Honeywell Gas Valve for Cointra Edyco ED 21 EI
The Honeywell gas valve for Cointra Edyco ED 21 EI regulates the gas flow to the burner according to the indications of the boiler's PCB. If it malfunctions, the boiler may fail to ignite, experience flame lockouts, or have poor modulation. This valve is compatible with several models, including Cointra ED 21 EI, ED 21 I, EDYCO ED-21, SP 21 EI, and SPI 21 EI, among others. A technician must confirm through diagnosis whether it needs to be replaced if symptoms of a fault are detected or if the fault codes A09, A16, F50, or A62 appear.
- Type of part
- Gas valves
- Status
- Refurbished
- Catalogue reference
- 9158878
- Warranty
- 1 year
Cointra boilers compatible with reference 9158878
Gas valve with reference 9158878. Six confirmed compatibilities: 21 EI and 21 I.
Verified compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Cointra 21 EI | ED | Verified |
| Cointra 21 I | ED | Verified |
| Cointra ED-21 | EDYCO | Verified |
| Cointra 21 EI | SP | Verified |
| Cointra 27 EI | SP | Verified |
| Cointra 21 EI | SPI | 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 ref. 9158878 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 9158878. 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 9158878
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 tries to ignite, you can hear the click of the pilot or the igniter, but the flame does not light.
Cause: The valve does not allow gas to flow to the burner even though it receives the opening command from the control board.
Make sure that the gas shut-off valve is fully open and that there is no air in the system before changing the gas valve.
- 02
The flame lights up for a moment and then goes out immediately, as if it cuts off by itself.
Cause: The valve coil does not keep the electromagnet activated, and the gas flow shuts off prematurely.
Check the ionization electrode and its wiring; a poor flame signal also shuts off the valve for safety.
- 03
A lockout due to lack of flame appears, and the boiler needs to be reset frequently.
Cause: The gas valve opens with a delay or incompletely, and the control unit does not detect the flame in time.
Note the exact code displayed by the boiler and compare it with the manual before assuming it's the gas valve.
- 04
There is a slight smell of gas near the boiler when it is turned off.
Cause: The valve does not seal the gas flow completely at the end of the cycle.
Ventilate the area, close the main gas valve, and do not use the boiler again until it has been checked.
Fault codes Cointra that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| A09 | Gas valve anomaly | The gas valve may be faulty or have interrupted actuator/wiring, preventing its opening or modulation; check the continuity of the wiring and power supply to the actuator and ensure that the valve opens on demand. |
| A16 | Gas valve anomaly | This symptom may be related to the part, but it does not confirm that it is faulty. A technician must check the equipment and its inspection according to the manual before deciding on a repair or replacement. |
| F50 | Gas valve anomaly | Modulating actuator error (wiring interrupted) or faulty valve; check continuity of the actuator/coil and control voltage, and replace the valve if it does not respond. |
| A62 | There is no communication between the control board and the gas valve. | The valve may be faulty or not responding to the signal from the control board; check connectors and wiring between the PCB and the valve, presence of control signal, and replace the valve if it does not communicate. |
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 9158878
- Catalogue reference
- 9158878
- Uniclima internal SKU
- VGED21EI
- 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
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Manufacturer
- Honeywell
Frequently asked questions about the gas valve 9158878
Who manufactures the gas valve for the Cointra Edyco ED 21 EI?
Is this valve suitable for the Cointra SP 27 EI?
Spare parts related to Cointra ED
