14
7-6 INITIAL SETTING
After finishing wiring work, set the followings if necessary.
1. COOL/HEAT temperature difference setting switch (Set indoor unit remote controller to field
setting mode.)
•
Use to change the temperature difference upon occurence of which to start cooling and heating in the
automatic COOL/HEAT mode.
Settings are made from the remote controller of the indoor unit connected to the BS unit. The unit must
be in “
Field setting mode
”. Make settings as explained in
“Field setting”
(provided with the remote
controller).
The second code No. is set to 1 (0°F) when the unit is shipped from the factory.
2. Remote controller change over switch (SS1, SS2)
•
When using COOL/HEAT selector, turn this switch to the BS side.
When using cool/heat selector, connect to the terminal A, B and C on the EC of the electric parts box.
8. TEST OPERATION
Refer to the installation manual of the outdoor unit.
•
The operation lamp of the remote controller connected to the indoor unit will flash when an error occurs.
Check the error code on the liquid crystal display to identify the point of trouble. An explanation of error
codes and the corresponding trouble is provided in “CAUTION FOR SERVICING” of the indoor unit.
Mode No.
First code No.
Second code No.
COOL/HEAT temperature
difference (°F)
12 (22)
4
1
0
2
1.8
3
3.6
4
5.4
5
7.2
6
9.0
7
10.8
8
12.6