Cointra 3-Way Valve Kit Excellent Low NOx Ref. 39842111
When you turn on the tap or activate the heating, the Cointra 3-Way Valve Kit Excellent Low NOx Ref. 39842111 is responsible for directing the water between the heating circuit and the domestic hot water circuit. If this valve fails, you will notice that you have hot water but no heating, or that both circuits are mixing, causing a lack of comfort in your home. This component is compatible with Cointra Excellent Micro Low NOx boilers, among others. It is advisable to replace it if you experience these issues to restore the proper functioning of your system.
VAT included
Consult via WhatsAppCointra boilers compatible with reference 39842111
3-way valve with reference 39842111. Eight confirmed compatibilities: Excellent Micro Low NOx 24E and Excellent Micro Low NOx 32E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Cointra Excellent Micro Low NOx 24E | Cointra Excellent Micro Low NOx | Contrasted |
| Cointra Excellent Micro Low NOx 32E | Cointra Excellent Micro Low NOx | Contrasted |
| Cointra Excellent D Micro LN 24E | Cointra Excellent Micro Low NOx | Contrasted |
| Cointra Excellent D Micro LN 32E | Cointra Excellent Micro Low NOx | Contrasted |
| Cointra Divatech Micro LN F24 D | Ferroli Divatech Micro LN | Contrasted |
| Cointra Divatech Micro LN F32 D | Ferroli Divatech Micro LN | Contrasted |
| Cointra Divaproject | Ferroli Diva (Divaproject / Divacondens) | Contrasted |
| Cointra Divacondens | Ferroli Diva (Divaproject / Divacondens) | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if the part number 39842111 is the one for your boiler.
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 39842111. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the 3-way valve 39842111 resolves.
The 3-way valve diverts water between heating and domestic hot water. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler heats one circuit but not the other: heating yes, domestic hot water no, or vice versa.
Cause: The valve shutter is not sealing properly in one of the two passages, causing the flow to be unevenly distributed among the circuits.
With the boiler in DHW mode, check if the supply pipe to the heating system is completely cold; if it warms up a bit, the valve is not closing properly.
- 02
It takes a long time to switch between heating and domestic hot water.
Cause: The internal mechanism moves with more resistance than normal, due to wear or limescale deposits in the body.
Count the seconds from when you turn on the tap until hot water comes out; a delay that didn't exist before points to the valve, not the boiler.
- 03
Noise or rattling in the gas valve when changing position.
Cause: The shutter hits its seat because the spring or the internal guide has lost precision.
Locate whether the noise comes from the body of the gas valve and not from the circulation pump, by placing your hand on each component separately.
- 04
Water leak from the body of the gas valve.
Cause: The internal gaskets degrade with cycles of heat and pressure and stop sealing between the body and the cover.
Dry the area well and check after a while of operation; a leak that reappears at the same point confirms the gasket, not just a simple condensation drip.
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Data sheet for the Cointra 39842111 three-way valve.
- Catalogue reference
- 39842111
- Brand
- Cointra
- Type of part
- 3-way valves
- Units in stock
- 3 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Code recorded in the body
- 4515166-04 (reading with typographical ambiguity in several characters; not guaranteed 100%)
Frequently asked questions about the 3-way valve 39842111
Is this valve kit compatible with the Cointra Excellent Micro Low NOx 24E?
Is this valve kit compatible with the Divatech Micro LN F32 D?
What is the reference for the Cointra 3-Way valve kit?
How many models are compatible with this valve kit?
What fault codes are documented for this product?
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