Installation and Maintenance Manual

VRF-SVN33A-EN 41
Control System
Initiating System Operations
Buttons K1, K2, and K3 are used to initiate system operations. The first two digits of the 7-segment
display respond as shown in the last column of the following tables.
Table 22. Button K1
Number of times K1
is pressed Operation
7-segment display:
Digits 1 and 2
1 (hold for 5 seconds) Test operation
1
Refrigerant charging in heating mode
2
Te s t o p e r a t i o n in heating mode
3
Pump down in heating mode
4 Vacuum
5
Completion Blank
Table 23. Button K2
Number of times
button K2 is
pressed Operation
7-segment display:
Digits 1 and 2
1 Refrigerant charging in cooling mode
2 Test operation in cooling mode
3 Pump down in cooling mode
4 Refrigerant detection operation
5Completion Blank
Table 24. Button K3
Number of times
button K3 is
pressed Operation 7-segment display
1 Initialize (reset) operation Same as power up: “8888”