Came out today to check on a Lennox system that would intermittently shut down for about a hour then turn back on. Upon arrival the system was operating but shortly after the system shut down. I noticed an error code on the I comfort thermostat saying it lost communication with a component of the system. I came outside to look at the condenser not operating but by the time I got to it the system turned back on. I checked the boards at the condenser and air handler to see if there were any scorch marks or any wires disconnected. The boards and wiring are in good condition and wired properly. The drain and drain pan are both clear of any clogs. Checked both float switches and they are operating properly. I cannot find any reason as to why the thermostat lost connection with the outdoor unit. I went over some trouble shooting with PA over the phone but had no success. I advised the homeowner that chud will have to see it happen and it needs to happen for a longer period of time. The conde