E02
False Flame Signal
This occurs when
flame is detected in
the burner while the
gas valve is on.
1- Press the reset button. Check if the error continues.
2- If the error continues, replace the mainboard.
E03
High Temperature
Warning
This occurs when the
supply or return
temperature exceeds
90°C.
1. Ensure that the boiler’s water valves are on. If not, turn on the valves and reset the device.
2. If the boiler gives this error in the winter mode, ensure that the valves of at least one radiator are on. If not,
turn on the valves of at least one radiator and reset the device.
3. Ensure that the resistance of the water temperature sensors is correct.
Sensors may be malfunctioning. If they do not give the correct resistance values, replace them and reset the
device.
4. Internal bypass may not be functional. After replacing the 3-way valve set and resetting the device, make
sure the error is removed.
5. The pump connection cables may be loose or displaced or lost their conductivity. Check the connections. If
there is a problem, replace the cables and reset the device.
6. There may be congestion in the installation. Observe the temperature changes in both the summer and
winter mode while the boiler is running. If there is blockage, clean the system.
7. Ensure that the circulation pump is working. If the pump is defective, replace it.
8. If the problem persists, the mainboard may be defective. Replace the mainboard.
E15
Temperature Sensors
Measurement
Deviation Error
Temperature sensors
may be defective.
1- Check if the sensors are connected correctly and if they are defective. If they are defective, replace the
CH supply and return sensors.
2- If the error continues, replace the mainboard.
E16
Supply Water
Temperature Sensor
Error
No temperature change is
detected by the supply
water temperature
sensor.
1- Check if the sensor is connected correctly and if it is defective. If it is defective, replace the CH supply
sensor.
2- If the error continues, replace the mainboard.
E17
Return Water
Temperature Sensor
Error
No temperature change is
detected by the return
water temperature
sensor.
1- Check if the sensor is connected correctly and if it is defective. If it is defective, replace the CH return
sensor.
2- If the error continues, replace the mainboard.
E18
Temperature Sensor
Error
The temperature
change on the
temperature sensor is
too high (30°C)
1- Ensure that the water temperature sensor cable is working properly. If there is a problem, replace the
CH return sensor cable.
2- If the problem persists, replace the CH supply sensor cable.
E33
Return Water
Temperature Sensor
Error
Return water
temperature sensor
short or open circuit
1- Check the cable connections and ensure the cables are not damaged. If there is a problem, replace the CH
return sensor cable.
2- Check if there is any rusting, corrosion, or deformation inside. Also measure the resistance at the points
where the copper contacts the pipe and ensure that it is in the appropriate range.
3- If there is a problem, replace the CH return sensor cable and reset the device.
4- If the problem persists, replace the CH supply sensor cable as well.
E35
Supply Water
Temperature
Sensor Error
Supply water
temperature sensor
short or open circuit
1- Ensure the cables are connected properly and check for damage. If there is a problem, replace the supply
sensor cables.
2- Check if there is any rusting, corrosion, or deformation inside. Also measure the resistance at the points
where the copper contacts the pipe and ensure that it is in the appropriate range. If there is a problem, replace
the supply sensor cables.
3- If the problem persists, replace the mainboard
E38
Low water pressure
1 week after last
water filling
Water leakage in
installation or boiler
1- Open the front panel of the boiler and check if there is water leakage/water traces inside.
2- Check if there is water dripping from the safety valve. Replace the valve in case of leakage.
3- Check if there is water leakage from boiler-installation pipe connections.
13
Summary of Contents for CONFEO PREMIX P 14 HM
Page 1: ...SERVICE MANUAL CONFEO PREMIX CONDENSING BOILER CONFEO PREMIX P 14 20 24 28 30 35 HM HCH HST...
Page 24: ...12 ELECTRICAL DIAGRAM Figure 15 24...
Page 34: ...Low Voltage Removing installing the pump cable FAN PWM CABLE Figure 39 Figure 40 34...
Page 52: ...Figure 76 Figure 77 52...
Page 83: ......
