C1" Indoor Unit: Failure Of Transmission - Daikin ALTHERMA HT ERSQ 011 AA Service Manual

Troubleshooting by Indication on the Remote Controller
"C1" Indoor Unit: Failure of Transmission (Between Indoor unit
3.6
PC Board and Control PC Board)
C1
Remote Control
Display
Subcode 0
Applicable Models
All indoor unit models
Method of Check the condition of transmission between indoor PC board (A1P) and PC board for control (A3P)
Malfunction using computer.
Detection
Malfunction When normal transmission is not conducted for certain duration.
Decision Conditions
 Connection defect of the connecter between indoor PC board (A1P) and PC board for control (A3P)
Supposed Causes
 Malfunction of indoor PC board (A1P).
 Malfunction of PC board for control (A3P).
 External factor, such as instantaneous blackout.
148
(communication problem).
ESIE09-08A
Troubleshooting