Grundfos Circulating Pump Saunier Duval Isofast C 35 E Ref. 05732500

Saunier Duval boilers compatible with reference 05732500

Circulating pump with reference 05732500. Eight confirmed compatibilities: C 35 E and C 35 E1.

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. 05732500 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 05732500. 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 circulator pump 05732500

The circulation pump circulates the water in the heating circuit. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The boiler is not heating the water for heating even though the burner seems to ignite.

  Cause: The circulator does not start, so the hot water does not circulate to the radiators.

  Check if you hear or feel any vibration in the body of the pump when turning on the heating; if it is completely silent and cold, the motor is not starting.

• 02

  A vibration or rattling noise appears in the pump area.

  Cause: It usually comes from trapped air in the circuit or a bearing worn out from use.

  Bleed the heating circuit before replacing the pump; if the noise doesn't change after bleeding, internal wear is more likely.

• 03

  The heating works but it takes longer to warm up the house than before, as if it's lacking power.

  Cause: When the impeller loses efficiency, the circulator continues to spin but does not reach the necessary flow for the entire circuit.

  Compare if the problem is general throughout the entire installation or only in the areas farthest from the boiler; if it is general, it points more towards the pump.

• 04

  There is moisture or dripping on the pump body.

  Cause: The shaft seal wears out over the years and gradually allows water to leak to the outside.

  Dry the area and check again after a while of operation; if the moisture reappears right at the shaft, it confirms the wear of the seal.

• 05

  The boiler operates for a few minutes and then goes into a lockout related to the heating.

  Cause: Without sufficient flow, the control unit interprets that there is a circulation fault and shuts off the service for safety.

  Check that the circuit's stop valves are open and that there is no lack of water pressure in the circuit before replacing the circulator.

Fault codes Saunier Duval that require diagnosis

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 05732500 circulation pump.

Catalogue reference

05732500

Uniclima internal SKU

BCSDIC35E

Brand

Saunier Duval

Type of part

Pumps

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

Grundfos

Code (P/N)

59716503

Production code (PC)

9942

Voltage

230 V ~ 50 Hz

Condenser

2.5 µF

Protection

IP 44

Thermal class

TF 95 / Class H

Maximum pressure

6 bar

Current

0.45 A

Absorbed power (P1)

110 W