DIY geyser repair neva luxury 4513

Replacement of the membrane of the water unit of the gas column Neva 4510, Neva 4511, Neva 4513, Neva 4011

AND So! Let's start with the simplest. (The topic is relevant for all gas water heaters).

The weakest point in any gas column is the membrane. Why? Because in 99% of cases the following happens.

You turned on the tap, but the column does not start. The first and most likely reason is that the membrane has burst.
You turned on the tap, and the column does not give the flame at full power. The flame is "small" and the water heats up poorly. This is because insufficient gas is being supplied to the burner. The diaphragm does not push the stem with the force required to open it completely. The first and most likely reason is t thickness in membrane .
You turned on the tap, and the column is unstable. It often turns off or only turns on from the third or fifth time. The first and most likely reason is Rmembrane stretched from time to time .

Therefore, before raising a panic, you should always start by replacing the membrane. In general, we recommend simply changing the membrane every two years, without waiting for the above troubles. What's the matter?

The membrane is the most basic element during normal column start-up. Why? When the tap is opened, the water flow creates a vacuum behind the membrane, the membrane bends. That, in turn, shifts the stem, which opens the gas supply to the burner, and all this works purely mechanically, which means it is subject to wear.

The price of the issue. The cost of a membrane for any gas water heater is from 200 rubles. up to RUB 500 We buy a membrane. When we have a brand new membrane in our hands, to replace it we need: a pair of screwdrivers, 8 mm and 24 mm open-end adjustable wrenches, a glass (only for professional plumbers) and 30 minutes of time.

In order for your eyes not to run, first look directly at the photo of the NEVA 4511 column with a water-gas unit installed inside. Screws and nuts are marked with red dots, which must be unscrewed to separate the water part and then work with it. When the eyes are more or less accustomed, we move on to the first point.

1. Before us is a water-gas unit used in gas water heaters NEVA 4510, NEVA 4511, NEVA 4513. Between themselves, these units have a tiny difference, but this will not interfere with the matter. First, a couple of points to understand what it is. It consists of two halves: a gas unit (this part is gray) and a water unit (this part is yellow). We take a “plus” (Phillips) screwdriver and separate the gray part from the yellow one.

2. The third photo shows how they are fastened together: with the help of two screws, simply squeezing from the ends this “grease cylinder” of the water unit. Let's consider the water part. Photo 4. Here, where the grease is, do you see a hole on the end of the cylinder? It is from this hole that the stem comes out, which opens up gas access to the column. It is it (the stem) that our membrane pushes when opening the tap.

3. To get to the membrane, carefully unscrew all six screws and the water assembly will open in half, like an oyster.

4. If you carefully examine both the resulting halves, it is easy to guess that the membrane is this black elastic band lying in the right half. The membrane, as you can see, has an eyelet that fixes its position. Carefully remove the membrane from its containing halves.

5. And what are these parts inside? One of them is a plate with a stem, the second is a spring. Our membrane presses on this plate with the stem. The spring, on the other hand, returns the stem to its previous position when the valve is closed, gas access is stopped and the column is turned off. If everything inside our oyster is dirty, take out the plate, take out the spring.

6. Everything inside this yellow saucer is thoroughly cleaned and washed. We replace the membrane with a new one.Do not forget about the membrane eyelet, which fixes the position correctly. Don't forget about the sides of the membrane. She should, as it were, hug the plate with the stock with her recess. Then everything will work correctly.

Now we scroll everything in the opposite direction (both pictures and screws). We open the tap. And finally, we wash. Section Membranes.

Warning. This section is intended for specialists who have the appropriate permission to repair gas equipment! If you repair yourself during the warranty period, the warranty is void!

This article will focus on malfunctions of Neva speakers (models 4510, 4511, 4513, 4510M, 4513M, 4610, 5611). Many Chinese speakers, such as Vecktor or Oasis, and not only Chinese ones, work on the same principle as the Neva, so the remedies below apply to them as well. But, please be more careful, the photographs in the article show details for the Neva columns.

No spark when hot water is opened.

When the hot water tap is opened, there is a spark discharge, but the column does not ignite.

1. Check if the hot water tap in front of the column is open.
2. There is no gas in the main gas pipeline. You need to call the service to fix the problem.
3. Check the serviceability of the EMC. Connection contacts may be broken.
4. Correct the spark plug, it is possible that the discharge does not reach the flow of the gas-air mixture (about 5 mm from the end of the plug to the burner).
5. When using a column from liquefied gas, it is necessary to check the gas supply in the container (cylinder).
6. Weak spark from spark plug electrode. It is required to clean the contacts of the battery compartment or to completely replace the ignition elements (batteries).

The column will run for a while and turn off.

