4. Service procedures
1
2
3
4
5
IV-51
(11) Items to Check Prior to Test Run
(1) Turn on the power supply switch more than 5 hours before in order to charge the crank
case heater.
(2) Fully open the outdoor service valve after making the leak inspection of field connected
tubing, vacuuming, and gas charging if necessary.
(3) Check the capacity code and model code setting.
* The factory setting is as shown in the table. Double check it.
* The capacity code is set by S4 (green, 4P DIP switch) on outdoor control PCB.
The model code is set by S5 (black, 2P DIP switch) on outdoor control PCB.
1
ON
ON side
1577_C_I
OFF side
S4 (green or Blue) capacity code
(4P DIP switch)
2 3 4
1
ON
ON side
OFF side
S5 (black) model code
(2P DIP switch)
2
S5. Model code
• R407 Models: GRV type
No. Outdoor PCB
Model No. 1 2 3 4
250 type (1 phase)ONONONOFF
250 type (3 phase)ONONONOFF
360 type (3 phase)OFFONOFFON
480 type (3 phase)OFFOFFONON
No. Outdoor PCB
Model No. 1 2
GRV250R5TAA
OFFON
GRV250R7TAA
OFFOFF
GRV360R7TAA
OFFOFF
GRV480R7TAA
OFFOFF
S4.Capacity code
No.Outdoor PCB
Model No.12
GRV250L5TAA ONON
GRV250L7TAA ONOFF
GRV360L7TAA ONOFF
GRV480L7TAA ONOFF
S5. Model code
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