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Kessel PCB

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How to reset the boiler?

The steps for resetting the boiler vary depending on the make and model of the boiler unit itself. Therefore, when the customer needs to reset the boiler, be sure to refer to the manufacturer’s manual.

Here is the basic procedure for resetting a boiler:
a. Press the reset button
b. Wait for the boiler to re-ignite
c. After the boiler reset process is complete, allow the boiler to sit for a few minutes to relight and repressurize.

reset-the-boiler PCB

What causes PCB failure in boiler PCB?

Our engineering concluded that the most common cause of PCB failure is the aging of the device itself.

There are also many moving parts in boiler equipment that wear out over time, so manufacturers need to replace the equipment.

Water damage to PCB: We know that water and electricity cannot be mixed, and if there is a leak, it will cause significant damage to the PCB. Of course, there are many reasons for leaks, such as wear, tear, parts problems, etc.

How much does it cost to install a new PCB in a boiler?

We know that the PCB is the most expensive component in a boiler. Customers should expect repairs to cost between $300-400.

Also, prices vary widely from project to project, as your boiler’s PCB cost may be $100 or more less than another boiler’s PCB cost.

As a result, the cost of replacing the boiler is lower than that of replacing the boiler, so it is very important for the customer to professionally evaluate the condition of the boiler before repairing. So replacing a boiler with a new one might be a more cost-effective solution.


The PCBs control every action and can be found mostly in appliances. It always monitors a range of sensors and gauges.

As soon as it notices an oddity, it will lock out and show fault encryption.

At Venture, you can have many selections of boiler PCBs

Your Leading Boiler PCB Supplier in China

For over 20 years, we have been offering PCB services to our customers from all over the world. As an experienced manufacturer, Venture’s aim is to provide the best quality products of PCBs.

Venture is offering a full-range of boiler PCBs.

To allow your boiler to work efficiently and interconnect all electronic components in your boiler, you need a boiler PBC. The PBC makes it work.

All electronic Komponenten communicate with the PCB. The heart of the boiler is the PCB.

For example, to say that the fan is operational, the air pressure switch will send a signal to the circuit board. It is helping to escape gases out the flue, and therefore, is safe to ignite.

The PCB always monitors a range of sensors and gauges. This ensures that the boiler is working within forbearances in terms of temperatures and pressures at all times. As soon as it notices an oddity, it will lock out and show fault encryption.

To ensure that the boiler is working in a way that won’t cause damage to internal parts and is not posing any threats to people in a property.

The PCB is always monitoring the temperatures, pressure, and currents.

There are several symptoms of a faulty PCB, that includes intermittent display panel operation, burning smell coming from the boiler, no power on the display panel, and the boiler operates sporadically.

To determine the cause of the fault, you must find the leaking boiler, cracks, and fractures, and weak or damaged soldered joints.

However, finding the faulty PCB is not necessarily easy. So, it is better to call an engineer.

We offer our valued customers the very great products at the most affordable pricing. We will give you the one-stop solution for all your boiler PCB demands.

If you want any type of boiler PCB, please contact us. We will be happy to provide you the best boiler PCB design solution.

For your questions, please inform us.

Kesselplatine: Der ultimative FAQ-Leitfaden


I know you’re looking for a high-performance boiler PCB.

That’s why this guide will answer all questions you have been asking about boiler PCB.

It will help you choose the best boiler printed circuit boards.

Lesen Sie weiter, um mehr zu erfahren.

What is a Boiler PCB?

A boiler PCB is a printed circuit board that controls the electrical functions of your boiler system.

You find boiler systems to have various electrical functions that are controlled by the boiler PCB.



What are the Functions Controlled by the Boiler PCB?

You find the boiler PCB regulates the following functions:

  • The boiler PCB communicates with the air pressure control to initiate a safe ignition process.
  • You also find the boiler PCB guides the operating temperature range of the boiler system’s inflow and return.

The boiler PCB responds to NTC thermistors to maintain the temperature within the desired range.

  • The boiler also prevents damage to your boiler and its connections by maintaining the current and pressure requirements.

How do you Detect Faulty Boiler PCB?

The boiler PCB can malfunction, resulting in erroneous functions or failure to perform.

You have to be aware of the signs indicating your board has failed to address them in time.

Some of the ways boiler PCB errors manifest is as follows:

  • You can have an irregular flickering of the lights on your display panel, suggesting a damaged boiler PCB.

You find such an occurrence happening since all electrical functions, including the display panel, are controlled by the boiler PCB.

  • When components or other circuit parts on the boiler burn up, they produce a characteristic smell.

You can catch this smell and examine the board to ascertain the cause.

