DIY honeywell vk4105m gas valve repair

Warnings: 1

Posts: 266

Electronik22In which pot is the valve installed?

sa-shaThe valve stands in the mainfour 240f board cs0263c. As for opening it, I don’t want to work on a collective farm yet, because the pot is new.

Warnings: 1

Posts: 266

They are not connected in any way in the valve, although I did not call 1-5, I called 1-2 and 4-5.

smd55, I looked here https://my.housecope.com/wp-content/uploads/ext/2255/forum/viewtopic.php?t=205179 carefully before going to the boiler, that's why I diagnosed the bridge departure. And now he began to doubt.

Warnings: 1

Posts: 266

Yes, but after the expiration of the limitation period it could be canceled

I apologize, but I wrote in the subject line (I rang the winding gas valve V1 = 2.9 kOhm (1-2), V2 = 1.6 kOhm (3-4)) Nobody said what was right or wrong. I wrote that the Voltage is 200V there are 1-4 and 2-3 contacts at the time of ignition of the boiler - no one said anything. I am almost 99% sure that the problem is most likely in the brain that at the time of ignition there should be 220 terminals on 1-2 terminals, but they are not 3-4 voltage changes. came

He advised to change the boiler! Along the way, and here are such tips!

ut5esd, read this manual for your gas valve. To check its operability, as well as the serviceability of the control board, a conventional multimeter is not always enough. The control of this gas valve is not as simple as it seems at first glance. for this, the instructions for this device should help you.

Yes, I have already downloaded the manual. Thanks for the advice. After all, I can supply the valve (s) with a rectified voltage of 220V and if they are working "clack" .valve-question what?

Well, or the question is how to check the gas valve.

For the first time Sasha will not clack loudly - you will hardly hear
secondly 220 v should not be applied to it impudently - low voltage modulation coil
3 main thing I wrote to you xarl, in the 4th post

anatol22, or rather like a supermicra?

Well, if you think so, I would have at least 2 control boards in stock (at today's prices 20t). The boiler is not more complicated than the machine, only more dangerous because of the gas.

I ask the masters about the possible causes of the breakdown (after all, I am not the only one with such a breakdown) And on the advice I can figure out what problem I have.

Official BAXI Forum in Russia

Message Olegbez "14 Jan 2013, 10:37

Message BAXI-Ural »14 Jan 2013, 10:52

Message Olegbez "14 Jan 2013, 13:31

Message BAXI-Ural "14 Jan 2013, 14:46

A cheap analogue of the Honeywell c6065 pressure switch was found. Made in the same place as the original, i.e. in China.

On my Nuvola 3 Comfort, and this is not an economy option (in 2011 I paid about 60 tr for it), my native plastic died in the first winter. Thanks and-no, I figured it out, bought Honeywell, it has been working for the sixth year. I bought it in Cheboksary for 1465 rubles, today the price is about 4 thousand rubles, and in China I bought a spare one for 228 rubles.

The gas valve is an element of the gas supply system (including for a gas boiler) responsible for the reliability and safety of its operation.

If the boiler is equipped with a built-in gas burner, it is he who is responsible for supplying gas to the burner. Such systems are used in the presence of an atmospheric burner and a floor or wall boiler.

Similar equipment is used in household heating systems. Most often, they mean individual heating installations that work using energy from a gas boiler. The boiler in the house must work constantly, which is quite natural.

However, primitive valves are not able to provide normal automation or autonomy of the process. Running to the boiler every time when you need to start its work is not a pleasure for everyone.

It is in these situations that gas valves are used. They are able to optimize the operation of heating equipment as much as possible by shutting off and supplying gas at the right time.

With the valve installed, you no longer have to worry about various troubles associated with interruptions in the operation of heating systems. And the boiler itself will be much safer, since at a critical moment the system will be able to shut down on its own.

Equipment of this type is presented on the market by products of many manufacturers, including products from Honeywell. This company produces, in particular, various elements of shut-off, three-way and shut-off valves for water supply, as well as automation elements for gas equipment.

