Subject
Description
Function of Part
It prevents dry combustion in the device by measuring the
water pressure in the installation.
Impact in Case of Malfunction
1- Device gives low or high pressure error.
2- A value different from the actual water pressure is
displayed on the user screen.
3- Even if the user fills the installation with water, they may
not see the pressure rise.
Main Associated Error Codes
F37, F40, F47
Diagnostics and Test Method
1- Checking that the cable connections are solid and
undamaged
2- Checking whether the water inlet hole of the water
pressure sensor is clogged
3- Voltage test
Maintenance Requirement
There is no special maintenance requirement.
Test definition
Test Method
Water Pressure Sensor
When the device is powered on, the electrical connector on
the water pressure sensor is removed and DC voltage
between the "IN"-"GND" terminals shown below is measured.
It is checked that the voltage is in the range of 4.9-5.1.
4.18. Water Pressure Sensor
IN
OUT
GND
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