Installation Guide

Indoor Unit
Display
Outdoor Unit Indicators
M
alfunction Name Possible Causes
27
DIAGNOSTIC CODES
Indoor Ambient Temperature
Sensor Malfunction
Indoor Coil Temperature
Sensor Malfunction
Outdoor Ambient Temperature
Sensor Malfunction
Outdoor Coil Temperature
Sensor Malfunction
Outdoor Discharge Temperature
Sensor Malfunction
High DC Bus Voltage Protection
Low DC Bus Voltage Protection
Compressor Phase Current
Protection
Capacitor Charging Malfunction
Module Temperature Sensor
Malfunction
Module Temperature Protection
Compressor Overload Protection
1) Loose or bad connection between sensor and control board.
2) Indoor ambient temperature sensor damaged.
3) Control board malfunction.
1) Loose or bad connection between sensor and control board.
2) Indoor coil temperature sensor damaged.
3) Control board malfunction.
1) Loose or bad connection between sensor and control board.
2) Outdoor ambient temperature sensor damaged.
3) Control board malfunction.
1) Loose or bad connection between sensor and control board.
2) Outdoor coil temperature sensor damaged.
3) Control board malfunction.
1) Loose or bad connection between sensor and control board.
2) Discharge temperature sensor damaged.
3) Control board malfunction.
1) Supply voltage on L1 and N is above 265Vac.
2) Capacitor on control board malfunction.
3) Outdoor control board malfunction.
1) Supply voltage on L1 and N is below 150Vac.
2) Capacitor on control board malfunction.
3) Outdoor control board malfunction.
1) IPM module malfunction.
2) Outdoor control board malfunction.
3) Compressor malfunction.
Capacitor malfunction.
Outdoor control board malfunction.
1) Lack of thermal grease on IPM module.
2) Heat sink (radiator) not tightly mounted.
3) Control board malfunction.
1) Wiring terminal OVC-COMP is loose.
2) Refer to the malfunction analysis in Service Manual.
F1
F2
F3
F4
F5
PH
PL
P5
PU
P7
P8
H3
Yellow
6 flashes
and
1 sec Off
5 flashes
and
1 sec Off
7 flashes
and
1 sec Off
13 flashes
and
1 sec Off
12 flashes
and
1 sec Off
8 flashes
and
1 sec Off
Red