17
English
If the switch is later detected closed for 30 seconds, normal op-
eration resumes and the error message is removed. (The switch
is closed as part of the default factory setting). The error will be
maintained in the equipment’s fault history.
See Figure 25.
TB5
SWITCH
ALARM
TB4
Figure 25
•
Never use auxiliary alarm function of gas furnace’s PCB.
The function may not operate properly.
8.9
CENTRALIZED CONTROL
For centralized control, it is necessary to designate the group
No. For details, refer to the manual of each optional controller
for centralized control.
9.
FIELD SETTING
Field settings may have to be performed using the remote
controller, depending on the type of installation.
1.
Make sure the electric component box covers are closed on
the indoor and outdoor units.
2.
Depending on the type of installation, make the field set-
tings from the remote controller after the power is turned
on, following the “Field Settings” manual which came with
the remote controller.
•
The settings can select “Mode No.”, “FIRST CODE NO.” and
“SECOND CODE NO.”.
•
Field settings are normally applied to the entire remote con-
trol group, however if individual indoor units in the remote
control group require specific settings or for confirmation that
settings have been established, utilize the “Mode No.” in pa-
renthesis.
•
The “Field Settings” included with the remote controller lists
the order of the settings and method of operation.
•
Make sure the customer keeps the “Field Settings” manual,
along with the operating manual, in a safe place.
9.1
SETTINGS WHEN USING THE OPTIONAL
REMOTE SENSOR
This product does not include an air inlet thermistor. It uses the
remote controller thermistor to measure the room temperature.
For this reason, it is necessary to install an optional remote sen-
sor in the following cases:
•
When the remote controller will be installed at a location
where it cannot accurately measure the indoor temperature.
•
When using a remote controller without a built-in thermistor
(simplified remote controller, wireless remote controller, no
remote controller).
When using an optional remote sensor, change the settings
as described Table 5:
ROOM TEMPERATURE
SENSOR SELECTION
MODE
NO.
FIRST
CODE NO.
SECOND
CODE NO.
To use only the remote sensor
02
03*
2
To use only the remote controller
thermistor
10 (20)
*Factory Set
Table 5
Indoor units settings must be changed to Available as per Table
6 when group remote control is used.
Indoor units not using group remote control may remain on fac-
tory settings.
REMOTE CONTROLLER THERMISTOR
(GROUP CONTROL ONLY)
MODE
NO.
FIRST CODE
NO.
SECOND
CODE NO.
Not Available
01*
Available
02
*Factory set
10 (20)
6
Table 6
Setting Summary
Without Group Control With Group Control
Without Remote sensor
10(20)-2-03 (*)
10(20)-6-01 (*)
10(20)-2-03 (*)
10(20)-6-02
With Remote sensor
10(20)-2-02
10(20)-6-01 (*)
10(20)-2-02
10(20)-6-02
(*) Factory Setting
Table 7
9.2
REMOTE CONTROL SETTING (T1, T2)
Forced Off, ON/OFF operation and System/Equipment Protec-
tion can be selected by selecting the SECOND CODE NO. as
shown in Table 8.
EXTERNAL ON/OFF INPUT
MODE
NO.
FIRST CODE
NO.
SECOND
CODE NO.
Forced Off
01*
ON/OFF Operation
02
System/Equipment Protection
03
*Factory set
12 (22)
1
Table 8
Input A of FORCED OFF, ON/OFF and SYSTEM/EQUIPMENT
PROTECTION operates as shown in Table 9.
