MDV MFS2i-24ARN1 - Self-Diagnosis; Leds for the Indication of Outdoor Trouble

33
10.2 Self-diagnosis
10.3 LEDs for the indication of outdoor trouble(only for 48K)
Their codes are listed in the following table:
Codes
Contents
P4
Protection of temperature of indoor evaporator
P5
Protection of temperature of outdoor condenser
P9
Defrosting or anti-cold air
E1
Open-circuit and short-circuit of indoor temperature sensors T1
E2
Temp. sensor T2 on indoor evaporator is open circuit or short circuit
E3
The condenser temperature sensor T3 is open or short
E6
Protection of outdoor unit
Type
LED1
LED2
LED3
Contents
Indication
Trouble
Off
Off
On
OK
E6
Trouble
On
Off
On
Phase sequence error
E6
Trouble
Off
On
On
Overload of current
E6
Trouble
On
On
On
Lack of phase
E6
Trouble
flash at a
frequency of
1 Hz
Off
On
Suction pressure protection
E6