Junkers Euromaxx ZWC Grundfos UPS15-60 RLE Circulating Pump Ref. 8716771427
Circulating pump for the boiler circuit, manufactured by Grundfos (model UPS15-60 RLE) although the outer casing is branded Bosch. It is installed in Junkers Euromaxx ZWC/ZWSE and NGVM24-5 boilers. It is replaced when it does not start, makes noise, or the boiler stops heating. Catalog reference 8716771427, equivalent to the one engraved on the motor, 8716771386.
Spare parts related to Junkers Junkers Euromaxx ZWC
Junkers boilers compatible with reference 8716771427
Circulating pump with reference 8716771427. Compatibility confirmed with two independent sources: ZWC 24-1 MF2A. Verify the printed reference on your part before purchasing.
Compatibility confirmed
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZWC 24-1 MF2A | Junkers Euromaxx ZWC | Confirmed · 2 sources |
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. 8716771427 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.
- Locate the reference printed on the body of the circulating pump you have installed: it should indicate 8716771427.
- Check your boiler model on the nameplate and look for it in the list of compatible models on this page.
- Compare the connections and the body with the original part before installing.
- If you have any doubts, send us a photo of the screen printing via WhatsApp and we'll confirm it for you before you purchase.
Symptoms and faults resolved by circulator pump 8716771427
The circulating pump circulates the water in the heating circuit. These are the typical symptoms and what to do:
The pump emits a humming noise but the shaft does not move.
Cause: The rotor is seized, something typical if the boiler has been inactive for several weeks.
With the boiler disconnected, try turning the shaft by hand using the front screw of the motor; if it gives and turns, test the installation before purchasing the spare part.
The radiators are not heating even though the burner ignites and turns off normally.
Cause: The water is not circulating because the impeller is not spinning or there is air trapped in the circuit.
Bleed the radiators and the pump's own bleeder before concluding that the circulator is faulty.
There is a constant vibrating or gurgling noise in the pump area.
Cause: It is usually air trapped in the impeller or cavitation due to low pressure in the system.
Check the circuit pressure on the pressure gauge: if it is below 1 bar, adding water may eliminate the noise without touching the pump.
There is moisture or dripping between the motor and the pump body.
Cause: The mechanical seal has worn out and no longer seals properly.
Locate if the leak is coming directly from the shaft or from a nearby seal: only shaft wear justifies replacing the entire pump.
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 Junkers circulating pump 8716771427
- OEM reference
- 8716771427
- 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.
- Model
- UPS15-60 RLE
label - Reference engraved on the motor
- 8716771386 (Grundfos)
label - Part number (P/N)
- 59806402
label - Nominal voltage
- 230V ~ 50Hz
label - Condenser
- 2.5 µF
label - Protection rating
- IP44
label - Thermal class
- H (TF 95)
label - Maximum pressure
- 3 bar
label - Power speed 1
- 45 W (0.21 A)
label - Power speed 2
- 75 W (0.34 A)
label - Power speed 3
- 95 W (0.41 A)
label
- The outer casing bears the BOSCH brand, but the motor is identified with the GRUNDFOS logo and numbering: the actual manufacturer of the part is Grundfos, not Bosch.
- The reference published in the catalog (8716771427) does not match the one engraved on the motor's label (8716771386). A medium confidence arbitration considers them the same pump (Grundfos UPS15-60 RLE, P/N 59806402); check your part code before ordering.
- There is no additional technical data beyond what is read on the label itself; no external source has been located.