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4. Reversing valve control circuit
This model reversing valve control used to control the relay ON/OFF of the reversing 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 follows. If the reversing valve not connected or all the condition not the same as follow,
it may be something wrong with the reversing valve circuit.
�
ooerat1on mode
Cooling Usual cooling
Heating
r
©
CD
L_
micon@pin - OV
Hi
Usual heating
Lo
Defrost
Hi
SK1
RL3
12V
RL3(coil)
Fig.4-1
CN2G)- CN2@
HIC@pin - OV
ov
OV
AC240V
12V
ov
ov
P.W.BMAIN
0----.
AC240V
P.W.B HIC
L
- 97 -
_J
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