UPDATED A5 Panasonic technical handbook F 2025 - Flipbook - Page 150
Commercial Fault Codes Ð C Type Central Controller
Type
Alarm Code
Central
Controller
Issues
C01
C02
C03
C04
C05
C06
C12
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C28
C29
C31
150
Alarm Meaning
Duplicated setting of control address
Central control number of units mis-matched
Incorrect wiring of central control
Incorrect connection of central control
System Controller fault, error in transmitting comms signal, indoor or outdoor unit not working, wiring fault
System Controller fault, error in receiving comms signal, indoor or outdoor unit not working, wiring fault, CN1 not connected correctly
Batch alarm by local controller
Transmission error from adaptor to unit
Reception error to adaptor from unit
Duplicate central address in adaptor
Duplicate adaptor address
Mix of PAC & GHP type units on adaptor
Memory fault in adaptor
Incorrect address setting in adaptor
Host terminal software failure
Host terminal hardware failure
Host terminal processing failure
Host terminal communication failure
Reception error of S-DDC from host terminal
Initialization failure of S-DDC
Configuration change detected by adaptor