  • Other than an irregular flicker on the display panel, you find the panel can fail to power up.

You realize that a faulty board can fail to deliver power to the display panel.

  • Sometimes you find dubious responses from your boiler such as uncharacteristic commands and sudden shutdowns.

These kinds of irregular responses could highlight a problem with the boiler PCB.

Can a Leaking Boiler Damage the Boiler PCB?

Ja, kann es.

You find a leaking boiler can result from different reasons, such as an unsecured connection and the pump system.

Also, a crevice formation at the exchanger can cause your boiler to leak.

When water creeps to the circuit board, it can cause an electrical malfunction, such as a short circuit.

A Kurzschluss on the boiler PCB can result in component failure, negatively impacting board performance.

You should immediately address leakage in a boiler system and examine the boiler PCB to establish whether it’s affected.

In case the boiler PCB is damaged, you have to replace it.

Can you Rework Solder Joints on Boiler PCB?

The solder joints on your boiler circuit board can need a rework for a variety of reasons.

You can have the joints damaged through blunt force application or gradual weathering.

Sometimes when the solder joints on your boiler PCB are weak, they break off, resulting in component detachment.

In light of damaged solder joints, you realize your boiler PCB malfunctions impairing the boiler system.

You can repair the solder damages by carrying out a rework process such as manual soldering and spot welding.

However, you find replacing the boiler PCB to be more efficient.


 Gas boiler PCB

When should you Replace the Boiler PCB?

At times, you may replace boiler PCB under the following circumstances:

  • When the damage on your board is beyond repair.
  • When the cost of repair is high such that it is more economical to replace the board. You attach the cost of repair to the parts being replaced and the cost of labor.
  • When your board has exhausted its useful service life.

Why does a Boiler PCB Lock out Sometimes?

The boiler PCB is the central command center for all the boiler system’s electrical functions.

You discover a boiler PCB can lockout as a protective measure.

Before your boiler powers up, the boiler PCB communicates with the fan commanding it to start.

You realize this happens as the PCB ensures a change in air pressure instigated by the fan precedes the kindling.

You find the fan is essential because it conducts away toxic fumes through the flue.

A functional fan allows the gas regulator to release gas into the burner.

The burner has a spark initiator that ignites the gas, which starts the boiler process.

The boiler process is regulated by your boiler PCB using a sensor system and different gauges.

Thus, you find your boiler only works within set temperature values and pressure levels.

You will observe a boiler PCB lockout communicated through the display panel when there’s an irregular occurrence.

For example, you can observe an uncharacteristic spike in the boiler temperature.

You can attribute such a scenario to an excess gas inflow due to leakage or a defective valve.

What Causes a Boiler PCB to Cut the Power before the Desired Water Temperature is attained?

Sometimes your boiler PCB is inconsistent in the power supply resulting in the boiler alternating on and off states.

When this happens, you find that other parts in the boiler system are overworked.

It would help if you fixed the boiler PCB immediately to mitigate the issue.

Otherwise, the pressure on the other parts of the system can result in massive damage.

Replacing these parts will be a costly venture, and you will be lucky only to require repair work.

You should carry out a careful examination of the boiler PCB to identify the source of the error.

NTC thermistors are typically employed as temperature sensors for your boiler for the inflow and outflow.

These thermistors communicate with the boiler PCB, which indicates the resistance value that decreases as the temperature values increases.

The boiler PCB ensures the temperatures recorded for the water flowing out and into the boiler are within acceptable limits.

You find that an electrical circuit fault in the boiler PCB will produce erroneous resistance values.

The boiler PCB can cut power supply when the thermistors provide a reading suggesting a higher temperature than is real.

Alternately, you find power supply continued when the temperature value of the water seems to drop.

Is the Boiler PCB at Fault when the Fan Malfunctions?

The boiler fan is useful in eliminating toxic fumes through the flue.

Your boiler fan can malfunction in such a way that it fails to start or fails to stop.

Your boiler’s ignition process will not start unless the boiler PCB greenlights the process by detecting the fan.

As such, you need an absolute path of connection between the fan and the boiler PCB.

You find both the fan and boiler circuit board are connected to the air pressure control.

The air pressure control is responsible for the changes in your boiler’s pressure levels.

When the fan is in operation, the air pressure control recognizes changes in the boiler’s pressure levels.

Consequently, you find that the boiler PCB will initiate the ignition process upon detecting the difference.

Therefore, a problem in connecting the boiler PCB, fan, and air switch control can cause miscommunication.

You find this can be misconstrued as a faulty board and should therefore be checked.

Water resulting from leakage can damage the connection as well as having loose wiring.

