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2. Detailed Settings Function
2. Detailed Settings Function
Selecting the DC fan motor tap (when setting from the PCB)
4-Way Cassette type (Type U1)
<Procedure> Stop the system before performing these steps.
Open the electrical component box cover, then check the indoor unit control PCB. (Fig. 2-5)
Connect the jumper connector (2P: yellow) which was supplied with the accessory to the correct connector pin
on the indoor unit control PCB according to the setting number which was confirmed in Table for DC Fan Motor
Tap Settings.
Setting No. (3) :
Then connect the jumper connector to the connector pin TP3 (2P: yellow) on the indoor unit control PCB.
Setting No. (6) :
Then connect the jumper connector to the connector pin TP6 (2P: white) on the indoor unit control PCB.
Ceiling type
<Procedure> Stop the system before performing these steps.
Open the electrical component box cover, then check the indoor unit control PCB. (Fig. 2-6)
Connect the jumper connector (2P: yellow) which was supplied with the accessory to the correct connector pin on
the indoor unit control PCB according to the setting number which was confirmed in Table 2-2 (Table of DC Fan
Motor Tap Settings).
If the setting No. is (1), then connect the jumper connector to the connector pin TP1 (2P: red) on the indoor unit con-
trol PCB.
If the setting No. is (3), then connect the jumper connector to the connector pin TP3 (2P: yellow) on the indoor unit
control PCB.
5
4-Way Cassette type (Type U2)
<Procedure> Stop the system before performing these steps.
Open the electrical component box cover, then check the indoor unit control PCB. (Fig. 2-6)
Change the DIP switch on the indoor unit control PCB in accordance with the setting number which was
confirmed in Table for DC Fan Motor Tap Settings.
Setting No.
DIP switch
ON
(1)
ON
(3)
ON
(6)
FAN-TAP
1 2 3
1 2 3
1 2 3
Fig. 2-5
Setting example
ON
ON
1
2 3
1 2 3
Fig. 2-6
5 - 26
VRF SYSTEMS Indoor Unit
1: OFF
2: OFF
3: ON
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