Display
Description of the er
ror
Probable causes
Check/Solution
40
40:Return sensor 1
NTC return sensor
The return sensor is not correctly
connected
Check that the return sensor has
been correctly connected to the
boiler PCB
The return sensor does not work
Use a suitable multimeter to check
the resistance (Ω) of the sensor ac
cording to the water temperature
using the "Resistance/Tempera
ture" correspondence table (10 K
sensor)
46
46:Return sensor
cascade
Cascade return tem
perature sensor error
The return sensor is not correctly
connected
Check that the return sensor has
been correctly connected to the
boiler PCB
The return sensor does not work
Use a suitable multimeter to check
the resistance (Ω) of the sensor ac
cording to the water temperature
using the "Resistance/Tempera
ture" correspondence table (10 K
sensor)
50
50:HW sensor 1
DHW sensor
The sensor is not correctly connec
ted to the boiler sensor terminal
block
Check that the sensor has been
correctly connected to the boiler
sensor terminal block
The DHW temperature sensor does
not work
Use a suitable multimeter to check
the resistance (Ω) of the sensor ac
cording to the room temperature
using the "Resistance/Tempera
ture" correspondence table (10 K
sensor)
52
52:HW sensor 2
Solar DHW sensor (if
incorporating a solar
installation)
The sensor is not correctly connec
ted to the boiler sensor terminal
block
Check that the sensor has been
correctly connected to the boiler
sensor terminal block.
The return temperature sensor does
not work
Use a suitable multimeter to check
the resistance (Ω) of the sensor ac
cording to the room temperature
using the "Resistance/Tempera
ture" correspondence table
(PT 1000 sensor)
60
60:Room sensor 1
Room temperature
sensor 1 error
The sensor is not correctly connec
ted to the boiler sensor terminal
block
Check that the room sensor has
been correctly connected to the
boiler sensor terminal block
65
65:Room sensor 2
Room temperature
sensor 2 error
The sensor is not correctly connec
ted to the boiler sensor terminal
block
Check that the room sensor has
been correctly connected to the
boiler sensor terminal block
68
68:Room sensor 3
Room temperature
sensor 3 error
The sensor is not correctly connec
ted to the boiler sensor terminal
block
Check that the room sensor has
been correctly connected to the
boiler sensor terminal block
78
78:Water pressure
sensor
Hydraulic pressure
sensor error
The hydraulic pressure sensor is
not connected to the PCB
Check that the connectors between
the sensor and the PCB are cor
rectly connected
The hydraulic pressure sensor does
not work
Replace the hydraulic pressure
sensor. Please note that this action
requires the boiler to be drained
73
73:Collector sensor 1
Solar collector sensor
(if incorporating a so
lar installation)
The sensor is not correctly connec
ted to the boiler sensor terminal
block
Check that the sensor has been
correctly connected to the boiler
sensor terminal block
The solar collector sensor does not
work
Use a suitable multimeter to check
the resistance (Ω) of the sensor ac
cording to the room temperature
using the "Resistance/Tempera
ture" correspondence table
(PT 1000 sensor)
12 Troubleshooting
7702703 - v04 - 05092019
IX
111
Содержание IX 145-110
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