Johnson Controls YVAHP072B31S, Service Manual

Page: 655 / 1796

Service Manual
1-639
INSTALLATION
No. Condition Items to be Checked Action
1 Any Run command issued
from this system does not
affect the air conditioners or
remote controllers. Is the S23 alarm on? A communication error has occurred on the
LAN between the management computer
and the adapter. Check if the LAN is
wired correctly, and power to the hub and
adapter.
Is the S20 alarm on? Free space is less than 1GB. Clear the
memory to ensure there is a margin of 1GB
of space or substitute the computer with
another with larger memory space.
Is the S21 alarm on? There is a data-writing failure on the
management computer hard drive.
Substitute this computer for a different one
if this error reoccurs.
Are any of the following alarms
tripped?
60, 61, 64, 65 A communication failure has been occurred
on the H-LINK. Check to see that the
power to the air conditioners is ON, and
that wiring and, communication status is
normal.
Is the air conditioner in [Stop]
or in [Emergency Stop] mode
by the external input from the
adapter?
Deactivate the external input signal.
Is the RC group correctly
registered? RC groups must be allocated to one group
number between “1-160”. If “O” is shown,
allocate one number from “1-160”.
Did the connection of the RC
change such as in the removal
of the RC? To modify the connection to the RC,
execute it while the power to the AC is
OFF. If the modi
¿ cation is performed while
the AC is ON, turn the power OFF once,
then turn the power back ON. Then click
[Connection check] in [Settings] > [Unit
register] of the management software.
Is [Stop] or [Emergency stop]
set in [Ext. input] AND the
adapter is receiving either
signal? The external input signal has a precedence
when the stop signal is transmitted and
received. Deactivate the external input
signal.
Is the management computer
clock more than one hour
ahead or behind the clock for
the adapter? Set the clock so that the time difference
shall fall within 5 minutes. Go to [Settings]
> [Network register], to synchronize the
clock on the adapter with that of the
management computer.
NOTICE:
To check the adapter clock, follow the
procedure described below.
(a) Go to [Start] > [All programs] >
[Accessories] > [Command Prompt]
(b) Enter [telnet] and IP address of
the adapter (for example, telnet
192.168.0.3).
(c) Enter [root] next to login:
(d) Enter [harc] next to Password:
(e) To display the current time and date
setting for the adapter, type in [date].
(f) To exit the program, click [exit].
Monitor (Controlling)