Vaillant VPAR-5 Pump Rotor Replacement: Compatible Models, VC186/3-5 EcoTEC Plus Issues & Tips

Ladies and Gentlemen,
Such a thing happened - the Vaillant VC186 \ 3-5 EcoTEC plus stove, after 9 years of operation (without maintenance, my fault), began to fail. I recently replaced the main exchanger (yes, I know it's due to lack of maintenance), quite a nice job. By the way, I decided to clean everything and review everything I can. Actually, everything is in good shape, except the pump .. The impeller has axial runout, it will be 5mm. This makes the rotor very noisy and sometimes jamming of the rotor itself.
Nothing new.
Visually, the VPAR-5 pump is similar to Wilo or Grundfoss (in fact they all look similar). Certainly, Vaillant does not produce these pumps itself, and the manufacturer, in turn, does not produce a "special" model, but brands something he already has - in this case Vaillant.
Hence my question - is there any pump that has the same rotor? In my pump, the plastic of the turbine is clean, the winding is whole, not swollen, you just need to change the rotor. Does anyone know anything? I saw the info somewhere that this is Wilo, but without any details. It looks more like Grundfoss than Wilo.

Hello.
Maybe a colleague managed to establish something? Exactly the same thing happened to me, and the days of the original rotor are numbered.
greetings

And I have this problem.
I found something like this:
http://hydroit.pl/silnik-serwisowy-do-pompy-vaillant-vpar5-wilo-p-715.html
I just don't know if it's available yet, I'm waiting for a response from the store
Maybe from some other wilo pump you could move the rotor?

Buy a regular electronic wilo and you'll be fine, grundfos has a different screw spacing and a different size of the allen. I changed the engines several times and it was always ok, as long as the brand was correct.

How about the connection? There are a few veins in the original one

there you probably have a zero protection phase without pwm speed regulation

Pro have a single-stage pump and a 3-wire cable. Plus it has a two-stage (electric switching from the board) and a 5-wire cable.

If there is a pump in the boiler without power regulation, i.e. it has the usual 230V power supply with a 3-wire cable, I would see if the Omnigena Omis 25-60 pump with 100W power for about PLN 90 would physically fit.
As a cheap replacement until the boiler is dying, it should be sufficient.

I have 5 wires in the boiler. Yellow, brown, and blue are probably power. And there are also black and white.

as kz61 wrote, you have a two-stage pump controlled through the boiler MENU.
In my old Vaillant VUW240 / 2-5 I have a 2-speed pump but gear selection is done with a mechanical switch on the pump housing.
For this reason, the selection of the pump power has nothing to do with the boiler MENU, so I can safely use as a replacement for the aforementioned Omis 25-60, because the boiler's main board only gives 230V power for the pump at the right moment and it's all its task in terms of pump control.

Although I would try to determine if it would be possible to connect an ordinary pump and possibly select its power with a mechanical switch, but this would require a practical test, if the boiler would not give errors then, which would prevent its correct operation.

Hi. I bought a complete rotor with a Wilo coil (Hydroit, this one for PLN 250), when I am at home, I will write which model. The seller blurred rather carelessly It is a four-speed pump, from which the original connection is removed and the one from the boiler pump is inserted. Two gears are then in operation, selected by the controller. T.

I would measure the tensions and leave it disconnected from the second gear

Qdlaty78 wrote:

Hi. I bought a complete rotor with a Wilo coil (Hydroit, this one for PLN 250), when I am at home, I will write which model. The seller blurred rather carelessly It is a four-speed pump, from which the original connection is removed and the one from the boiler pump is inserted. Two gears are then in operation, selected by the controller. T.

Great, I would be grateful

The photos show the RS 25 / 60r or the RS 30 / 60r

Added after 18 [hours]:

I checked the pump on my stove. WILO RS 25 / 60r.