Identifying these faults and correcting them is ideal to ensure a well-functioning fan.

Why does the Boiler PCB Display a Memory Fault?

You note the memory fault is displayed as a code on the display panel.

You are likely to have such a display when you insufficiently configure your PCB.

You are likely to configure your boiler PCB in two instances poorly.

One instance is when you replace your circuit board, and another is when setting up a new boiler.

You are to carefully read the installation manual of your boiler or boiler circuit board when attempting installation.

You are typically fashioned with a product code that allows you to initiate communication between the boiler and the PCB.

Why does a Boiler PCB become Unresponsive Sometimes?

Many times when a boiler PCB fails to communicate, you find it is a generic piece.

Usually, you use a chip card to complement your generic board allowing it to function alongside the boiler.

You have to insert the boiler chip card correctly; otherwise, the printed circuit board will be unresponsive.

Additionally, a correctly inserted but defective chip card will make the PCB indifferent to its roles.

Can Water damage the Boiler PCB?

Water is a significant threat to the integrity of your boiler PCB.

You find water interferes with the electrical conductivity of your boiler PCB resulting in performance failures.

When the water in the form of moisture comes into contact with the PCB wiring, it causes them to burn up.

You find this to be stimulated by the current flowing through the wire.

The burning up of connections on your boiler PCB can fail the board or irregular operation.

You have to remedy the situation by finding the point of leakage and fixing it.

You find that most leakages emanate from water-laden areas such as the pump and the heat exchanger.

A heat exchanger is likely to leak upon the development of cracks initiated by limescale growth by creating hot spots.

On the other hand, pumps can leak due to aging, blockage by sludge, or sustained operation at high speeds.

You find such conditions can blow the seals creating leakage that seeps to the circuit board.

You can prevent water damage to the PCB by ensuring your boiler system is without sludge from the heating process.

It is also essential to carry out a flush with hot water alongside employing an inhibitor with scale reducing and magnetic filters.

Boiler printed circuit board

 Boiler printed circuit board

What Boiler PCB issues can Result from Boiler Vibrations?

Your boiler PCB has a useful service life beyond which its expected performance levels diminish.

You, therefore, find that a boiler PCB will succumb to wear over time.

However, there are some conditions that you find liable to greatly diminishing the life of your boiler PCB.

For instance, you find boiler vibrations can result in the loosening and detachment of components.

You will also find that too much vibration can dislodge the chip card from its socket.

The breaking off of solder joints is also an occurrence you can encounter as a result of vibrations.

Is it Expensive to Install a Boiler PCB?

You can replace your boiler PCB for several reasons, such as old age, irreversible damage, and a costly repair.

The boiler PCB is essential for your board as it is the central control for all electrical functions.

The cost of installing a PCB for your boiler will depend on the boiler system’s type and size.

You find different boiler systems can require different functions with dissimilar current requirements.

Additionally, when not carrying out the installation yourself, your contracted labor will add to the overall installation cost.

The labor cost can be charged hourly or be specific to the nature of the job.

What Type of Circuit Board is a Boiler PCB?

You will finder boiler PCBs furnished as starre Leiterplatten.

Rigid boiler PCB

Rigid Boiler PCB

A rigid circuit board is one you cannot bend by its solid frame.

Unlike rigid circuit boards, flexible Leiterplatten can be bent.

Flexible Leiterplatte

Flexible Leiterplatte

Additionally, you have rigid-flex boards, which have aspects of both the rigid and flexible circuit board.

Starre flexible Leiterplatte

 Starre flexible Leiterplatte

You find rigid PCBs involve less technology to fabricate and thus are cheaper compared to the flexible PCBs.

Furthermore, you can extract a longer useful life from rigid boards than flexible boards.

What are the Non-conductive Materials use for the Boiler PCB?

As a printed circuit board, you find the boiler PCB to be made from both conductive and non-conductive material.

You use conductive Leiterplattenmaterial to furnish the path for electrical charge transfer.

You employ non-conductive material for electrical isolation.

You find fiberglass and epoxy as two common non-conductive materials used for boiler PCB fabrication.

· Glasfaserglas

Fiberglass is a material type where you find glass fibers have been entwined to form a fabric.

The glass fibers are reinforced with plastic derivatives such as thermoset polymer.

You find fiberglass to have different material properties such as the high strength to weight ratio, which beats many metals.

Additionally, fiberglass is not conductive and magnetic while impervious to the effects of electromagnetic radiation.

Furthermore, you find fiberglass to be chemically dormant while allowing use in different forms and shapes.

· Epoxy

Epoxy is a material derived from resins composed of polymer variants.

