Found system off ds2 flashing on outdoor unit board - low pressure lock out - reset system to remove lockout - checked system refrigerant balance found system refrigerant balance within manufacturer's specifications. Don't believe system is acting abnormally at this time. Recommended to keep an eye on system over the next couple of days. Customer would like to be quoted on addition of steam humidifier for heat pump system and would like to be quoted for comfort club for both heat pump systems. Quote to install thermostat with remote wireless sensor for downstairs system.