6
Reversing valve
12V
HIC P.W.B
28
Control P.W.B
AC230V
SK1
Point
operation mode
Cooling
Heating
Usual cooling Hi
Lo
Hi
0V
12V
0V
AC230V
CN2 1 - CN2 4
0V
AC230V
Usual heating
Defrost
HIC 34 pin - 0V
This model reversing valve control used to control the relay ON/OFF of the revesing valve, and also control the coil of the
reversing valve ON/OFF.
The relay ON/OFF has different type when in the different operation mode.
You can see each operation mode as fllows. If the reaversing valve not connected or all the condition not the same as follow,
it may be something wrong with the reversing valve circuit.
micon
4
1
RL3
RL3( coil)
1134
4.Reversing valve control circuit
28
Fig.4-1
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