Cointra Gas Valve M 20 L 7754 Ref. 7559
Gas valve Cointra M 20 L 7754 Ref. 7559. This valve regulates and allows the flow of gas to the burner according to the instructions on the boiler's PCB. When it fails, the boiler may not ignite, experience flame lockouts, or poor modulation. It is compatible with the Cointra M 20 L and M 20 models, among others. A technician must confirm through diagnosis whether it needs to be replaced when these symptoms are detected or the ERROR3 occurs.
- Type of part
- Gas valves
- Status
- Refurbished
- Catalogue reference
- 7754 7558
- Warranty
- 1 year
Cointra boilers compatible with reference 7754 7558
Gas valve with reference 7754 7558. Two confirmed compatibilities: M 20 L and M 20.
Verified compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Cointra M 20 L | Cointra | Verified |
| Cointra M 20 | Cointra | Verified |
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 ref. 7754 7558 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 7754 7558. 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 that require diagnosis in the gas valve 7754 7558
The gas valve regulates and modulates the gas flow to the burner. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler does not ignite or has repeated ignition failures.
Cause: The gas valve does not open the gas flow to the burner when the control board commands it.
Check that the gas shut-off valve is open and that the inlet pressure is normal before replacing the gas valve.
- 02
The flame goes out during the normal operation of the boiler.
Cause: The valve does not maintain the minimum flow required to keep the flame lit.
Check the ionization electrode and its connection, because a fault there can also cut the flame and it is not the gas valve.
- 03
The gas supply to the burner seems irregular, the flame rises and falls on its own.
Cause: There may be dirt in the inlet filter of the gas valve or a fault in its internal regulation.
Check if the gas inlet filter is dirty before declaring the valve faulty.
Fault codes Cointra that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| ERROR3 | Fault related to the gas valve. | It may be due to the operation of the thermal cutouts in series with the valve, poor wiring, or a fault in the electronic components that act on it; verify by measuring the continuity of the thermal cutouts and the presence of power/control signal from the PCB to the gas valve. |
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 gas valve 7754 7558
- Catalogue reference
- 7754 7558
- Uniclima internal SKU
- VGCM20L
- Brand
- Cointra
- Type of part
- Gas valves
- Units in stock
- 7 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Frequently asked questions about the gas valve 7754 7558
Is this valve suitable for a boiler E 20 I or only for the M 20 L?
What fault of the E 20 L does this valve resolve?
