Airwell 7SP091170, Service Manual

Page: 124 / 151

Troubleshooting
122 Electrical Control System
For Console:
NO. Malfunction Running lamp Timer lamp Defrosting lamp
1 Open or short circuit of T1 temperature sensor
☆
X X
2 Open or short circuit of T2 temperature sensor X X
☆
3
Communication malfunction between indoor and outdoor
units.
X
☆
X
4 Outdoor fan speed has been out of control X
☆
O
5 Indoor EEPROM malfunction
☆ ☆
X
6 IPM module protection
☆
X
☆
7
Open or short circuit of T3 or T4 temperature sensor or
Outdoor unit EEPROM parameter error
☆ ☆ ☆
8 Voltage protection
☆ ☆
O
9 Inverter compressor drive protection
☆ ◎
X
10 Indoor fan Speed has been out of control.
☆
O
☆
11 Mode conflict
☆
X O
O(light) X(off)
☆
(flash at 5Hz)
◎
(flash at 0.5Hz)