We have a new customer, ThermoPride HAF with a Beckett AF. Unit is approximately 6 years old.
Our first call to them, 4 weeks ago, was a no heat call. We found at first the cleancut pump seized. Also the motor was bad, assuming from the bad pump. However unlikely both bad at the same time, it was "plausible".
We replaced all bad parts, did a complete burner servicing/ tune up and cleaning of the unit.
Four days later, another no heat call. The pump was seized again. We noticed a "glazing on the filter element and on the pump strainer.
Long story short, we were told by the landlord, they had previously purchased bio fuel.
They think grade B-20. But they are not really sure what grade bio fuel.
On Halloween, another no heat call. We found the burner off on lockout. the pump was not seized, but very stiff to rotate shaft. After a few pushes of the wheel, it spun freely and the burner ran as normal.
Also, each time we go there, we of course change the filter, strainer & nozzle. Noticing this glazing.
Today, yet another service call, and again a seized pump.
Now we have seen bio fuel before, not too many times, as we are told oil companies charge more for it, so I believe most people pass on it for price reasons.
But does anyone have any info or assistance or advice for us on this. This is really a problem and a huge pain in the butt now.
There has to be some solution that we are nor aware of.