You find that epoxies’ manufacture involves a curation process where epoxides are reacted with hardeners such as phenols are thiols.

You find epoxies to possess good mechanical properties while recording high resistance values to thermal and chemical influences.

Is Electrolytic Foil used as a Processing Technology for Boiler PCBs?


You find the conductive layers for the boiler PCB can be furnished through the electrolytic foil process.

The electrolytic copper foil you find in boiler PCBs are produced through an electrolysis process.

You find copper wires of electrolytic copper purity dissolved in sulfuric acid to produce copper sulfate solution.

Thereafter a metallic roller is employed as a cathode before an electrolytic process results in copper deposition.

The deposition on the cathode surface occurs continuously, resulting in a foil formation.

You peel this foil to reveal two distinct rough and smooth surfaces.

You treat the rough surface and attach it to the resin material of your board.

The smooth surface is the one that is attached to the cathode and is typically employed for the conductive path.

Do Boiler PCBs Employ Lead-free Material?

Lead is an element whose use you find prohibited by the Restriction of Hazardous Substances directive of the European Union.

Restriction of the lead element is due to environmental and personal health concerns.

You find the use of lead common in PCB construction, especially in soldering material.

You employ soldering material in the attachment of components to your boiler PCB.

The solder material you use is usually a composition of tin and lead in a three to two ratio, respectively.

Therefore, using lead-free material requires the elimination of lead from the material composition of solder.

In lead-free fabrication, you can replace the lead from the solder with elements such as silver.

However, you will have a higher ratio of tin around 19:1.

You find that using lead-free solder material, for instance, requires higher melting temperatures, which is a complex issue during fabrication.

Consequently, other board materials are affected, especially when their decomposition temperature is lower than the lead-free solder’s melting temperature.

Can you use FR-4 as the Dielectric Material for Boiler PCBs?

FR-4 Material is derived from fiberglass and epoxy combinations to make Leiterplattenlaminate.

You find its properties such as high breakdown voltage and low dissipation factor make it an excellent dielectric material.

The FR-4 material cannot easily combust, and you find it highly flexible with a dependable strength-to-weight ratio.

Additionally, you find it creates efficient electrical isolation with the conductive layers with minimal water absorption.

When you use FR-4 material for your boiler PCB, you also find that it maintains physical properties regardless of the condition.

You note the temperature and moisture conditions do not affect its thermal and electrical properties.

Another advantage you note using the FR-4 material is its large flexural strength and high decomposition temperature.

Consequently, the FR-4 material will retain its structural integrity even when the boiler temperatures rise.



Where is Copper used on the Boiler PCB?

You find copper is used on PCBs to furnish the conductive path for the electrical signal.

The conductive path, otherwise known as a trace, is important in ensuring components are electrically connected.

You find the use of copper in boiler PCBs to be down to its good electrical conductivity and low resistance.

Consequently, you find the transfer of signals is without significant loss.

Furthermore, using a conductive trace reduces the complexity of traditional wiring.

Accordingly, you find the amount of trace material required is reduced.

Copper costs less than other conductive metal elements such as silver and gold due to its wide availability.

Therefore, you find using copper is cheaper, allowing you to fabricate boiler PCBs at lower costs.

How are Boiler PCBs Packaged?

The packaging is an essential element of the production, determining how you deliver your goods to the market.

You have to provide a comprehensive and safe packaging routine for boiler PCBs due to their fragile and sensitive makeup.

You find vacuum packaging for boiler PCBs where the air is eliminated from the containment before enclosing.

Additionally, you find a vacuum package prevents the encroachment of moisture onto the board surface, preventing deterioration.

The packages are usually plastic based and used for wrapping individual boards, which are bulk packed in carton boxes.

You find this to be effective, especially when handling large board numbers and for shipping purposes.

Can a Boiler PCB be Furnished as a Double-sided board?

A doppelseitige Leiterplatte has two conductive layers fabricated over a laminate.

You find that using a double-sided board allows you to achieve a higher circuit density.

A boiler PCB can be fabricated as a double-sided PCB, which allows you to use a higher component count.

You realize that you can connect components on both board sides with double-sided construction, increasing their throughput.

Furthermore, fabricating a boiler PCB on a two-layer construction allows you to reduce the board size without hampering its performance.

While relatively costlier than a single-sided board, you find the two-layer board is much cheaper than a multilayer construction.

Doppelseitige Leiterplatte

 Doppelseitige Leiterplatte

What Copper Thickness used in the Boiler PCB?

You define the copper thickness of a circuit board as a measure of weight provided in ounces.

