Junkers Ceraclass Excellence ZWC 28-3 MFK Circulating Pump Ref. 87160113940
If you notice cold radiators, strange noises, or overheating in your boiler, you may need the Junkers Ceraclass Excellence ZWC 28-3 MFK circulator pump Ref. 87160113940. Manufactured by Grundfos, this pump is responsible for moving water through the heating circuit, ensuring proper circulation. When it fails, it can trigger fault code E9, indicating overheating, or d4, which signals an excessive temperature difference between supply and return. It is compatible with models from the Junkers/Bosch Ceraclass Excellence range, such as the ZWC 28-3 MFK, among others. It is recommended to replace it when there are circulation issues with the water.
VAT included
Consult via WhatsAppJunkers boilers compatible with reference 87160113940
Circulating pump with reference 87160113940. A proven compatibility: ZWC 28-3 MFK.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZWC 28-3 MFK | Junkers/Bosch Ceraclass Excellence | Contrasted |
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. 87160113940 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.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 87160113940. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the circulation pump 87160113940 resolves.
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 turns on but takes a long time to heat, or doesn't heat at all.
Cause: The pump does not move enough water, so the heat takes time to reach the radiators even though the burner is working well. In this model, if the speed is incorrectly selected, this can also happen.
Check the speed of the pump (I, II, or III) and increase it one level before considering replacing it.
- 02
There is noise or vibration in the pump while the heating is operating.
Cause: This is usually due to air in the circuit or scale in the impeller, rather than an electrical fault of the motor.
Bleed the circuit well before replacing the part.
- 03
After a long shutdown (for example, during the summer), the pump does not start or gets stuck.
Cause: The shaft gets stuck due to sediment and prolonged inactivity, which is common in pumps of this type.
Try to unlock the shaft manually and check that power is reaching the terminals before purchasing a new one.
- 04
Water is dripping from the pump body.
Cause: The internal mechanical seal wears out over the years and starts to allow water to pass through.
Confirm that the leak is actually coming from the pump body and not from a nearby fitting or bleed valve before ordering the spare part.
Fault codes from Junkers that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| E9 | The boiler has overheated and the temperature limiter has been activated. | If the circulation pump is not working properly, the water does not circulate correctly and overheats in the heat exchanger, activating the limiter and displaying the fault code E9. To check it, turn on the heating and verify that the pump is running and moving the water (check the temperature difference between supply and return and the current at the terminals). If necessary, bleed the system. |
| d4 | The temperature difference between supply and return is too high. | If the pump does not move the water or does so with little force, the flow temperature rises quickly compared to the return temperature, and the system shows fault code d4. Check for any abnormal temperature difference and inspect the pump (check the current at the terminals, whether it is spinning or blocked, and bleed if necessary). Also, check the bypass. |
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 Junkers 87160113940 circulation pump.
- Catalogue reference
- 87160113940
- Brand
- Junkers
- Type of part
- Pumps
- Units in stock
- 1 unit
- 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.
- Voltage
- 230V ~ 50Hz
- Condenser
- 2.5 µF
- Current and power by speed
- 0.29A/60W - 0.36A/80W - 0.42A/95W
- Degree of protection
- IP44
- Insulation class
- Class H (TF95)
- Maximum pressure
- 3 bar
- Efficiency
- Low Energy
Frequently asked questions about the circulator pump 87160113940
How many speeds does the pump of the Junkers Ceraclass Excellence ZWC 28-3 MFK have?
What reference replaces 87160113940?
What is the maximum pressure the pump of the ZWC 28-3 MFK can handle?
Is the number '590614 P107361877' marked on the part the reference for the pump?
What IP protection and insulation class does this pump have?
Spare parts related to Junkers Junkers/Bosch Ceraclass Excellence
