I have a 72" powertach blade (plow for us easterner) the temps were low about 10 degrees but the load on the unit was low because the snow was light. The plow just stopped working after a push. waited for the override to reset. nothing. I have checked the solenoid (working, pump working and full of oil and replaced the 3 -40 amp relays in the wiring harness. stilll nothing. The makers of the blade are sending me a new wiring harness, with one relay upgraded to 40 amp. My problem is that Power Place in Rockaway NJ doesn't offer a clue or has an idea what went wrong. they sell the item but I have to explain to the parts guy each time what accessory I have. A 72 plow id not a vanity mirror and I would expect the dealers service dept. to have at least a small understanding of the unit they sold to m . Very frustrating with snow on the way.