
sure sensor fault
F50
Modureg fault
Wiring disconnected
Cure
Check the regular gas flow to the
boiler and that the air has been elimi-
nated from the pipes
Check the wiring of the electrode and
that it is correctly positioned and free
of any deposits
Check the gas valve and replace it if
necessary
Adjust the ignition power
Check the ionisation electrode wiring
Check the card
Check the correct positioning and
operation of the heating sensor
Vent the system
Check the wiring
Check the length of flue and that it is
clean
Check the gas pressure
Check the pressures
Check the wiring or replace the sen-
sor
Check the wiring or replace the sen-
sor
Check the wiring or replace the sen-
sor
See fault F05
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Check the wiring or replace the sen-
sor
Reconnect the external probe or dis-
able the sliding temperature
Check the system
Check the safety valve
Check the expansion tank
Check the correct positioning and
operation of the heating sensor
Replace the sensor
O circulation
Check the circulating pump
2
Vent the system
Check the wiring
Check the wiring
EN
43
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