McQuay model R-410a flat top unit. I live in NYC so water source heat pumps are standard in elevator buildings. I am in a 23 story apt building. The problem I have is that I am constantly having to reset the unit. It will run for two cycles at most. After that the unit will not kick on even though the thermostat shows the temp is lower than where it is set. The fan wont even turn on. This requires me to turn the breaker off and reset it. It has neen over a month and they have replaced the heat pump, circuit board, bled the lines.