Saunier Duval Opalia TF 14 E Water Valve Assembly Ref. S1215900

Saunier Duval boilers compatible with reference S1215900

Hydraulic group with reference S1215900. Four confirmed compatibilities: Opalia C 14 and Opalia C 14 G Cyclo.

Proven compatibility

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 S1215900 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference S1215900. If it is not visible, do not identify the part from its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms and faults that the hydraulic group S1215900 resolves.

The hydraulic group includes the valve, the by-pass, and the water connections. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The hot water comes out weak or with low pressure even though the tap is fully open.

  Cause: The hydraulic body houses the flow limiter, and if it becomes clogged with scale, it reduces the water flow before reaching the heat exchanger.

  First, check the network pressure and the inlet filter; if the flow improves when removing the filter, the problem is not in the hydraulic body.

• 02

  Water leaks appear at the bottom of the boiler, especially when turning on the domestic hot water.

  Cause: The seals of the hydraulic body lose tightness over the years and leak drops only under operating pressure, not at rest.

  Check if the leak occurs only when opening the domestic hot water tap or also when the boiler is off; this helps to locate the source before requesting the part.

• 03

  The water takes time to come out hot or the boiler struggles to "detect" that there is consumption.

  Cause: The mechanism that detects the flow of water is located in the hydraulic body, and with accumulated scale, it responds late or does not trigger the ignition.

  Bleed the nearest tap for a while to see if the start speeds up; if it remains just as slow, the fault points more towards the hydraulic body.

• 04

  There is a sudden change in water temperature while you are showering, from hot to cold or vice versa.

  Cause: If the internal passage of the hydraulic body is partially blocked, the mixture of cold and hot water ceases to be uniform.

  Check if the problem is related to the water hardness in the area or with the last time maintenance was performed using descaler.

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.

Hydraulic group data sheet Saunier Duval S1215900

Catalogue reference

S1215900

Brand

Saunier Duval

Type of part

Hydraulic units

Units in stock

7 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.

Body material

Brass