Name: Saunier Duval Themafast Condens F 24 Circulating Pump Motor Ref. 0020087276
Brand: Saunier Duval
SKU: BCTCF24
Price: 75 EUR
Availability: InStock

Question 1

How do I know if this circulating pump is the one for my boiler?

Accepted Answer

Verify the reference 0020087276 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.

Question 2

What is it used for?

Accepted Answer

The circulating pump circulates the water through the heating circuit.

Question 3

Noise, water not circulating, or cold radiators?

Accepted Answer

Typical symptoms: humming, seized rotor after a long stop, or radiators that do not heat evenly.

Question 4

Which models is it suitable for?

Accepted Answer

Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.

Question 5

Installation and recommendations

Accepted Answer

Bleed the air from the circuit and the pump; check the pressure at 1–1.5 bar with the boiler cold.

Question 6

What does refurbished mean and what coverage does it have?

Accepted Answer

Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Question 7

What does fault code F.22 mean in Saunier Duval?

Accepted Answer

Safety shutdown: lack of water If the pump motor is blocked/faulty or disconnected (wiring/PCB), there is no circulation and the control interprets a lack of water. Check pump start-up in test P.0, presence of PWM/230 V voltage, and motor continuity/consumption.

Question 8

What does fault code F.23 mean in Saunier Duval?

Accepted Answer

Safety shutdown: excessive temperature variation A pump without flow (blocked or with reduced power) causes an excessive ΔT flow/return. Check pump rotation/speed, air bleeding, and ΔT in the heat exchanger; check PWM/230 V control.

Question 9

What does the fault code F.24 mean in Saunier Duval?

Accepted Answer

Safety shutdown: temperature rise too fast If the pump is stopped or underperforming, the flow temperature rises very quickly as the water does not circulate. Check the power supply and rotation of the pump and bleed the system; if it does not respond in P.0, replace the pump.

Question 10

What does the fault code F.75 mean in Saunier Duval?

Accepted Answer

Pump error, lack of water. Upon starting, the electronics expect a pressure variation when the pump starts; if the motor does not turn or does not generate flow, there is no change and F.75 appears. Check pump test and pressure change, voltage to the pump, and condition of the impeller.

Code	What does it mean?	Cause and diagnosis (this part)
F.22	Safety shutdown: lack of water	If the pump motor is blocked/faulty or disconnected (wiring/PCB), there is no circulation and the control interprets a lack of water. Check the pump start in test P.0, presence of PWM/230 V voltage, and motor continuity/consumption.
F.23	Safety shutdown: excessive temperature variation	A pump without flow (blocked or with reduced power) causes an excessive ΔT flow/return. Check the pump's rotation/speed, bleed air, and ΔT in the heat exchanger; verify PWM/230 V control.
F.24	Safety shutdown: temperature rise too fast	If the pump is stopped or performing poorly, the flow rises very quickly as the water does not circulate. Check the power supply and rotation of the pump and bleed the system; if it does not respond in P.0, replace the pump.
F.75	Pump error, lack of water	Upon start-up, the electronics await a pressure variation when the pump starts; if the motor does not turn or does not generate flow, there is no change and F.75 appears. Check the pump test and pressure change, voltage to the pump, and the condition of the impeller.

Saunier Duval Themafast Condens F 24 Circulating Pump Motor Ref. 0020087276

Key Data

Themafast Condens

Themafast NOx

Isofast Condens

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