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display at
flicker 4/6
E4
on/off
state
PG
motor
flicker 5/7
E5
display at
off state
E6
PG motor
flicker 6/8
state
display
at off
SEC
state
display
at off
signal of indoor
SEC
state
display
第 53 页 共 59 页
the normal temperature 25℃), when it is
abnormal the sensor should be replaced.
2、Check whether there is short circuit or
open circuit in the wire of the sensor, and
whether the plug is connected well,
whether there is welding off or rosin joint
on the electric control board, if there is
any, it should be repaired.
3、When the 1 and 2 are both normal, then
the components or integrated circuit is
damaged, the electric control board
should be replaced.
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 coil pipe sensor is
normal) whether the contact of the
inserter on the circuit board is well, the
coil pipe temperature sensor is fixed, the
evaporation of the indoor unit is well, the
outdoor unit
key
abnormal
temperature detected by the coil pipe
temperature sensor has reached the
cooling or heating temperature.
4 、 Check whether the surface of the
condenser is too dirty, it should be
cleaned when it is too dirty.
5 、 Check whether the capacitance of the
outdoor motor and the fan is damaged, it
should be replaced when it is damaged.
6、If the above items are normal, the electric
control board should be replaced.
1、Check whether two sets of plugs on the
outlet end of the motor have loosed from
the socket of the electric control board,
insert it firmly when loosing.
2、Check whether the indoor motor has
no feedback
damaged, the motor should be replaced
when it is damaged
fan
3、 Check whether the controllable silicon
and other components on the electric
control board have damaged, replace the
controllable silicon or electric control
board when they are damaged.
1、Firstly check whether the indoor fan is
no over zero
is
to
check
the
evaporator
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