32
10.2
Self-diagnosis
Codes
Contents
E01
The temp. sensor is off, or short-circuit.
E02
Compressor is over current
E04
Outdoor unit protection
P02
Compressor is over load
P03
The temperature of evaporator coil of indoor unit is too low (when cooling)
P04
The temperature of evap
io
nrdaoto
orr u
co
niilt o
isf too high (when heating)
P05
The temperature of air outlet of indoor unit is too high (when heating)
10.3
LEDs for the indication of outdoor trouble
In normal operation, LEDs emit no light and they will flash at a frequency of 2Hz when
trouble occurs. Their codes are listed in the following table:
Type
Contents
LED1
LED2
LED3
Indication
Trouble
Phase sequence or Lack of phase(A ,B)
Flash
Off
Off
E04
Trouble
Lack of phase(C)
Off
Off
Off
E04
Trouble
Protection of low pressure
Flash
Flash
Off
E04
Trouble
Overload of current
Off
Off
Flash
E04
Trouble
Communication failure
Flash
Off
Flash
E04
Trouble
Open-circuit or short-circuit trouble of T3
Off
Flash
Flash
E04
Trouble
Open-circuit or short-circuit trouble of T4
Off
Flash
Off
E04
Trouble
Condenser high temperature protection
Flash
Flash
Flash
E04
Note:
When the machine stands by ,LED1- LED3 flashs in low speed.
