Arrived onsite to continue trouble shooting the system not properly communicating. As per the manufacturer’s troubleshooting instruction. Brought the communicating interface thermostat to the outside unit. Connected the wires to the thermostat. The thermostat could not find the inside unit. It has been determined that the thermostat can find the inside unit from inside. It cannot find the outside unit from inside and it cannot find the inside unit from outside. Based on the manufacturer’s guidance, It has been determined that the communicating wire will need to be replaced with a shielded communicating wire. This wire runs under the decking and is partially buried. May recommend adding wire protecting conduit.
