Saunier Duval Thema Thelia Safety Valve Ref. 05148200

Saunier Duval boilers compatible with reference 05148200

Safety valve with reference 05148200. 11 verified compatibilities: Thema C 23 E and Thema C AS 23 E.

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 ref. 05148200 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 05148200. 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 that require diagnosis in the safety valve 05148200

The safety valve releases pressure when the circuit exceeds its setting. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The valve continuously purges water, whether it drips or not at the beginning.

  Cause: The internal seat does not close properly, either due to wear of the gasket or due to limescale buildup, which allows water to escape even when the pressure is normal.

  First, check the circuit pressure on the manometer: if it is above the usual level, inspect the expansion vessel before replacing the gas valve.

• 02

  Jump and bleed with the boiler cold, without anyone having touched anything.

  Cause: The spring or the seat of the gas valve is damaged and opens before reaching the 3 bar setting.

  Check that no filling valves are left open or leaking, as this also increases the pressure in the circuit.

• 03

  It can't hold the circuit pressure: it keeps rising and the gas valve doesn't activate.

  Cause: The mechanism has become stuck due to scale or lack of use and does not open when it should.

  If the valve has a manual bleed lever, operate it to see if it gets unstuck; if it doesn't release, do not force it any further.

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 Saunier Duval safety valve 05148200

Catalogue reference

05148200

Uniclima internal SKU

LVSISDTT

Brand

Saunier Duval

Type of part

Safety valves

Units in stock

4 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.

Setpoint

3 bar