Daikin SM-12-012, Service Manual

Page: 6 / 54

Service Manual SM-Inverter_(i) 6
• Heating operation: Tr < Ts
ID-OD COMMUNICATION
- Master by outdoor unit.
- Indoor controller board will transmit signal to outdoor controller board every 0.5s. Outdoor unit will
response to indoor once the valid data is received.
- If the data communication line between indoor and outdoor disrupted for 15s continuously, compressor
will stop, OD fan stop with fan OFF timer. ID LED blinks error.
- If the communication resumes within 15s, error code is clear and compressor restarts after 3 minutes.
- If the communication does not resume after 15s, unit unable to restart and the error keep blinking.