For unit PAC YUNA 20H (7394330): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 28H (7394331): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 28H (7394332): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 28HT (7394333): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 33H (7394334): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 33HT (7394335): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 50H (7394336): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 50HT (7394337): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 65H (7394338): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 65HT (7394339): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 80HT (7394340): *If communication failure, replace the transmitter thermostat too 7299350 For unit PAC YUNA 80HT (7394341): *If communication failure, replace the transmitter thermostat too 7299350