Sime VERA HE 25, User, Installation And Servicing Instructions

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76
EN
8.5 Unscheduled maintenance
Type No. Description
Setting for
Vera HE
25 30
tS 0.1
Index showing boiler power
in kW
6 = 25; 7 = 30
6 7
tS 0.2
Hydraulic configuration
0 = rapid
1 = storage tank with
thermostat or heating only
2 = hot water tank with
sensor
3 = bithermic
4=instant with solar power
input
5 = open vent
0
tS 0.3
Gas Type Configuration
0 = G20; 1 = G31
0 or 1
If replacing the electronic board , the user MUST set the
parameters as indicated in the table.
To enter "Parameter setting and display"refer to the
indications provided in the specific section.
Once the parameters in the table have been set, you must
carry out the entire phase of "Self-calibrating procedure"
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 user must still carry
out the entire phase of "Self-calibrating procedure" 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 03 High water pressure
in system
- Empty the system via the
drain valve on the hydraulic
assembly and bring the
pressure to approximately
1.2 bar
AL 04
Domestic hot water
sensor fault (return
sensor fault for T
models)
- Check connections
- Check the sensor is working
AL 05 Delivery sensor
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 integrity of the gas
valve and the card
AL 07
Sensor or safety
thermostat
intervenes
- Check the sensor or
thermostat connections
- Deaerate the system
- Check the bleed valve
- Replace the sensor or the
thermostat
- Check that the pump impeller
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 integrity of the gas
valve and the card
Type No. Fault Solution
AL 09 No water circulating
in the system
- Check the rotation of the
pump rotor
- Check the electrical
connections
- Replace the pump
AL 10 Auxiliary sensor
fault
- Check the hydraulic
configuration using "tS 0.2"
- Check the electrical
connection
AL 11 Gas valve modulator
disconnected
- Check the electrical
connection
AL 12
Domestic hot water
sensor fault in tank
mode
- Set the parameter tS 0.4
(Combustion configuration)
to 0
AL 13 Smoke probe
intervention
- Check the sensor is working
- Replace the smoke probe
AL 14 Smoke probe fault
- Replace the smoke probe
- Check the electrical
connection of the smoke
probe
- Contact the Technical
Assistance Centre
AL 15 Fan check cable
disconnected
- Check the connection cable
between the fan and the
board
AL 18 Condensate level
fault
- Check for any clogging in
the pipe which takes the
condensate to the siphon
- Check that the siphon is not
clogged
AL 28
Maximum number
of consecutive
resets reached
- Wait 1 hour and try
unblocking the board again
- Contact the Technical
Assistance Centre
AL 30
Return sensor fault
(boiler sensor fault
for T models)
- Replace the return probe
- Check parameters
- Contact the Technical
Assistance Centre
AL 37 Fault due to low
network voltage.
- Check the voltage
- Contact your network
provider
AL 40 Incorrect network
frequency detected
- Contact your network
provider
AL 41
Flame loss more
than 6 consecutive
times
- Check the ignition/detection
electrode
- Check the gas supply (open
valve)
- Check mains gas pressure
AL 42 Button fault
- Check that buttons are
working
AL 43
Open Therm
communication
fault
- Check the OT electric
connection
AL 44 Gas valve timeout
fault without flame
- Check gas valve and board
AL 56
Lock for ∆T
delivery/return over
max limit (open
vent)
- Contact the Technical
Assistance Centre
AL 57
Lock for flow
temperature (FT)
check (open vent)
- Contact the Technical
Assistance Centre
AL 62
Self-calibrating
procedure is
required
- Carry out the self-calibrating
procedure (see the specific
section)
AL 72
Incorrect
positioning of the
delivery sensor
- Check delivery sensor
operation and position
AL 74 Second delivery
sensor fault
- Check second delivery sensor
operation and position
AL 77
EV2 SGV current
max/min absolute
limits error
- Check gas valve and board