Troubleshooting by Indication on the Remote Controller ESIE09-05
172 Troubleshooting
3.7 “C1” AHU: Failure of Transmission (Between AHU PC
Board and Fan PC Board)
Remote
Controller
Display
C1
Applicable
Models
FXMQ40~125P
Method of
Malfunction
Detection
Check the condition of transmission between indoor PC board (A1P) and PC board for fan
(A2P) 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 fan
(A2P).
Malfunction of indoor PC board (A1P).
Malfunction of PC board for fan (A2P).
External factor, such as instantaneous blackout.
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