Daikin ALTHERMA HT ERSQ 014 V1 - C1 Indoor Unit: Failure of Transmission

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