Measures In Case Of Failure - Opop H4 EKO-D Series User Instructions

H4EKO-D
Source of risk
Combustion chamber
The boiler must not be exposed to higher operating pressure than prescribed
It's forbidden to overheat the boiler
The boiler must be protected against low-temperature corrosion by appropriate connection with automatic return temperature valve
Only the prescribed fuel can be burned in the boiler
It's forbidden to store combustibles near the boiler
Particulate matter is emitted when handling the fuel. Therefore, the operator should use appropriate protective equipment according to
the degree of dustiness
Since this is a fuel, the relevant fire regulations must be followed and a suitable fire extinguisher must be available
The boiler must be in a horizontal position in the boiler room
All doors, lids and cover must be properly closed during boiler operation

21. MEASURES IN CASE OF FAILURE

Alarm message
Damaged flue gas sensor
Damaged buffer tank sensor
Damaged CH sensor
Damaged DHW sensor
Damaged MOSFET sensor 1
MOSFET temperature too high
Damaged equithermal valve sensor
Damaged outdoor sensor of built-in valve
Damaged valve return sensor
Effects of risk
Burns, inhalation of dust, eye contact with
dust
Thermal risks
Risks associated with fuel handling
Ergonomic risks
Description
Automatic igniting is not possible because the transition between igniting
and operation is based on the flue gas temperature. You can ignite the
boiler manually in Manual mode. Check for an adequate connection of
the flue gas sensor or, if the connection is OK, replace the sensor.
The buffer tank sensor is a KTY type. Check the buffer tank sensor
connection. Be careful when extending the sensor cable. The standard
resistance at room temperature is 2 kΩ. If you extend the sensor too
much, the resistance characteristic changes and an alarm message occurs.
Replace the sensor if the connection and resistance characteristics are OK.
The boiler output water sensor is a KTY type. Check its connection.
Replace the sensor with a new one if the connection is OK.
The DHW sensor is a KTY type. Check the DHW sensor connection. Be
careful when extending the sensor cable. The standard resistance at room
temperature is 2 kΩ. If you extend the sensor too much, the resistance
characteristic changes and an alarm message occurs. Replace the sensor
if the connection and resistance characteristics are OK.
The MOSFET transistor is the component responsible for changing the
speed of the exhaust fan. The standard temperature on this component
does not exceed 50°C. If the temperature is too high, there will be an
alarm message. Check the exhaust fan's operation, remove it, clean it and
try again. If the problem persists, call the OPOP service.
If you connect an outdoor temperature sensor, it is possible to control the
mixing valve equithermally. To adjust the set temperature on the valve
according to the outside temperature. Before activating this function,
make sure that the outdoor sensor is properly connected. Otherwise, an
alarm message will occur. If the sensor cable is too long it can cause a
change in resistance characteristics and an alarm message can occur.
The return sensor is a KTY type. Check the return sensor connection. Be
careful when extending the sensor cable. The standard resistance at room
temperature is 2 kΩ. If you extend the sensor too much, the resistance
23
Instructions
Hazard elimination
If the boiler is not shut down for a long
time, its parts may be still hot, so use
protective gloves. When cleaning the
combustion chamber, use goggles and a
respirator. The recommended downtime is
4 hours.