1. Poor cravings. Thrust sensor triggering. It is necessary to clean the chimney or check the tightness of the exhaust pipe connection on the column pipe.
2. Overheating of water (outlet water temperature is more than 90C, triggering of the limit temperature sensor). It is necessary to use the column control knobs to reduce the gas consumption and increase the water pressure.
3. Replace the membrane of the water unit.
4. There is no signal from the ionization sensor (flame sensor). In this case, the burner works for no more than 7 seconds, and spark discharges from the spark plug do not stop. It is necessary to restore contact with the sensor, correct its position (if it touches other elements of the burner) or replace it.

The water temperature reading is not shown on the column display.

1. Defective water temperature sensor. It needs to be replaced.
2. Check the connection contacts of the display itself to the ignition unit. If there is no result, replace the display.

The water does not heat up well.

1. Reduce water pressure.
2. It is required to check the heat exchanger for the presence of scale on its walls. If necessary, remove it, rinse with Solita. It is also necessary to clean the column burner from dust and soot on its surfaces.
3. Insufficient gas pressure in the line - call the service to eliminate the causes.
4. Repair or replacement of the water unit is required.

The flame of the burner of the column is yellow and weak, with smoky tongues.

1. It is necessary to clean the column burner from dust and soot on its nozzles and internal surfaces.

Excessive noise of water during the operation of the column.

1. It is necessary to reduce the water pressure with the column adjustment knob.
2. Extrudes gaskets at the joints of the water pipes. Replacement of gaskets is required.

The burner continues to operate even when the hot water tap is closed.

1. The stem of the gas unit is seized (it is very difficult to move the stem manually). It will be easier and safer to replace this unit.
2. It is required to replace the membrane of the water unit.

These were the most common malfunctions of the Neva speakers. We hope this article helped you troubleshoot your water heater.

the wick burns very strong during the night heats up the pipes with water when the water is opened after a few seconds there is boiling water for the daughter-in-law of the children sprinkles when they wash their hands the plastic tubes of the teapot how to reduce the wick

Hello, tell me the model of the column.

remove the front cover and on the gearbox you will see a yellow bronze screw for a screwdriver. twist it smoothly while the wick is working.

WHY WHEN THE WATER REGULATOR IS ADDED IT GOES OUT

Nikolay, to open the gas valve, you need a certain water pressure in the water valve. As the flow of water increases, you decrease this pressure and the gas valve closes.

The situation is as follows: when the hot water tap is opened, the flame does not light up for 4 seconds, and then a strong pop. The flame ionisation sensor is not working. Previously, after three seconds there was no flame, the gas supply to the burner stopped. This rarely happens. Neva 4501

Hello Dmitry. The ionization sensor has nothing to do with it. There are several probable reasons:
1. Check batteries (replace if necessary)
2. Check the ignition plug, its position relative to the burner (5mm gap)
3. Poor traction is possible (gases accumulate and therefore cotton occurs)
4. Clean the burner itself from soot
5. Unlikely, but still, the control unit itself requires replacement.

Hello. Column Neva. There is a slight leak in the area of ​​the microswitch. What do you recommend to do?

Since the Neva 4511 series geyser is one of the most common models, the topic of its maintenance and repair is of interest to many users who are accustomed to doing such work with their own hands. Indeed, these open-chamber instantaneous water heaters can often be brought back to life without the need for service personnel. Let's look at what malfunctions occur during the operation of these units, as well as ways to eliminate them.

It is impossible to independently repair a household appliance without knowing how it functions and what it consists of. Unlike old-style water heating devices, this series of gas water heaters is equipped with a controller and electric ignition, which made it possible to remove a constantly burning igniter. The rest of the design remained fairly simple and maintainable. It consists of the following basic elements:

1. Housing with hinges for wall mounting.
2. The diffuser is a collection of combustion products with a chimney pipe.
3. Copper heat exchanger.
4. Gas burner device.
5. Water node.
6. Membrane actuator (so-called frog).
7. A gas valve with an electromagnet, connected by a common stem to a water unit.
8. Controller.
9. Microswitch for power supply to the electronic unit.
10. Water supply pipes.
11. Ignition electrode.
12. Flame detector (ionization).
13. Additional electrode for ignition of the burner.
14. The valve is a flow regulator.
15. Adjustment of the intensity of combustion and heating temperature.
16. Connection of a draft sensor installed inside the diffuser.
17. Compartment for batteries (batteries).

The diagram above shows the device of the Neva gas column with numerical designations of parts corresponding to the list.

