9.2.2 Main control board
1
22
21
20
19
18
17
16
Code
Assembly unit
1
Power input port from Main control board (CN1)
Port for communication with Inverter module
2
(CN43)
3
Port for high pressure switch (CN18)
4
Port for low pressure switch (CN17)
5
Port for high pressure sensor(CN3)
6
Port for TH temp.sensor(CN5)
7
Port for TP temp.sensor(CN4)
8
Port for T3,T4 temp.sensor(CN6)
9
Port for electrical expansion valve1(CN33)
10
Port for communication with ammeter(CN22)
Port for communication with outdoor unit (CN20)
11
(Reserved)
Port for communication with hydro-box control
12
board (CN11)
13
Same as ITEM 12( CN45 PQE)
Port for communication with indoor monitor
14
(CN19 XYE)
2
COMM
23
S6
24
25
CN45
15
14
13
Code
19
3
4
5
6
H-SEN
26
27
28
P E Q
12
11
10
Assembly unit
15
Reserved(CN42)
16
Reserved(CN41)
17
OUT1 (CN40)
18
Port for crankcase heating tape(CN38)
19
SV2 (CN37) (Reserved)
20
Port for 4-way valve(CN36)
21
Port for the heating tape of drainage outlet(CN35)
22
Power output port to hydraulic module board (CN39)
23
Digital display(DSP1)
24
Dip switch S6
25
Dip switch S1
26
Port for Forced cooling(SW1)
27
Port for point check(SW2)
28
Dip switch S7(Reserved)
7
8
9