F35
Central Heating
Inlet
Temperature
Sensor Error
This error is received if the
central heating inlet
temperature sensor is short-
circuit, open-circuit, or
damaged. Domestic water and
central heating request is
stopped. When this error is
deleted, normal operation
begins.
ERROR
1- Make sure that the cables of the NTC in the supply
line are connected.
2- If the cables are plugged in, check the cables end-
to-end. Make sure the cables are undamaged and
plugged into the mainboard terminal. If there is a
damaged wire, replace the low voltage cable group.
3- If the cables are not damaged, measure the
resistance between the terminals of the NTC and
check that their values are appropriate.
4-
If the resistance value between the NTC terminals
is according to the table, replace the return and supply
water NTCs. If the error code does not change,
replace the mainboard. If the error code becomes F35,
replace the return water NTC.
F37
Low Water
Pressure
FP11 water pressure parameter
is at a low level. This error is
received if the water pressure is
less than FP11/10 bar.
The error is automatically
deleted when the water
pressure is more than
(FP11/10+0.4 bar).
ERROR
1- Fill the pipeline with water by opening the filling
tap.
2- If the pressure does not increase above 0.8 bar
and the error does not disappear after the filling tap is
opened, make sure that the valve is functioning
mechanically. If the tap is faulty, replace it.
3- If the filling tap is also intact, make sure that the
water pressure in the plumbing is sufficient.
4- If the plumbing pressure is also suitable, make
sure that the cabling of the pressure sensor is
undamaged and plugged in. If the cabling is suitable,
replace the pressure sensor.
5- If the problem is not solved by replacing the
sensor, replace the mainboard.
F39
Outdoor
Temperature
Sensor Error
This error is received if the
outdoor temperature sensor is
short-circuit, open-circuit, or
damaged. Domestic water and
central heating request is
stopped. When this error is
deleted, normal operation
begins.
ERROR
1- Reset the error.
2- If the error does not disappear after reset, make
sure that the outdoor sensor cables are connected.
3- If the cables are undamaged and connected
properly, replace the outdoor sensor.
4- If the error persists after replacing the sensor,
replace the mainboard.
F40
High Water
Pressure
FP12 water pressure parameter
is at a high level. This error is
received if the water pressure is
more than 3.3± 0.3 bar.
The error is automatically
deleted when the water
pressure is less than 3.3±0.3
bar.
ERROR
1- Check if the error disappears by draining the water
from the heating installation.
2-
If the pressure does not drop below 3.3 ± 0.3 bar
after draining the water and the error does not
disappear, check the cabling of the pressure sensor.
4-
If the cabling of the pressure sensor, replace the
pressure .
5-
If the problem persists after replacing the pressure
sensor, replace the mainboard.
F47
Water Pressure
Sensor Error
This error is received if the
pressure sensor is short-circuit,
open-circuit, or damaged.
When this error is deleted,
normal operation begins.
ERROR
1- Check the cabling of the pressure sensor. If all
cables are connected and undamaged, replace the
pressure sensor.
2-
If the error persists after replacing the pressure
sensor, replace the mainboard.
F50
Solar Energy
Boiler Tank
Temperature
Sensor Error
This error is received if the solar
energy boiler tank temperature
sensor is short-circuit, open-
circuit, or damaged. Domestic
water and central heating
request is stopped. When this
error is deleted, normal
operation begins.
ERROR
1- Reset the error.
2- If the error persists after reset and you are not
using boiler or solar energy tank, make sure P00
parameter is not 2, 3 or 4. If you are using boiler or
solar energy tank, make sure the cabling of the
temperature sensor is undamaged and assembled.
3- If the cables are undamaged and connected
properly, replace the sensor.
4- If the error persists after replacing the sensor,
replace the mainboard.
F51
Solar Panel
Temperature
Sensor (PT1000)
Error
This error is received if the
solar panel temperature sensor
(PT1000) is short-circuit, open-
circuit, or damaged. Domestic
water and central heating
request is stopped. When this
error is deleted, normal
operation begins.
ERROR
1-
Reset the error.
2-
If the error persists after reset and you are not
using solar energy panel, make sure P00 parameter is
not 2, 3 or 4. If you are using solar energy panel, make
sure the cabling of the temperature sensor is
undamaged and assembled.
3-
If the cables are undamaged and connected
properly, replace the sensor.
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