It is also possible to obtain from this manufacturer all the necessary fittings for organizing domestic hot water supply (for example, a Honeywell safety choke). Moreover, the resulting products will differ in reliability, workmanship and reasonable price.

When using water heating equipment on gas, so-called electromagnetic valve circuits are used.

The scheme of operation of such a mechanism assumes the supply of electricity to the coil, due to which, under the electromagnetic influence, the core of the device is drawn into the coil. Thus, the part begins to supply gas to the system.

There are several options for such products:

• One-way solenoid. This sample has two positions - "fully open" and "fully closed". In the open position, the throttle allows the entire volume of gas that can be supplied to enter the system (also called one-stage);
• Two-stage (or two-way). The core of this sample can be in a position intermediate between "open" and "closed". Then it is possible, at the beginning of the boiler operation, to supply a small amount of gas to the burner and start it smoothly. After a while, gas is fully supplied to the system. Among other things, the intermediate position allows a stable flame to be created on the burner;
• Three-way solenoid (otherwise - three-stage). It is used in boilers with two operating power levels. Then there is a position without gas supply, a mode for ignition and two options for operating the boiler.
• Modulated. In this case, the position of the core can be set by continuously adjusting the burner power (modulation);
• Model for systems with piezo ignition. The system used here does not depend on the availability of electricity. In this case, the choke is manually opened by the user and then held open by a coil connected to a thermocouple.

The "multiblock" system is also often used, that is, the throttle is not supplied separately for a gas boiler, but is a one-piece block of a filter, pressure switch, stabilizer, etc. (the gas valve device can be built in a similar way).

It is also recommended to use other fittings from this manufacturer in the system. For example, a Honeywell pressure reducing throttle required for organizing a hot water supply system or a Honeywell three-way valve.

Since gas valves (also as part of multiblocks) are not operated separately from gas equipment, the product description often indicates on which manufacturer's boilers they can be installed.

Gas valve VK4105G (5108 4) is a model with a built-in modulator that can be installed on Baxi, Mainfour or Junkers boilers. This Honeywell solenoid valve uses connection ¾, requires a 230V power supply, and the maximum gas pressure in the system is 60 mbar.

There are adjusting bolts on the body of the device that allow you to adjust the maximum and minimum pressure on the burner, as well as the gas supply.

The VK4105M gas valve has performance characteristics similar to the previous one. Sometimes, for some articles of this model, other manufacturers of compatible boilers may be mentioned.One block with ignition regulator S45XX can be supplied.

You can buy this range of gas valves for $ 75 or more.

The VS8620C gas valve is a combination unit with an additional burner with two thermocouples and a thermostat.

This configuration makes it possible to build an automated heating system for a domestic boiler based on two thermoelements, the maximum pressure is 30 mbar. This model of Honeywell gas valves can be purchased for US $ 50 or more.

To compensate for the pressure and maintain the temperature already for the heating network, a three-way Honeywell valve can be used.

Gas valve V5475 - is an element of gas automation with a working gas pressure of up to 50 mbar, the power of the boiler on which this device can be installed is up to 32 kW.

The device is non-volatile, uses a piezoelectric element and has the ability to automatically turn off when the gas supply is cut off or there is no traction in the system. Compatible with boilers "Mayak", "Zhitomir", "Danko".

Gas valve Honeywell V5474G - a model with mechanical modulation, non-volatile, has characteristics similar to the previous model and the same type of compatibility. It can handle many different gases.

A Honeywell gas valve for these models will cost $ 32 or more.

Gas valve VS8620C 1011b - compatible with boilers:

The mechanism is non-volatile, power is 60 W. It allows you to control the gas supply to gas equipment, to maintain the operation of those at low gas pressure.

Gas valve VR4605C - designed to work with a maximum gas pressure of 60 mbar, with a voltage of 220 V and temperatures up to +60 C.

Considering that Honeywell also manufactures various plumbing fittings, reducing samples from this manufacturer can be used to work on a system with these valves.

For example, a Honeywell D04FS pressure reducing valve, a Honeywell D06F pressure reducing valve. These models are used wherever pressure reduction of the flowing medium is required.

