Climit 24 BF, User Instructions

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96
EN
8.7 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 sen-
sor 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 thermo-
stat 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 de-
tection circuit
- Check the integrity of
the electrode and check
that it is not grounded
- Check the integrity of
the gas valve and the
card
AL 09
No water circulating in
the system
- Check the rotation of the
pump rotor
- Check the electrical
connections
- Replace the pump
AL 11
Gas valve modulator
disconnected
- Check the electrical
connection
AL 12
Domestic hot water sen-
sor fault in tank mode
- Set the parameter tS 0.4
(Combustion configura-
tion) to 1
AL 17
Fault regarding maximum
deviation between the 2
NTC heating sensors
- Replace the dual sensor
AL 28
Maximum number of con-
secutive resets reached
- Wait 1 hour and try
unblocking the board
again
- Contact the Technical
Assistance Centre
AL 37
Fault due to low network
voltage
- Check the voltage
- Contact your network
provider
AL 40
Incorrect network fre-
quency detected
- Contact your network
provider
AL 41
Flame loss more than 6
consecutive times
- Check the ignition/de-
tection electrode
- Check the gas supply
(open valve)
- Check mains gas
pressure
AL 42 Button fault
- Check that buttons are
working
AL 43
Open Therm communica-
tion fault
- Check the OT electric
connection
AL 44
Gas valve timeout fault
without flame
- Check gas valve and
board
AL 62
The self-calibrating pro-
cedure must be carried
out
- Carry out the self-cali-
brating procedure (see
the specific section)
Type No. Fault Solution
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 80
Fault on the valve control
logic line/valve cable
damaged
- Check gas valve and
board
AL 81
Block due combustion
during start-up
- Check for blockage in
chimney
- Check air diaphragm
(for BF models)
- Check gas calibration
- Bleed the air from the
gas circuit
AL 83
Irregular combustion
(temporary error)
- Check for blockage in
chimney
- Check air diaphragm
(for BF models)
- Check gas calibration
AL 88
Internal error (board
component protection)
- Check the board is
working
- Replace board
AL 96
Block due to clogging in
smoke outlet
- Check for blockage in
chimney
- Check the smoke outlet
and electrode posi-
tion (not touching the
burner)
- -
Frequent relief valve
intervention
- Check circuit pressure
- Check expansion vessel
- -
Limited production of
domestic hot water
- Check the diverter valve
- Check that plate heat
exchanger is clean
- Check domestic hot
water circuit valve
8.7.1 Maintenance request
When it is time to perform maintenance on the boiler, "SE" shows
on the display.
Contact the technical assistance service to organise the necessary
work.