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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
Edea T
25
(*) 35
PAR 01
Index showing for boiler
power in kW
G20 0 or 1 5
G31 6 or 7 11
PAR 02
Hydraulic configuration
0 = combi
1 = system
2 = N/A
3 = N/A
4=instant with solar power input
5 = open vent
6 = boiler with heat pump
2
(*) To set parameter PAR 01 correctly, check the fan model on
the technical data plate and set the parameter according
to the installed model as described in the paragraph "List
of parameters".
To enter "Parameter setting and display" refer to the indica-
tions provided in the specific section.
8.6 Malfunction codes and possible solutions
LIST OF MALFUNCTION/FAULT ALARMS
Type No. Fault Solution
ALL 02
Low water pressure
in system
- Restore pressure
- Check for any leaks in the
system
ALL 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
ALL 04
Domestic hot water
sensor fault (return
sensor fault for T
models)
- Check connections
- Check the sensor is
working
ALL 05
Delivery sensor (SM)
fault
- Check connections
- Check the sensor is
working
ALL 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
ALL 07
Safety thermostat
intervention
- Check the thermostat
connections
- Deaerate the system
- Check the bleed valve
- Replace the thermostat
- Check that the pump
impeller is not blocked
ALL 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
ALL 09
No water circulating
in the system
- Check the rotation of the
pump rotor
- Check the electrical
connections
- Replace the pump
Type No. Fault Solution
ALL 10 Auxiliary sensor fault
- Check PAR 02 "hydraulic
configuration"
- Check the electrical
connection
ALL 11
Gas valve modulator
disconnected
- Check the electrical
connection
ALL 12
Domestic hot water
sensor fault in tank
mode
- Set the parameter PAR 04
(Combustion configura-
tion) to 0
ALL 13
Exhaust sensor (SF)
intervention
- Check the sensor is
working
- Replace the smoke probe
ALL 14
Exhaust sensor (SF)
fault
- Replace the smoke probe
- Check the electrical
connection of the smoke
probe
- Contact the Technical
Assistance Centre
ALL 15
Fan check cable
disconnected
- Check the connection
cable between the fan
and the board
ALL 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
ALL 28
Maximum number of
consecutive resets
reached (6)
- Wait 1 hour and try un-
blocking the board again
- Contact the Technical
Assistance Centre
ALL 30
Return sensor fault
(boiler sensor fault
for T models)
- Replace the return probe
- Check parameters
- Contact the Technical
Assistance Centre
ALL 37
Fault due to low net-
work voltage
- Check the voltage
- Contact your network
provider
ALL 40
Incorrect supply fre-
quency detected
- Contact your network
provider
ALL 41
Flame loss more than
6 consecutive times
- Check the ignition/detec-
tion electrode
- Check the gas supply
(open valve)
- Check mains gas pres-
sure
ALL 42 Button fault
- Check that buttons are
working
ALL 43
Open Therm commu-
nication fault
- Check the OT electric
connection
ALL 44
Gas valve timeout
fault without flame
- Check gas valve and
board
ALL 72
Incorrect positioning
of the delivery sensor
- Check delivery sensor
operation and position
ALL 80
Fault on the valve
control logic line/
valve cable damaged
- Check gas valve and
board
ALL 88
Internal error (board
component protec-
tion)
- Check the board is
working
- Replace board
ALL 95
Flame signal micro
interruptions error
- Check electrode
- Check board
- Check electric power
supply
- Check gas calibration
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