Such solutions are relevant for industrial distribution centers. Also at production facilities, a three-way valve with an electric drive is also applicable - it is installed in areas of large diameter to simplify adjustment.

In addition to regulating units, there are other models among the products. For example, a Honeywell check valve. This mechanism is useful in order to prevent the medium from flowing back through the pipeline.

In baxi boilers of all series, two versions of gas valves could be used: SIT or Honeywell. When diagnosing the electrical part of the valves, the resistances on the coils are measured (in either case, there are two of them).

SIT SIGMA 845048
on slots 1 - 3: 6.5 kΩ
on slots 1 - 4: 7.4 kΩ
on the modulator contacts (where two wires are suitable) 20 Ohm

Honeywell VK4105M
on slots 1 - 2: 2.8 kΩ
on slots 4 - 5: 1.3 kΩ
on the modulator contacts (where two wires are suitable) 40 Ohm

To measure resistances, the boiler must be de-energized. Infinite resistance indicates a break in the coil and the need to replace it (or replace the valve assembly). Replacement work must be carried out by a qualified technician with a corresponding permit.

The numbering of the connectors is on the valve - you can also see the figure.

Modern gas boilers are quite sophisticated technological equipment. With proper care and proper handling, the gas boiler will serve for a long time without any interruptions. However, even the most expensive and functional equipment has its own resource, after the exhaustion of which all sorts of malfunctions begin to appear.

DIY gas boiler repair

Knowing the main causes of malfunctions and the procedure for eliminating them, you can repair your gas boiler with your own hands. This is a very painstaking, responsible, but in most cases relatively easy job.

Contents of step-by-step instructions:

First of all, it is necessary to establish why any malfunctions may occur in the operation of gas heating boilers. A number of different factors can lead to problems.

Modern gas boilers are equipped with various automation equipment. These funds, in turn, are powered by electricity. And, despite the fact that the 21st century is already in the yard and systems for the use of alternative energy sources are being actively developed around the world, the problem of stability of power grids remains relevant for many regions, especially for remote villages and all kinds of summer cottages.

A sudden power outage or a strong surge in electricity is one of the main enemies of any modern gas boiler.

To avoid all the accompanying troubles, buy a quality stabilizer in advance. Do not spare money to buy this device - there is little sense from cheap models, so it is better to immediately allocate funds to purchase a good stabilizer from a well-known manufacturer. Be sure that in the event of a breakdown of the automation, you will spend much more money on its repair and replacement.

At home, wall-mounted models of gas boilers are often used. Such devices are simultaneously responsible for both space heating and hot water preparation.

The design of wall-hung boilers includes a flow-through heat exchanger. Low-quality hard water with various impurities is the main enemy of the heat exchanger of a gas boiler. At the same time, under the influence of low-quality water, the heat exchanger can fail in just one season.

Install special filters to prevent such damage. The best option is a complete water purification system. With it, your boiler will work as long as possible, and using purified water is much safer for health.

Any knowledgeable person will tell you: only qualified specialists should be engaged in the installation and piping of gas heating equipment.

Even the slightest mistakes at the stages of installation and connection of equipment can lead to irreversible consequences. For example, an incorrectly executed piping in the case of a cast-iron gas boiler more powerful than 50 kW will lead to the fact that the unit will simply split at low temperatures.

If you are not an experienced gas operator, entrust the boiler installation to professionals.

Therefore, if you are not an experienced gas operator, entrust the installation of the boiler to professionals - this way you will save yourself from many problems in the future.

Unfavorable weather conditions can also lead to the appearance of many different problems. In frosty winters, people turn on the heating at almost full capacity. This leads to a significant decrease in pressure in the gas pipeline system. As a result, boilers cannot fully realize their potential.

You will not be able to solve this problem on your own - you still cannot explain to your neighbors that by their actions they only aggravate the situation. As a solution to the problem, you can install an additional boiler that runs on a different fuel.

