Commisioning - Samsung MCU-Y6NEE Installation Manual

K4 Switch (Electronic Valve Manual Control)
According to the push time of K4 Switch, A_C, A_H, ..., F_C, F_H, Liquid bypass solenoid valve opens in order.
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In Electronic Valve Manual Control mode, valve operates by K4 Push time irrespective of indoor operation mode.
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In Electronic Valve Manual Control mode, push K1 Switch makes DATA DISPLAY MODE to start and valves will operate

following indoor operation mode.
K4
(Push time)
1 A_C sol valve ON, other sol valve Off
2 A_H sol valve ON, other sol valve Off
3 B_C sol valve ON, other sol valve Off
4 B_H sol valve ON, other sol valve Off
5 C_C sol valve ON, other sol valve Off
6 C_H sol valve ON, other sol valve Off
7 D_C sol valve ON, other sol valve Off
8 D_H sol valve ON, other sol valve Off
9 E_C sol valve ON, other sol valve Off
10 E_H sol valve ON, other sol valve Off
11 F_C sol valve ON, other sol valve Off
12 F_H sol valve ON, other sol valve Off
13 Liquid b/p sol valve ON, other sol valve Off
14 sol valve Manual Control MODE end

Commisioning

After installing MCU, check those items below. If you find something unfulfilled, refer to the manual to complete it.
❈
1. If the gas leaking test has been completed or not.
2. If MCU has been fixed securely enough to avoid the danger of vibration and falling or not.
3. The Insulation condition of the pipe. (Refrigerant pipe, Pipe connection.)
4. If the R410A refrigerant has been charged or not.
If the subsidiary unit for R410A has been used or not.
5. Checking malfunction of the wire and the communication line.
6. If the MCU frame has been installed upside-down or not.
7. If the wire earthing work has been done or not.
8. If the space between sidewalls, ceiling concrete, and the ceiling Tex has been secured enough or
not to install the MCU frame.
9. If the supporting tool of the MCU pipe has been safely placed in 1.5m intervals or not.
10. If the prescribed wire has been used or not.
11. If the supplied power is proper or not.
12. If the additional refrigerant is proper or not.
(Refer to the installation manual of the HR outdoor unit.)
Display Contents
Item
Display segment
1 2
P A
P A
P B
P B
P C
P C
P D
P D
P E
P E
P F
P F
P S
P Communication DATA Display
3 4
1 0
0 1
1 0
0 1
1 0
0 1
1 0
0 1
1 0
0 1
1 0
0 1
0 1
Check
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