第
54
页
共
59
页
display at
off state
SEC at
off
state
signal
normal.
2
、
Check whether the signal outputting from
the integrated chip of the electric control
board is normal, the electric control board
should be replaced when the signal is
abnormal.
E7
display at
off state
flicker 7/9
SEC
display
at off
state
outdoor
feedback fault
1
、
Check whether the winding resistance and
operation current of the compressor are
normal
2
、
Check whether the high and low pressure
is normal when the unit is running.
3
、
Check whether the indoor and outdoor
wiring is right; when it is wrong, connect
them again according to the circuit
diagram
4
、
Check whether the contact of the
inserter on the circuit board and the
connection are well, otherwise repair.
5
、
Check whether the signal feedback wire is
disconnected, replace or connect the
feedback signal wire.
6
、
Check whether the supply power is
phase-lacking or phase opposition.
7
、
Check whether the AC electromagnetic
contactor is well.
E8
display at
off state
flicker 8/10
SEC
display
at off
state
frost
protection/over
heat protection
1
、
Check whether the filter of the indoor unit
is dirty or blocked, and clean if it is dirty.
2
、
Check whether the indoor fan is running
normally, and replace the motor if it is
abnormal.
3
、
Check whether indoor pipe temperature
sensor is normal, and replace the sensor
if it is abnormal.
4
、
Check whether the system pressure is
normal, if abnormal, should check
whether there is leakage, and fill the
refrigerant again.
Summary of Contents for CSU 12HCAA
Page 48: ...2005 12 20...
Page 49: ......
Page 57: ...9 59...
Page 59: ...11 59...
Page 60: ...12 59...
Page 61: ...13 59...
Page 62: ...14 59...
Page 63: ...15 59...
Page 64: ...16 59...
Page 65: ...17 59...
Page 66: ...18 59...
Page 67: ...19 59 Installation Guide 4 Indoor unit and outdoor unit explosion diagram and spare parts list...
Page 68: ...20 59 CS 23H3 V77AY1A CS 25H3 V AY1A CS 32H3 V AH4 INDOOR UNIT...
Page 69: ...21 59 CS 51H3 H AH1 INDOOR UNIT...
Page 70: ...22 59 CS 66H3 N AS INDOOR UNIT...
Page 71: ...23 59 CS 88H3 Q AT INDOOR UNIT...
Page 72: ...24 59 KFR 23GW AC CS 25H3 V AY1A OUTDOOR UNIT...
Page 73: ...25 59 CS 32H3 V AH4 OUTDOOR UNIT...
Page 74: ...26 59 CS 51H3 H AH1 OUTDOOR UNIT...
Page 75: ...27 59 CS 66H3 N AS OUTDOOR UNIT...