Automatic solid fuel coal-fired boiler with hopper

A modern gas boiler is a complex and potentially dangerous system. The main danger of such units is the risk of a gas explosion in the event of improper handling of the equipment or untimely elimination of various malfunctions.

Various kinds of automation are responsible for maintaining the operation of the gas boiler at an optimal level. An inexperienced user is often unable to understand its device. Therefore, it is better to immediately invite specialists to troubleshoot serious problems.

On your own, you can try to eliminate only visible damage and various contaminants that have led to the failure of the pipe, chimney and other parts of the boiler.

Typical malfunctions of gas boilers

There are a number of typical problems that you can fix yourself in most cases. Problems will also be listed, in the event of which you can only protect yourself before the arrival of a specialist.

If a distinct smell of gas or smoke appears in the room, immediately turn off the boiler and leave the room, opening it for ventilation.

Gas boiler functionality diagram

Call a professional immediately. Trying to solve the gas leak problem on your own without the necessary skills is extremely dangerous and unreasonable.

If the flame sensor or the gas supply pipe breaks down, turn off the boiler, close all gas valves and let the unit cool down completely.

Return to the area after a while to check for the smell of gas. If everything is in order with the draft, try to turn on the boiler again. If there is no thrust, immediately call a repairman.

Overheating is one of the most common problems in modern gas boilers. The reason for this may be a malfunction of the automation equipment or a clogged heat exchanger.

It is impossible to cope with the repair of automation without the appropriate knowledge.

You can also clean the heat exchanger with your own hands. The most common materials for the manufacture of heat exchangers are copper and stainless steel. There is usually no problem cleaning them, but be extremely careful anyway.

Primary heat exchanger for wall mounted gas boiler Beretta

According to the recommendations of the manufacturers, the heat exchangers must be cleaned of soot every few years (each manufacturer indicates a specific interval in the instructions for their equipment).

Primary heat exchanger (heating circuit) of the gas boiler Rinnai SMF

To clean the heat exchanger, simply remove it and clean it thoroughly with a metal brush. In the case of a copper heat exchanger, it is best to replace the brush with a metal sponge used for washing dishes.

The problematic place of fans is their bearings. If the fan of your boiler stops developing the set number of revolutions, try to eliminate the problem as soon as possible.

Fan (3311806000) for Daewoo gas boiler

To do this, remove the back of the fan, take out the stator and lubricate the bearings. Machine oil is fine for lubrication, but it is best to use a higher quality carbon compound with heat-resistant properties if possible.

Fan RLA97 (Aa10020004) for gas boiler Electrolux

Also, an interturn short circuit can lead to problems with the fan. Only a specialist can cope with the elimination of this malfunction. Return the stator for repair to replace the winding, or immediately replace the faulty unit with a new device.

Gas boiler chimney diagram

Often, excessive clogging of the coaxial chimney leads to the appearance of various malfunctions in the operation of a gas heating boiler.

Remove the chimney and thoroughly clean all of its components from soot. So you will not only return the previous level of efficiency of the unit, but also significantly increase the efficiency of the boiler.

The boiler can shut down spontaneously for several reasons. This usually happens due to a malfunction of the combustion sensor. This problem, in turn, most often leads to contamination of the gas pipe.

Draft sensor 87 ° C for Thermona boiler

Remove the branch pipe, rinse it thoroughly with water, clean it with a cotton swab and blow it off the remaining moisture. Put the pipe back in place and try to turn on the boiler. If it doesn't help, call the wizard.

No wonder they say: the best repair is prevention. Gas boilers require annual preventive maintenance, which must be carried out before the start of the heating season.

Whenever possible, maintenance should be carried out twice a year, before and after the heating season.

Check all the previously discussed boiler elements for their serviceability. Follow the preventive maintenance recommendations given by the manufacturer in the instructions specific to your boiler. Eliminate any malfunctions that arise in time, if possible.

Remember! A gas boiler is a potentially hazardous equipment. Incorrect use and untimely troubleshooting can lead to irreparable consequences. Therefore, be careful and do not engage in any repair work if you doubt your ability and correctness of action. Otherwise, follow the instructions provided.