The thickness is achieved when you spread the copper weight evenly over a foot square.

For instance, you find 1 oz copper weight is equivalent to 1.4 mils (a thousandth of an inch).

The copper thickness of your conductive trace is useful in determining the amount of current conducted.

When making printed circuit boards, copper layers with different weights are employed.

For a boiler PCB, you can employ varied copper weights such as 1 oz, 2 oz, and 4 oz.

You find some printed circuit boards with copper films weighing half an oz.

However, for boiler systems with large current ratings, you can use a multilayer construction to achieve a higher overall board thickness.

What is the Approximate Boiler Circuit Board Price?

You find the price of a boiler PCB to depend on its characteristics such as current and temperature rating.

Large boiler systems will require you to provide circuit boards with higher specifications and consequently higher prices.

Furthermore, you will find price differentials between manufacturers that speak to their design and brand power.

However, you can find a boiler circuit board for a small boiler system from a little less than a hundred dollars.

What are the Quality Standards for Boiler Printed Circuit Board?

Like other circuit boards, you find a boiler PCB has to meet the specifications underlined in provided standards.

Some of the quality standards used for the boiler PCB are:


This standard provides you a generalized quality assessment system for your boiler PCBs electronic components.

You find this standard specific for boiler circuit boards that are either single or two-layer with plated vias.


With this standard, you are provided testing approaches for the board materials, its features and connected peripherals.


You have this standard to guide the design process and use of your boiler PCB.

Under this standard, you find the component types and their attachment details are provided.

What are the Components of Boiler PCB?

You find various PCB-Komponenten employed on a boiler PCB to support its function.

Components used on a PCB can be through-hole mounted or surface mounted.



Through-hole mounted components are attached to the boiler PCB through plated drill holes.

You can attach these components through a manual soldering process or automated wave soldering.

Components on a boiler PCB that are through-hole mounted include some socketed integrated circuit chips, diodes, resistors and transistors.

You use leads in the components to secure them in the drilled holes.

Surface mounted components allow you to attach the component on the board surface without the expensive drilling process.

You place the components on solder pads after which you attach them to the board through a soldering process.

Many capacitors and MOSFET-Transistoren are surface mounted on the boiler circuit board.

Using surface mounted devices on your boiler circuit board allows you to increase the board’s component density and hence performance.

How do you Test Quality of Boiler PCB?

You can test the quality of your boiler PCB by carrying out various examinations and inspection procedures.

These procedures allow you to highlight any unintended faults for correction.

Common approaches to establishing the quality of your board includes:

· In-Circuit-Test

You use an in-circuit test to establish the integrity of your boiler PCB’s circuit network.

You employ probes in this test to match you board design allowing you reduced human error.

The probes are also referred to as “a bed of nails”.

You use these probes to evaluate the strength of the connections formed by the soldering process.

· The Flying Probe Test

As the name suggests, you use a probe hovering above your boiler PCB to establish the correctness of various elements.

You find this method to be a cheaper alternative to the in-circuit test method.

The flying probe test will help you identify open and short circuits on your board.

Additionally, you can check for your board’s inductance, resistance and capacitance values, alongside concerns relate to your diode.

How do you Assemble Components on Boiler PCB?

You will find the components on a boiler PCB to be either surface mount or through-holes.

While both components types are assembled through a soldering process, you find differences in the execution process.

The assembly process typically involves you fixing the surface-mounted components before embarking on the through-hole mounts.

You need a stencil to mark out the board areas you will apply solder paste for the SMDs.

Upon completing the stenciling, you can position your components on their respective solder pads.

For an automated assembly, you will use pick and place machines to precisely locate these components.

Upon successful positioning of the components, you transfer the boiler PCB to a reflow oven for the soldering process.

The process is carried out at elevated temperatures of about 250 0C.

You need to allow the board to cool before proceeding to inspect the board.

While inspecting you need to look out for visible faults such as misplacements or weak joints.

A successful inspection process allows you to proceed to the insertion of through-hole components into the plated through-holes.

You can manually carry out this process or employ the use of machines.

You find fixing through-holes is much easier as they’re inserted into the board allowing for a firmer attachment.

The soldering process of these components follows and you can automatically carry out the process by wave soldering.

Upon completion, you need to carry out an ultimate inspection procedure which you will follow up with a functionality test.

When your boiler PCB passes the tests it is subjected too, you can certify the completion of your assembly process.

In short, there are many factors to consider when choosing boiler PCB.

May be you could be having more questions about boiler PCB which we did not covers here.

Fühlen Sie sich frei zu kontaktieren Venture Electronics team.

We will help you choose the right boiler Leiterplatte.

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