SIT 845 Sigma Gas Valve For Fagor FE-20E/1N - Code 0845061

Fagor boilers compatible with reference MU0809100

Gas valve with reference MU0809100. 12 verified compatibilities: FE-20E/2N and FE-20E/2B.

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. MU0809100 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference MU0809100. 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 gas valve MU0809100 resolves.

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, but the burner doesn't fully light up.

  Cause: One of the two solenoid valves (EV1 or EV2) is not opening and is not allowing enough gas to pass to the burner.

  Before replacing the gas valve, rule out that the blockage is coming from the flue gas evacuation or the ionization electrode, as they cause the same symptom.

• 02

  There is no gas or very little gas reaching the burner, even though you can hear the ignition attempt.

  Cause: The main solenoid valve gets stuck or does not open completely due to dirt or wear on the seat.

  Check that the main shut-off valve is fully open and that the gas inlet pressure is normal for the household.

• 03

  The flame rises and falls on its own, not adjusting well to the heat demand.

  Cause: The modulator (MD) of the gas valve is not properly dosing the gas flow to the burner.

  Check first if the problem occurs only in domestic hot water or also in heating; if it's only in one of the two, it's probably not the gas valve.

• 04

  The boiler locks out with a gas valve fault warning as soon as it starts.

  Cause: The control unit does not receive confirmation of the gas valve opening within the safety time and cuts off the gas.

  Perform a reset and note if the lockout always occurs at the same point in the ignition cycle before replacing the part.

Fault codes for Fagor that this part resolves.

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 gas valve Fagor MU0809100

Catalogue reference

MU0809100

Brand

Fagor

Type of part

Gas valves

Units in stock

3 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.

Manufacturer

SIT

Model

845 Sigma

SIT code

0845061

Place of manufacture

Made in Italy (Padua)

Gas

ALLGAS (multi-gas)

Maximum inlet pressure (Pi max)

60 mbar

Outlet pressure (Po)

1-37 mbar

EV1 coil

230V ~50Hz, class B

EV2 coil

230V ~50Hz, 2.8 VA, class J

Modulator (MD)

max. 17V DC, max. 165 mA

Ambient temperature

0/40°C

Internal mold number

2063AS4831