Ferroli ECONCEPT SOLAR ST Instructions For Use, Installation And Maintenance page 28

Fault
Fault
code
F21 Incorrect system water pressure
A26 System protection activation
F34 Supply voltage under 170V
F35 Faulty mains frequency
F37 Incorrect system water pressure
F39 External probe fault
F40 Incorrect system water pressure Pressure too high
A41 Sensor positioning
F42 Heating sensor fault
System water pressure sensor
F47
fault
List of faults DBM29 solar card
Fault
Possible cause
code
F82 Regulator configuration fault
F83 Solar Collector PT1000 sensor
F84 Solar Collector Return NTC sensor
F85 Boiler card communication fault
F87 Protection for no circulation
Low temperature zone card fault FZ4B
The controller indicates the boiler operating mode and its faults through the incorporated display: "St" means Standby
(no demand in progress), "CH" means that the zone controller requests the boiler for activation of heating mode, "DH"
means Domestic Hot Water production. The fault codes are given below:
Fault
Possible cause
code
F70 NTC sensor fault (T1)
F71 NTC sensor fault (T2)
F72 NTC sensor fault (T3)
F73 NTC sensor fault (T4)
F74 Communication with boiler card not present
F75 Communication with Remote Control (RT1) not present
F76 Communication with Remote Control (RT2) not present
F77 Communication with Remote Control (RT3) not present
The fault codes are also displayed in the corresponding menu of the Remote Control during normal operation.
28
Possible cause
The pressure is reaching the maximum
value
Fault F40 generated 3 times in the last hour See fault F40
Electric mains trouble
Electric mains trouble
Pressure too low
Sensor damaged
Probe damaged or wiring shorted
Probe disconnected after activating the
sliding temperature
Delivery sensor disconnected from the pipe Check correct positioning and operation of the heating sensor
Sensor damaged
Wiring disconnected
Cure
Only with Parameter P26=1, Stand alone
The sensor fault, understood as a short circuit or open circuit, causes deactivation of the
Solar Pump and shutter closing. The protection is immediately deactivated on eliminating the
fault.
To signal this fault, the symbol S3 will be deactivated, whereas the Fault symbol and the
backlight will start flashing.
The sensor fault, understood as a short circuit or open circuit, causes deactivation of the
Solar Pump . The protection is immediately deactivated on eliminating the fault.
To signal this fault, the symbol S4 will be deactivated, whereas the Fault symbol and the
backlight will start flashing.
Only with Parameter P26=0, Communicating
The fault, understood as no communication with the boiler card for 60 consecutive seconds,
causes deactivation of the Solar Pump and shutter closing. The protection is immediately
deactivated on eliminating the fault.
Only with Parameter P25<>0, Operation without flowmeter
This fault is activated when, with the Solar Pump activated, the card does not detect flow in
the solar circuit for 10 consecutive minutes. The fault causes deactivation of the Solar Pump.
After checking and eliminating the fault , the protection can be removed, activating and deac-
tivating the OFF mode.
cod. -- - 11/2010 (Rev. 00)
ECONCEPT SOLAR ST
Cure
Check the system
Check the safety valve
Check the expansion tank
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Check the wiring or replace the sensor
Reconnect the external probe or disable the sliding
temperature
Check the system
Check the safety valve
Check the expansion tank
Replace the sensor
Check the wiring
Cure
With circuit / contact open
With circuit / contact open
With circuit / contact open
With circuit / contact open
(Only with Remote Control connected)
(Only with Remote Control connected)
(Only with Remote Control connected)
EN