Chigo CMV-50V9A-S, Service Manual

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The malfunction code: P3 (The indoor input current is large)
Annotation 1：The normal value of the phase current： 18K
＜
11A;24K
＜
13A;28K
＜
15A
The malfunction code:
P4
（compressor discharge temp is overhigh、outdoor ambient temp go beyond the limited、compressor
crustal temp switch is disconnected、module temp go beyond the limited）
Y
N
N
Y
N
Y
Turn off the power
Check whether the compressor crustal temp
switch is disconnected.
Y
Compressor crustal temp switch has
been damaged，then change it。
N
Check whether the outdoor ambient temp is
overhigh or overlow.
Y
The fault will disappear when the outdoor
ambient temp is beyond minus 20
℃
and
under plus 55
℃
.
N
Pls Charge the refrigerant.
N
Check whether the A/C units’ pressure is normal（the
normal value ： high pressure 3.06Mpa low pressure
1.6Mpa）when the A/C unit operate
Y
The faulty cause
：
1
、
the ambient temp exceed the temp range
of the A/C’s running
2
、
the outdoor PCB’s hardware is bad
The faulty cause
：
2
、 the compressor crustal temp switch has been
damaged
3
、 、outdoor ambient temp go beyond the limited
4
、 compressor discharge temp is overhigh
5
、 module temp go beyond the limited
Turn on the unit
Check the ambient temperature whether it is more
than the running temperature(cooling:10~46
℃,
hot:-15~24
℃)
Pls wait the conditions returned to
normal then run it if the operating
conditions is very bad.
。
Whether the current is normal? the
normal current:18K
＜
13A. 24K,
＜
15A. 28K
＜
17A
The refrigerant is more than
usual. Pls let it out.
The outdoor PCB is bad. Pls
change it
Whether the pressure is
normal?
(the normal
value : the high is
2.4~3.06MPa. the low is
1.2~1.6MPa
Check the compressor
phase current whether it
is large. Pls change it if
the value is large.
N