The E10 error in the Roca boiler is basically a problem of lack of pressure inside the heating installation. This low pressure is a generic problem, since it can be due to various causes, and here we will analyse them one by one along with their possible solutions. So, if you have wondered things such as: What does E10 mean in the Roca boiler?, or how to remove the E10 error in Baxi boilers?, then this is your article. You can also see the Roca spare parts that we have available in Suner.
What does E10 mean in the Roca boiler?
Error E10 in the Roca boiler means that the hydraulic pressure switch failed to rise, that is, there is low pressure due to lack of water in the heating circuit. Error E10 in the Roca boiler does not indicate a serious or urgent problem. Except that in this state the boiler cannot work, it blocks and shows the error code on the display.
We will look at the solutions for this failure under the next heading. Here we will first determine what is considered normal pressure and low pressure in Roca boilers.
It is usually considered that the normal pressure for any domestic wall-mounted boiler should be an average of 1.2 bars. However, brand manufacturers set more specific pressure parameters for their equipment. So, what is the normal pressure for a Roca boiler according to the manual ?
For example, for a Baxi Main Digit boiler, the normal pressure with the equipment cold must be between 0.7 and 1.5 bar (which greatly expands the generic parameter of 1.2 bar). Less than 0.7 bar is low pressure, and more than 1.5 bar is overpressure.
When there is excess pressure, the safety valve must open and expel the excess pressure in the form of water and steam. But when there is low pressure, the solution cannot be automatic but manual. At a minimum, you will have to do a manual reset. Let’s look at the causes and solutions.
Error E10 in the Baxi Roca boiler (Table of causes and solutions)
As we often do, let’s first see a summary table with the causes and solutions for error E10 in the Roca boiler, and after the table we will go into more detail.
| CAUSES AND SOLUTIONS FOR ERROR E10 IN THE ROCA BOILER (TABLE) | |
| CAUSE | SOLUTION |
| 1. Normal operation lockout, and the display shows E10. | 1. Reset the boiler (press the R button for at least 2 seconds). |
| 2. The pressure is low due to a normal loss of water in the heating circuit. | 2. The installation must be filled with water using the filling tap, until the pressure is between 0.7 and 1.5 bar. |
| 3. Water escaping due to drain or drain cock left open or broken in the Open position. | 3. Close, maintain or replace the drain or drain cock, as appropriate. |
| 4. The safety valve is stuck or damaged, and it expels water when it does not belong. | 4. Replace the safety valve with a good replacement. |
| 5. There are water leaks in the installation or in one of the radiators. | 5. Eliminate the leak in the system or in the radiators. |
| 6. The water circulation pump is stuck or broken. | 6. Unblock or repair the circulation pump, or replace it if necessary. |
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How to remove the E10 error in Baxi boilers?
Now let’s talk about how to remove the E10 error in Baxi boilers, or what is the same: How to raise the pressure of the Baxi boiler until it is restored to its normal level? This heading focuses specifically on how to raise the pressure of the Baxi boiler. However, most, if not all, of these methods apply perfectly to other brands of boilers.
The design of today’s wall-mounted boilers is very similar from one brand to another, and therefore the same occurs with errors and solutions. While error code systems vary a lot from brand to brand, basic problems and ways to resolve them do not.
1. The first solution: reset the boiler
As is also the case for many other brands of boilers on the market today, several of the Baxi Roca boiler error codes can be resolved with a good reset. So, an important point to know regarding the E10 error is: How to reset a Baxi boiler? Baxi boilers generally include a button or knob with the indication R or Reset, either on the same power button or separately.
The way to reset (that is, restart or rearm) the Baxi boiler is to press the Reset button for at least 2 seconds, or until the boiler enters the reset state in a similar time. Upon restart, the boiler will automatically turn off and on, and normally user-programmed parameters should not be lost. This manual reset can resolve many of the error codes on this brand of boiler.
2. Low pressure due to lack of water in the installation
To raise the pressure of the Baxi boiler, we must start by taking into account the cause that caused the pressure to drop. The first of all causes will always be the drop in pressure due to loss of water. This is completely normal in any equipment that works with circulating hot water. There will always be a normal rate of water loss, causing a drop in pressure.
As we said above, the normal pressure level of a Baxi boiler (according to the manual, which you can download following this link ) is usually between 0.7 and 1.5 bar when the equipment is cold. Below that it is considered lack of pressure, and before this the boiler will be blocked and will show an E10 error.
The process of recharging the heating circuit associated with the Baxi Roca boiler can be carried out normally, as with any other brand of boiler, by opening the filling tap until the pressure reaches the desired level (after which it is important not to forget to close the filler cock, to avoid excess pressure).
However, the Baxi Roca Main Digit boiler manual adds a couple of tips: it recommends opening the filling tap very slowly, to facilitate air purging. And it also says that during the water filling process, the Summer/Winter selector must be in the OFF position (0).
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3. The drain cock is open or faulty
As we know, not all boilers have a tap or drain valve. But Roca boilers usually have one. This makes many things easier, such as boiler and system maintenance, cleaning and purging processes. But it also brings an associated problem, which is the loss of water due to forgetting to close the drain valve, or because it is damaged in the open position.
If the drain valve is left open for any reason, it causes a loss of water that can be considerable, and a consequent drop in pressure. In these cases, if it is not enough to close the drain or emptying valve properly, it will have to be replaced with a spare.
4. The safety valve expels water unnecessarily
The normal function of a safety valve is to expel excess pressure that occurs inside the boiler. However, if the safety valve becomes clogged or fails, it can cause a continuous leak (from drips to spurts) causing the pressure in the boiler to drop due to lack of water.
Beyond the palliative measure of continually refilling the installation with water, the best thing to do is put into practice the real solution, which is none other than replacing the safety valve with a good replacement.
5. Water leakage through radiators
If any day you discover a puddle of water under a radiator, that means that equipment has a leak. A tiny leak can perhaps be tolerated and postponed by the old “don’t pay any attention to it” method, or put out a pan to catch the drips. But when the leak begins to be considerable, the boiler will begin to lose pressure and block due to lack of water. From that point on the solution is, of course, to repair the leak.
SPARE PARTS FOR ROCA 20/20F BOILER
6. Clogged or faulty water circulation pump
The circulation pump is the part that allows the water heated by the boiler to reach the heating radiators and the hot water taps (in the case of mixed heating and DHW boilers).
If for any reason (blockages, dirt, lack of lubrication, breakdowns, etc.) the water circulation pump does not perform its function, the boiler will be affected by a drastic lack of water and a drop in pressure, as well as by an excess of temperature that will cause blockage.
In these cases, it is necessary to unclog, maintain or even replace the circulation pump (if it is completely damaged).