Automatic switching on and heating is controlled by the water unit together with the controller, and the solenoid valve connected to the draft sensor is responsible for the safe gas supply. The algorithm for the operation of a water heater looks like this:

1. After opening the hot water tap at the inlet of the "frog", pressure arises, which acts on the rubber membrane of the assembly. It moves the stem that opens the gas valve and closes the microswitch contacts.
2. When the electrical circuit is closed, battery power is supplied to the controller. He gives 2 commands at the same time: open the solenoid valve for gas passage and create a spark on the ignition electrodes. As a result, the burner ignites.
3. The flame sensor detects the appearance of fire and transmits a pulse to the electronic unit, which interrupts the sparking. The heater switches to operating mode.
4. When the valve on the mixer is closed, the pressure in the network disappears and the spring throws the frog diaphragm back, at the same time closing the mechanical gas valve.The limit switch is triggered and the controller loses power, and with it - the electromagnet. The fuel supply is interrupted and the burner is extinguished.

The fundamental point. The solenoid valve is connected in one circuit with the draft sensor (pos. 16 of the diagram). If, for various reasons, the draft in the chimney disappears or weakens, the sensor will heat up and open the circuit, de-energizing the electromagnet. The latter will return to the closed position and cut off the gas supply to the burner.

To exclude possible overheating of the water in the heat exchanger, the manufacturer has implemented a simple technical solution: a temperature sensor connected to the controller is built into the pipeline. If the flow heats up to a critical level (about 90 ° C), then the gas supply will automatically stop and the burner will go out. The structure and principle of operation of the Neva 4511 column is shown more clearly in the video:

In order to fix the malfunction of the Neva gas column with your own hands, you need to diagnose it correctly. Over the years of operation of the water heating apparatus, one part of the parts wears out and requires replacement, the other - periodic maintenance. In this case, a variety of problems arise, characterized by certain symptoms. We propose to divide all emerging problems into groups according to the following criteria:

• the burner does not light up when opening the tap of the DHW system;
• after working for 5-10 seconds, the unit shuts down;
• the flow heater starts up and functions properly, but does not heat the water well;
• other problems.

Advice. Most often, the rubber membrane of the water unit fails in gas water heaters - it stretches, cracks or breaks. This is a consumable part that should always be kept in stock. A sample of the part is shown in the photo.

When the water heater does not react in any way to the inclusion of hot water, you need to perform the simplest action - check the condition of the batteries and the contacts of the battery compartment (they can oxidize). Clean them with sandpaper, install a new set of batteries, and then try firing up again.

An important point. The luminous display of a household appliance does not at all indicate a full charge of the batteries, since it does not consume much energy. If the batteries are "hung up", then the voltage for triggering the electromagnet and sparking may not be enough. According to the specifications published on the official website of the manufacturer, the set of elements is enough for about 250 hours of operation.

Battery compartment location - bottom view of the device

Is the power supply ok? Then continue diagnosing the gas water heater using this algorithm:

1. Make sure that there is enough pressure in the piping to turn on the device. It is possible that someone accidentally closed the shut-off valve or control valve on the heater itself (on the right).
2. If there is a strainer on the incoming water supply, check its condition and clean if necessary.
3. Remove the front panel of the device and open the DHW tap, observing the stem. If it does not move under normal water pressure, the reason lies in the frog's membrane.
4. The stem has moved, released the switch button, but nothing happens? There is a problem with the electrical circuits. You need to check the microswitch and ring the other wires supplying the controller and solenoid valve.

Advice. When repairing the Neva gas water heater, accompanied by disassembling the unit, just in case, shut off the gas main.

To dismantle the front casing, it is necessary to remove the plastic handles from the control valves and disconnect the display connection connector. At the back, the panel is supported by 2 self-tapping screws located at the bottom of the device. Unscrew them and remove the cover by pulling it towards you and pulling it up.

To check the limit switch, you must disconnect the connector and ring it with a multimeter or lamp tester. When the button is pressed, the circuit must be open. As for the wiring, it rarely fails, unless you catch your eye on a fallen off wire, which is easily removed.

To replace the membrane in the Neva 4511 column, remove and disassemble the water unit together with the gas one, following the instructions:

1. Close the cold water and gas supply, unscrew both supply pipes with an open-end wrench.Also disconnect the copper pipe leading to the heat exchanger.
2. Disconnect the controller and microswitch connectors.
3. The entire water / gas block is fixed with 2 screws to the burner flange. Unscrew them with a Phillips screwdriver and remove the assembly.
4. Disassemble the frog and replace the membrane, and with it the small O-ring shown in the photo.

Note. The replacement can be done without dismantling the whole block, but it is extremely inconvenient to perform the operation in this position. The described disassembly technology is also suitable for other models of gas water heaters - Neva Lux 4510, 5611 and so on.

How the membrane of an instantaneous water heater changes, see the next video: