The autonomous gas heating system from the Korean manufacturer Navien is quite in demand among consumers, it is installed both in country houses and in apartments.
Navien units gained their popularity due to their good technical characteristics, ease of use and installation. Like all household appliances, the Navien gas heating system also has its own faults.
Of course, the manufacturer gives a guarantee for his device and claims that the probability of breakdowns is practically zero, given the high quality of the equipment. But if this happens, then with a competent and timely approach, they can be quickly eliminated.
Design features
Boiler device
To attract the attention of buyers, the Korean manufacturer has developed a perfect design of the gas unit, minimized the number of breakdowns and released its product at a relatively low price. One of the advantages of a gas unit is an understandable and detailed instruction manual, which greatly simplifies the setting of the selected mode.
The company adheres to the same principles in the installation of the electronic control system, in the regulation of other parameters.
The versatility of a gas boiler can be judged by its working abilities:
- Adjustment circuit with microprocessor chip allows you to both protect and smooth out voltage surges in the power supply network. In the event of changes in the current parameters, the electronic system is able to maintain a mode for the full functioning of all components of the unit, which has a positive effect on the operational life of the device. And also the adjustment scheme allows you to avoid possible malfunctions when the sensors are falsely turned on. This feature of the electronic system is of particular importance for the operation of the equipment, given the instability of the voltage in the power grid and its deviations in a wide range.
- The design of the gas boiler is designed with a possible fall water pressure indicator up to 0.1 bar. This makes it possible to minimize blocking actions and breakdowns of the device, which is ideal for its installation on the upper floors of a building.
- The Navien boiler is able to neutralize possible malfunctionscaused by a decrease in the supply pressure to 4 mbar, which is critical for the normal functioning of many modern systems equipped with electronic controls.
- Due to the design features of the Navien gas appliance, the heating system will not freeze even when the gas supply is cut off. In order to prevent the activation of the emergency mode when the temperature of the coolant drops below 5 degrees, as well as the impossibility of igniting the burner, a built-in pump was provided for forced and continuous circulation of water.
- There is a double heat exchanger for separate heating of hot water and heat carrier, which is very convenient (you can optionally adjust the preheating of water). The easy-to-use electronics allow you to precisely set the correct mode.
Types of boilers
On the market you can find goods from Navien in a fairly wide range, where the following models are especially popular:
Wall-mounted equipment made in two variations
The devices are normally able to function even with an unstable supply of electricity and gas. The units are equipped with a turbocharger and an anti-freeze protection system.
Floor standing units
Ideal for installation in private homes. They provide the room with hot water and heat.Advantages: compactness, simplicity of design, ease of use. The power indicator can vary from 11 to 34 kW.
Condensing products
High power rating and economical energy consumption. The boiler passport of this type indicates the efficiency level of 108%. The main advantage: the unit can significantly reduce the cost of heating the room.
Frequent malfunctions
Gas boilers Navien, although they are distinguished by high quality components, correct assembly, can fail. Each breakdown has its own code, which is displayed on the device display.
Common problems include:
- An increase in temperature, leading to overheating of the equipment (01E).
- Insufficient level of coolant in the system, and also the circuit of the flow measuring device (02E) is damaged.
- Flame signal missing (03E).
- Invalid warning about the presence of fire or short circuit of the sensor circuit (04E).
- Open circuit in the heating water temperature meter (05E).
- Short circuit of a circuit in the temperature sensor (06E).
- Damaged circuit in the hot water temperature sensor (07E).
- Violation of a circuit in the hot water temperature sensor (08E).
- Fan faults (09E).
- Difficulty eliminating smoke (10E).
- In the process of work, the fire (12E) went out.
- A short circuit has occurred in the heating flow meter (13E).
- No gas supply (14E).
- There is a problem with the control board (15E).
- Unit (16E) overheated.
- DIP switch (17E) has failed.
- Overheating of the fume extraction meter (18E).
- There is a problem with the air pressure sensor (27E).
- The presence of noise and buzzing without displaying an error on the displays, which happens when the passage of water is obstructed by scale in the pipes, when overheating or boiling.
- There is no hot water supply, indicating a problem with the 3-way valve (it needs to be replaced).
Decoding the error
Fault code 13 is indicated in the instructions for the Navien Ace series boilers. Minimum information: the reason is in the flow sensor of the heating circuit. Error 13 is generated in the electronic board when there is no signal from it about the normal circulation of the coolant. Knowing this, it is easy to decide on further actions.
Where to begin
Restart the Navien boiler with the power switch on the remote control. Korean heating technology is famous for its resistance to voltage instability, but with strong deviations of its value from the nominal, a false error may appear.
