Error codes and malfunctions of the Neva gas boiler

heating equipment Neva – one of the most popular among users. The equipment of this brand is adapted to Russian realities, it works stably at reduced pressure in the line. But this does not mean that the operation is without breakdowns. Errors of the Neva Lux boiler will indicate malfunctions in the system, and their meaning will help restore the operation of the equipment.

Features of the operation of boilers “Neva”

Gas boiler “Neva” is presented in a wall and floor version. Single-circuit devices can heat an area of ​​u180buXNUMXbXNUMX m², they are characterized by low energy consumption. They operate on main and liquefied fuel. Since the combustion chamber is water-cooled, connection to an external thermostat is possible. The organization of the chimney is carried out to the main shaft or to the turbo nozzle.

Double-circuit units are represented by the Neva Lux models. The design includes two heat exchangers for heating and hot water supply (DHW). For example, a bithermic radiator is built into the Neva Lux 7224 model. This is a tube in a tube where water is heated simultaneously for two circuits.

Control of devices mechanical and electronic. Special sensors control the operation of the boiler, in case of malfunctions they send a signal to the control module. Then a fault code is displayed on the display. To find out its meaning, you can look at the instructions.

Error codes for Neva equipment

We list the main malfunctions of the device, as well as indicate options for resolving the problem.

Neva Lux errors

Malfunction codeWhich meansHow to repair
e1/04The heating system is under pressure.
  • Bleed the air from the circuit, increase the pressure.
  • Diagnose the bypass valve. Switch the operation to area heating, close the valve to the system. Water must go through the bypass line, otherwise the part is defective.
  • Flush the pump from blockage, replace if defective.
  • Repair of the pressure sensor circuit. Inspection of connectors, cables.
  • Check the sensor rod for sticking. Turn off the device and remove the sensor and stem. If the diaphragm is damaged, install a good element.
  • The flow sensor has failed. Diagnose and replace.
  • Inspect the three-way valve motor.
exnumxIgnition error.What to do:
  • Unscrew the stop valve until it stops.
  • Replace LPG bottle.

Inspect and replace if broken:

  • Spark plugs and their wiring.
  • Ionization wires. To do this, remove the wire from the candle – the work should be blocked, and 01 should appear on the display. Reconnect the wire, hold the K6 and Restart buttons.
  • Ignition transformer and its circuit.
  • Gas supply regulator.

Also remove the dust from the candle, move it closer to the burner (3 mm). Replace control board

e6/03There were problems with traction.
  • Clean the chimney of debris and soot.
  • Inspect the tubes leading to the pressure switch. If they are clogged, clean them of condensate or install new ones.
  • Diagnose the pressure switch and its wiring.
  • Check the fan and its circuit.
exnumxThe water temperature is above normal.How to proceed:
  • Remove blockage from the heating system.
  • Make sure the thermostat is working, check if it really shows the exact temperature.
  • Open the valve and bleed excess air.
  • Clean the filter from dirt, debris, rust.
  • Check the location of the bypass.
  • The pump does not turn on. Repair.
  • Replace the part that regulates the fuel supply.
  • Correctly connect switch S3 on the electronics module.
01Ignition fails.How to fix the problem:
  • Make sure that the shut-off valves are in good condition, open the gas cock.
  • The spark plug is broken or clogged. Clean the part from dust. If the spark plug or its wiring is faulty, replace it.
  • Adjust the distance between the candle and the burner (3 mm).
  • When the electrode is turned on, a spark hits the combustion chamber. Isolate the breakdown site.
  • Measure the ionization current. Connect the microammeter to the ionization circuit, measure the indicators. Normally, it should be from 3 to 5 microamps.
  • Inspect the ignition transformer circuit. Repair.
  • Remove soot from the combustion unit.
02The equipment does not work due to overheating.
  • The heating circuit is clogged. Clean up.
  • Install the correct thermostat.
  • Bleed air with taps.
  • Clean the heating filter of debris.
  • Bypass valve installed incorrectly. Reconnect the item.
  • The pump that removes excess air is faulty. Run diagnostics.
  • Set the gas regulator.
05The circuit temperature sensor is broken.Check the cable from the sensor to the electronic board. Connect a new element.
06Problems with the hot water temperature sensor.
07The fuel regulator coil has failed.
  • Measure the coil resistance with a multimeter. In operating mode, it should be 80 ohms.
  • The contacts between the coil and the electronic circuit are broken. Check the electrical circuit.
99Electrical problems.
  • Grounding is not organized.
  • Breakdown on the boiler body.
  • Reverse the plug in the socket

Other problems

Not all breakdowns are displayed with error codes. Some can be identified by signs.

The boiler does not turn on.

  • Check the presence of electricity if the boiler is connected to the network.
  • The fuse on the electronic board does not work.
  • Circuit board due to leakage. Inspect all components and parts for leaks.

Appliance pops when ignited.

  • Ignition power or pressure incorrectly set. Adjust settings.
  • Clean the chimney, ensure normal ventilation in the room to maintain draft.
  • Clean the burner block from soot and soot.

If you smell gas in the room, close the shut-off valve. Contact the gas service.

Weak water pressure when opening the mixer.

  • Line pressure dropped. Wait for recovery or install the pump.
  • Remove dirt and scale from the water filter and heat exchanger parts.

The temperature of the coolant exceeds the set.

  • Dilute the hot stream with cold, increase the circulation speed.

The standby mode is activated, the panel does not function, the display shows “-”.

  • The reason is the voltage fluctuations in the network. As soon as it is restored, the equipment will resume work. It is recommended to install a stabilizer.

After reviewing the fault codes, you can proceed to their elimination or contact the service center. Good luck!

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