Found wiring on zone board to be wired incorrectly, with reversing valve wired into W2 on the board instead of O causing heat pump to be stuck in heating mode. Corrected wiring, then found primary drain line clogged, causing float switch to kill power to condenser. Cleared drain line and confirmed flow with customer supplied bleach. Found unit slightly low on 410A, added 2 pounds to achieve correct operating pressures. No other mechanical failures found at this time.