Neva geyser malfunctions: do-it-yourself repair

If you are faced with a breakdown of the water heater, do not panic – our article will help. Malfunctions of the Neva geyser can happen for various reasons, but typical ones can be distinguished. We will tell you how to repair the Neva models at home.

Important! If your equipment is under warranty, you should not engage in self-disassembly, otherwise you will lose free service.

Column device

How to understand the location of the water heater nodes? Don’t worry, the diagram will help you. It was created on the basis of the Neva speakers.

External device:

1. Metal casing.
2. control window.
3. Gas flow regulator.
4. Water regulator.
5. Digital indication of temperature.
6. Cold water connection (thread G 1/2).
7. Hot water outlet.
8. Branch pipe for connection to the gas pipeline (cylinder).
9. Branch pipe for removal of products of combustion, is connected to a flue.
10. The basis. Back wall.
11. Holes for installation.

Internal equipment:

• 6, 7, 8 – continued, nozzles as above.
• 12 – water node.
• 13 – water adjustment rod.
• 14 – drain plug.
• 15 – microswitch.
• 16 – control unit.
• 17 – gas unit.
• 18 – fuel adjusting rod.
• 19 – solenoid valve.
• 20 – collector.
• 21 – manifold mounting screws.
• 22 – burner nozzles.
• 23 – spark plug.
• 24 – ionization sensor.
• 25 – copper heat exchanger.
• 26 – output to the water unit.
• 27 – output to the gas unit.
• 28 – mounting bolts.
• 29 — thermal relays.
• 30 — thermometer.
• 31 — gas outlet device.
• 32 – thrust sensor.
• 33 – mounting brackets.
• 34 – battery compartment.

Having understood the design, you can start troubleshooting.

Speaker problems

These problems and their solutions are suitable for all Neva models, including: 4510, 5514, 4511, 4513, 4510M, 4513M, 4610, 5611. We will separately consider error codes and breakdowns on the example of some models.

To get to the internal components of the device, you will need to remove the cover. How to do it yourself:

• Be sure to turn off the water and gas supply.
• Pull the controls towards you and remove.
• Some models have a screw behind the regulator. Unscrew it.
• Disconnect the temperature indicator wiring.
• Unscrew the casing mounting bolts.
• Pull the cover slightly towards you, then up.

You can start repair work.

Breakdowns “Neva Lux” 6011 and 6014

Reasons for occurrence and troubleshooting.

The burner does not ignite. no spark. In this case, the temperature display does not work when the mixer is opened.

• Weak water pressure. If there is little pressure in the tap, you need to wait until the supply is restored. Perhaps the installed model is too powerful for your plumbing. Also check the adjustment toggle switch, set to the maximum value. With frequent problems with pressure, it is recommended to install a circulation pump.
• The batteries have run out. Some users are misled by the scoreboard. If the display is lit, the user thinks the batteries are good. But to light a candle, more current is required. It is important to choose high-quality batteries.

The manufacturer recommends using LR20 (alkaline) batteries. Therefore, salt cells such as R20, which are sometimes used, will not give stable operation. An alternative to LR20 are CR20, but their cost is much higher. To replace, turn the knob in the battery compartment.

Recommendations from the experts: Inspect contacts in the nutrition department more often. The equipment works with water, so the contacts are subject to corrosion and chemical deposits.

• Flow sensor failure. Requires inspection and replacement.
• Deterioration of the rubber membrane. You can understand this by visual inspection. Open the mixer and see how the pusher works. If it does not move, then the membrane is damaged or stretched (marked with a blue arrow in the photo). Red arrows mark places that are prone to leaks.

You can remove the water part together with the gas part. The order of dismantling is marked with letters:

• a – after turning off the fuel supply, the supply hose is unscrewed.
• b – loosen the cold water nut.
• c – the nut of the water block and the radiator pipe are unscrewed.
• g – the solenoid valve wiring is disconnected.
• e – the microswitch loop is turned off.
• e – the bolts of the flange connection are unscrewed.

Breakdown of the electronic board calls for a specialist.

Breakdown on the body of the device. A clicking sound is heard, as if a spark is forming, but ignition does not occur. So, the insulation of the candle is broken. If defects are found during inspection, a serviceable part must be supplied. Also, the cause of the breakdown is a violation of the tight connections of the cable with the control unit. Return the cable to the socket.

Neva Lux error codes

The display allows the user to see the fault code. Self-diagnosis of the column gives a digital value when a malfunction occurs.

E0 — the boiler is turned off. Fuel is not entering the system. Check the gas valve, the supply may have been cut off for a short time.

Error E1 – the control board does not receive a signal from the flame sensor. More than a minute has passed.

What could have happened:

• Air in the gas pipeline. This happens when you first turn on or when the device is turned off for a long time. Open and close the hot water several times until the burner lights up.
• The fuel supply valve is not fully open. Open the faucet.
• Insufficient pressure in the gas line.
• The tank ran out of fuel. The bottle needs to be replaced.
• Violation of the wiring between the water unit and the flame sensor, solenoid valve. Inspect the cable for insulation damage.
• The electrode has moved out of place, does not reach the burner. Return the item to its original location.
• The electrode and flame sensor are covered with soot. You can clean the parts with a brush.
• The contacts between the spark plug and the high voltage wire have come loose.
• Nozzles clogged with soot.

The burner must be removed for cleaning. Disconnect the wiring and unscrew the pipe nut. Unscrew the two manifold bolts, then do the same with the burner mounts. After dismantling, the holes are washed with a brush and soapy water. After rinsing and drying, reassembly is carried out.

E3 code – the solenoid valve worked before the signal from the flow sensor was received.

• The valve is defective. A new element is being installed.
• The electronic unit is broken. Diagnosis is carried out by a specialist.

Error E7 – after 7 ignition attempts, the equipment still does not light up or goes out.

• Open the fuel valve all the way.
• The ionization sensor has shifted or soot has accumulated on its electrode. It should be in the flame zone, near the burner. Cleaning is done with a brush.
• The electric valves are out of order.
• The water or gas block has boiled. Replacing elements.

Error E8 – Thrust sensor activated. Causes:

• The sensor is broken. See if the contacts are tight, change the part.
• The chimney is clogged with debris or soot. If you cannot clear the passage yourself, contact the utilities.

L0 — there is not enough fuel for normal operation. What happened:

• Weak water pressure. Line pressure acts on the diaphragm, which opens the valve. Wait until the supply is restored, adjust the toggle switch or descale the radiator. How to do this is described in the article. about cleaning and repairing the gas column heat exchanger.

• The temperature at the regulator is too low. Increase your scores.
• The pressure in the gas line exceeds the permissible limits. Install the reduction gear.

Such malfunctions are typical for the Neva 3208 and Neva Transit models.

Other issues faced by users

The device works for a while and then turns off.. Draft problems that can occur due to blockages or improper installation of the hood.

Typical user mistakes:

• The ventilation pipe is built too close to the chimney wall, normal draft is not formed.
• Another device or hood is connected to one pipe.
• There is another window at the column ventilation level.

The column does not ignite or immediately goes out. The temperature sensor is triggered.

• Overheating has occurred.
• The item is out of order.
• The membrane has expanded.
• The flame sensor does not work.

Display not working:

• The thermostat has failed. Need a replacement.

• Contacts broken.
• Display defective.

Appliance is very noisy:

• Turn the water regulator. Reduce pressure.

• Gaskets in pipe connections protrude out of place. Replace gasket.

You learned the structure of the Neva water heater, its typical problems. You can start troubleshooting. We hope our article helped you to resume the operation of equipment.