Remote control panel for gas boiler Navien Deluxe
If this does not work to eliminate the 13th fault code, the reason is in the Navien boiler.
Causes of malfunctions and their elimination
To understand how to fix a particular malfunction in a gas unit, you need to know the causes of malfunctions:
- Code 01E indicates an increase in the temperature regime in the device. This is possible due to a blockage in the ducts, which provoked their narrowing, or there were problems with the circulation pump.
- Code 02E indicates the presence of air, insufficient water, damage to the impeller in the circulation pump, closed control valve, or the flow sensor has become unusable.
- Code 03E lights up as a result of problems with the ionization sensor, lack of gas supply, ignition, with the tap closed, with improper grounding of the boiler.
- Code 05E indicates poor contact between the temperature sensor and the controller, or the presence of a short circuit in the same area.
- Code 10E is displayed on the screen in case of fan failure, as well as in case of improper connection of the sensor tubes directly to the fan. In addition, a clogged chimney, a strong gust of wind can also cause device malfunctions.
- Code 11E, as a rule, is displayed on European-made boilers (with appropriate sensors).
- Code 13E indicates a short circuit in the heating water flow meter.
- Noise generation and hum is possible with a poor coolant.
- The reason for the lack of hot water is the valvewhich has fallen into disrepair. Optimum valve life is 4 years.
How to fix:
- Error 01E: carefully inspect the impeller in the circulation pump to detect various malfunctions; check the resistance in the pump coil itself; examine the heating system for the presence of air (excessive venting).
- Error 02E: deflate; check the pressure, resistance in the coil; whether a closure has occurred; open the valve (control valve); check the resistance in the flow meter; remove the sensor housing and clean the flag.
- Error 03E: clean the flame sensor from debris (you can use fine-grained emery paper to get rid of gray deposits on the electrode).
- Error 05E: examine the circuit from the controller to the sensor. If there is a problem, the sensor should be replaced with a new one. The meter and controller connectors must first be disconnected and then reconnected.
- Error 10E: repair the fan or replace it; check the connections on the pipes of the measuring device; clean the chimney from all kinds of debris.
- Error 13E: replace the sensor.
You can get rid of noise and hum if you disassemble the product and clean the heat exchanger. If the problem persists, then the part must be replaced. Inspect the taps, they should be open as much as possible. Reduce water temperature.
Major error codes
a2
Error a2 indicates that the thrust is not strong enough. This can be caused by a broken fan, a clogged chimney, or a malfunctioning air pressure sensor. It is necessary to check the operation of the fan, inspect and, if necessary, clean the chimney.
a3
Error a3 means that the pressure sensor worked before the circulation pump was turned on. The sensor should be carefully inspected and cleaned.
a4
Error a4 is displayed when the temperature sensors BOuTem or WarmTem overheat. The reason may be the stoppage of the circulation of the coolant or its absence. It is necessary to open the tap for parsing warm water to lower the temperature. Check the condition of the heating pipes and valves.
temperature sensor
a5
Error a5 means that the coolant pressure is too low. This can be caused by too little liquid in the heating system, air entering the heating circuit or a breakdown of the circulation pump. It is necessary to inspect the coolant distribution system, perhaps water is dripping from the tube somewhere and check the correct operation of the pressure sensor.
a6
Error a6 is displayed when an ignition error occurs. In this case, the ionization sensor does not work due to the lack of flame. Check the gas supply to the boiler, the operation of the gas valve and the ignition transformer.
a7
Error a7 indicates a malfunction of the gas valve. It is triggered when the relay is closed. It can also appear in case of a breakdown of the control unit.
a9
Error a9 outputs the Freeze signal. The reason for the occurrence is the cooling of water in the system to five degrees.
aa
Error aa means that the water temperature in the system is approaching 100 degrees. This happens when the heating circuits are closed, the filter is clogged, the pump is faulty, or the three-way valve is damaged.
Three-way valve for boilers Arderia
Recommendations for operation and repair
- So that the equipment works for a long time and efficiently You can install a voltage stabilizer, filters (gas and water), a magnetic or polyphosphate water converter, etc.
- The gas boiler must be installed strictly in accordance with the requirementsspecified in the passport.
- To eliminate the causes of malfunctions you need to carefully study the instructions and act according to it.
Gas boilers from the Navien company are the perfect combination of price and quality.
Error 10
Error 10 of the Navien boiler indicates a malfunction in the smoke exhaust system. Perhaps the matter is in a clogged chimney, bending of pipes from the air pressure sensor or their incorrect connection. Another possible reason for this error is strong gusts of wind.
How to resolve error 10
1. Check, repair or replace the fan. 2. Check and clean the chimney if necessary. 3. Check how the tubes from the air sensor are connected. Eliminate the presence of kink.
