Evaporator fan motor will intermittently run for around 5 seconds, even when thermostat is in the off position ( no call for heat or cool ). This may occur several times a day and I have several units that do this. Is this normal for these units and if not what could be wrong? Control board? Thanks.
How long has the themostats been in the off cycle when the evap. motor turns on ? All day or just finish a cycle?
T-stats are in the off position all day.