Johnson Controls YVAHP072B31S, Service Manual

Page: 739 / 1796

Condition
Condition for LED ON
and its contents
Condition for indicator OFF ERROR LED
7-Segment
LED
Priority for
indication
Software
Start up Error
Error is detected on the software
No error is detected on the
software.
ON
1
Memory
Check Error
(FlashROM)
Error is detected during
FlashROM check FlashROM Check is properly
completed.
ON
2
Checking
Memory
(FlashROM)
While FlashROM checking FlashROM Check is completed. OFF
3
Memory
Check Error
(SDRAM)
Error is detected during SDRAM
check SDRAM Check is properly
completed.
ON
4
Checking
Memory
(SDRAM)
While SDRAM checking SDRAM Check is completed. OFF
5
Memory
Check Error
(EEPROM)
Error is detected during EEPROM
check EEPROM Check is properly
completed.
ON
File System
Error (UURULVGHWHFWHGGXULQJ¿OH
system check
File System Check is properly
completed.
ON
7
Application
Startup
Immediately after startup of the
application by turning the power
ON with self check mode or
normal mode.
1 second after the condition on
the left occurred. ON for
1 second
8
H-LINK
Initialization
Error
Error is detected while H-LINK
communication port initialization
after application startup by turning
the power ON.
Initialization of H-LINK
Communication port is properly
completed.
ON
9
Inner
Database
Error
Error is detected during inner
database check while system
initialization after application
startup by turning power ON.
Inner data base checking is
properly completed.
Repeated
ON/OFF for
1 second each
10
System
Initialization
While system initialization process
after application startup by turning
the power ON.
System initialization is completed. OFF
11
Air
Conditioners
Connection
Check Error
Communication check cannot be
completed within 20 minutes after
application start up by turning
power ON with normal mode
setting.
Connection check with air
conditioners is completed.
WLPHÀDVKLQJ
after OFF for
1 second
12
Checking
Connection
with Air
Conditioners While checking connection with
Air Conditioners after application
startup by turning power ON with
normal mode setting.
Connection check with air
conditioners is completed.
WLPHÀDVKLQJ
after OFF for
5 seconds
13
Air
Conditioners
Connection
Error
Error is detected in communication
with one or more air conditioners
after connection checking. Communication with all detected
air conditioners is in a stable
state. WLPHÀDVKLQJ
after OFF for
3 seconds
14
In Proper
Operation*
None of the above meets the
condition of the adapter after
application startup by turning
power ON with normal/self-
checking mode setting.
Condition of this adapter meets
one or more conditions above.
OFF
15
Table 8.2: Contents and Indication of ERROR LED and 7-segment LED
* After indicating “C0” for checking connection, the 7-segment LED will display “00” upon entering the normal operation
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check (upon recovery from power failure), “0E” will be displayed on the 7-segment LED indicating a connection error
after displaying “00” for three minutes.
Refer to Table 8.5: Troubleshooting.
Service Manual
1-723
INSTALLATION