Customer had us out again because the compressor would not turn off after it had achieved its temperature. Upon investigation, Troy found that the zone board that was in place is faulty. We determine this by measuring the 24 V between the common and yellow wire on the thermostat side of the zone board for the top thermostat in the bottom thermostat and we’re not getting 24 V. On the other side of the board where the equipment is, we were getting 24 V coming from the equipment side so that indicated the failure was inside of the zone board. Technician visited with tenants and sent the estimate to the owners. Spoke with the owners and they are just deciding whether or not they would like to also replace the float switch or not.
