I got this error two days before my HVAC stopped working completely. I'd say let them... and avoid the very cold until they do.I'm in Colorado with a July 2020 MYLR and the heat pump has always worked great. Yesterday got a VCFRONT_a531 error. The SC's estimate says they are going to replace both the compressor and super manifold. That seems intense. The heat is still working somewhat (I'm not sure exactly how 'bad' it is).