Boiler Pump

[Ki23]

Hello all,
I had a Lockinvar Knight 085 installed last year and it's been working great. It appears as though my primary pump keeps starting/turning off for no reason. Even when the Tstats are not calling for heat, it makes a banging sound and the pump gets really hot. I have even shut the entire boiler down and the pump still makes the noise. The only way I can get it to stop is to kill the power to boiler/pump and then it obviously stops. I have a video but it won't let me post without a URL.

Any ideas?

 

[Fitter30]

Model of the boiler a whn 085? There is timer for post running normally set at 60 seconds and it's adjustable also under operational info C shows if pump is calling or not.

 

[Sponsor]

 

[Ki23]

Model of the boiler a whn 085? There is timer for post running normally set at 60 seconds and it's adjustable also under operational info C shows if pump is calling or not.

That is the correct model number. I’m not familiar with operational info C. What are you referring to?

 

[Paulypfunk]

Possibly an intermittent short in your wiring somewhere. Do you have high voltage and low voltage wiring run in the same conduit? You might be getting ghost signaling.

 

[Fitter30]

That is the correct model number. I’m not familiar with operational info C. What are you referring to?

Page 72
https://s3.amazonaws.com/s3.supplyhouse.com/product_files/WHN085-Install.pdf