Johnson Controls DHR18CSB21S, Service Manual

Page: 34 / 93

Service Manual
2
5
Note:
①
If the unit is not connected to outdoor ambient temperature sensor, display of outdoor
ambient temperature will be shielding after energizing for 12hr.
②
If there is malfunction of outdoor ambient temperature sensor, display of outdoor ambient
temperature will be shielding after energizing for 12hr.
8
.8
Error Code Recall
Under off or on state of the unit, continuously press Function and ▼ buttons for 5s to view
recent
error codes.
When recalling error codes, you will see "00" in the set temperature area of the controller.
Press ▲
and ▼ buttons to view the
five most recent error codes, if any
.
The error code(s) will be displayed in the
timer section of the controller.
The
fifth
displayed
code is the most recent
.
8
.9
Programming
Function
Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the
programming
menu. Press
Mode button to adjust the setting items and press ▲ or ▼ button to set the
actual value.
8
.9.1 Setting ambient temperature sensor (dual ambient
temperature sensors function)
In the programming area
, press Mode button to adjust to “00” in temperature displaying
area of
controller
.
P
ress ▲ or ▼ button to adjust. There are
three
selections:
(1)
If the room temperature is to be read at the return air of the unit then the setting value would be
"
01
"
.
(2)
If the room temperature is to be read at the wired zone controller, then the setting value would
be "02".
(3)
To read the the room temperature at the indoor unit return
in cooling, dry and fan mode
, and/or
to read the room temperature at the wired zone controller in heating and auto modes, select "03".