Cointra E-20 I Honeywell (Yamatake) Air Pressure Switch Ref. CN76706664
Air pressure switch for Cointra boilers E-20 I and E-20 L. Manufactured by Honeywell (Yamatake), code C6065A1473:2 printed on the part, different from the catalog reference CN76706664. Set to 0.95 mbar, maximum 6 mbar. It checks the air pressure before allowing ignition. It is replaced when the boiler locks due to draft failure or does not ignite with the fan running.
VAT included
Consult via WhatsAppCointra boilers compatible with reference CN76706664
Pressure switch with reference CN76706664. Two confirmed compatibilities: E-20 I and E-20 L.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Cointra E-20 I | Cointra | Contrasted |
| Cointra E-20 L | Cointra | 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 ref. CN76706664 is the part 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 CN76706664. 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 pressure switch CN76706664 resolves.
The pressure switch controls the air or water pressure to authorize operation. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler attempts to ignite, the fan starts, but it stops without lighting the burner.
Cause: The pressure switch does not close the air contact, and the control unit interrupts the ignition cycle for safety.
Check that the silicone tubes of the pressure switch are not disconnected, bent, or have condensed water inside.
- 02
The display shows a fault code related to the draft or the pressure switch.
Cause: It's the typical warning when the control unit does not receive the air pressure signal within the expected time.
Check that the fan rotates freely and without any unusual noise before assuming it is the pressure switch.
- 03
The boiler shuts off by itself during operation, with the fan still running.
Cause: A pressure switch with an unstable contact can open during operation, and the control unit interprets this as a loss of draft.
Check the flue for any external obstruction (nest, snow, dirt) that might reduce the draft.
- 04
Ignitions that sometimes work well and other times stop halfway, with no clear pattern.
Cause: A microswitch with dirty or oxidized contacts switches irregularly depending on vibration or humidity.
Try turning it on several times in a row and note if it always fails at the same point in the cycle before replacing the part.
Fault codes for Cointra that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| ERROR2 | Fault due to issues related to the air pressure switch. | The air pressure switch does not switch when the fan starts due to lack of depression/draught, obstruction, or fault/wiring of the pressure switch itself; verify that it switches (continuity/manometer) when the fan starts and check silicone tubes and K10 selection/wiring. |
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.
Datasheet for the Cointra CN76706664 pressure switch
- Catalogue reference
- CN76706664
- Brand
- Cointra
- Type of part
- Pressure switches
- Units in stock
- 4 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- 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.
- component code
- C6065A1473:2
- manufacturer
- Honeywell (Yamatake)
- voltage
- 250V~
- capacitor
- 1.5(0.5) μF
- set pressure
- 0.95 mbar
- maximum pressure
- 6 mbar
- batch code
- 0208F
- CE code
- CE-0063AP3085/1
- manufacturing origin
- Made in China
- The code printed on the part (C6065A1473:2) is different from the catalog reference (CN76706664); the latter is Cointra's own numbering, not Honeywell's code.
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Cointra E-20 L Manual (PDF)Document © Cointra, provided as a technical reference.
Frequently asked questions about the pressure switch CN76706664
Is the pressure switch of the Cointra E-20 I manufactured by Honeywell?
Why does the part code C6065A1473:2 not match the reference CN76706664 for the Cointra E-20 I?
Is this pressure switch suitable for a Cointra E-20 L?
At what air pressure does the pressure switch of the Cointra E-20 I switch?
What fault indicates that the pressure switch of the Cointra E-20 I needs to be replaced?
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