Friedrich AS - W126BMS0 Service Manual page 35

2) 1 LED Type
Error
Code
21 DC Peak (IPM Fault)
22 CT 2(Max CT)
23 DC Link Low Volt
25 Low wire volt/ high wire volt
26 DC Comp Position Error
27 PSC Fault Error
29 Inverter Compressor over-current
31 CT error (low current)
32 D-Pipe High (INV)
37 Failure Compression Ratio
40 CT Sensor (Open / Short)
41 INV. D-Pipe Th Error (Open / Short)
44 Outdoor Air Th Error (Open / Short)
45 Cond. Middle Pipe Error (Open / Short)
48 Cond. Out Pipe Error (Open / Short)
Communication Failure(Outdoor Unit ↔ Indoor Unit)
53
60 EEPROM Check Sum Error
61 Cond. Pipe High
62 Heatsink High
63 Cond. Pipe Low
65 Heatsink Th Error (Open/Short)
67 Outdoor BLDC Fan Lock
72 Failure 4Way
73 IGBT Damage
Ex) Error Code 21 (DC Peak)
Red LED
Description
1sec 2sec 1sec
Indoor Unit
LED2
2 Times
2 Times
2 Times
2 Times
2 Times
2 Times
2 Times
3 Times
3 Times
3 Times
4 Times
4 Times
4 Times
4 Times
4 Times
5 Times
6 Times
6 Times
6 Times
6 Times
6 Times
6 Times
7 Times
7 Times
- 35 -
Part 4 Trouble Shooting
2sec 1sec 2sec 1sec
Error Indication
Outdoor Unit
LED1 Red
1 Time 2 Times
2 Times 2 Times
3 Times 2 Times
5 Times 2 Times
6 Times 2 Times
7 Times 2 Times
9 Times 2 Times
1 Time 3 Times
2 Times 3 Times
7 Times 3 Times
- 4 Times
1 Time 4 Times
4 Times 4 Times
5 Times 4 Times
8 Tiems 4 Times
3 Times 5 Times
- 6 Times
1 Time 6 Times
2 Times 6 Times
3 Times 6 Times
5 Times 6 Times
7 Times 6 Times
2 Times 7 Times
3 Times 7 Times
2sec
Red
1 Time
2 Times
3 Times
5 Times
6 Times
7 Times
9 Times
1 Time
2 Times
7 Times
-
1 Time
4 Times
5 Times
8 Tiems
3 Times
-
1 Time
2 Times
3 Times
5 Times
7 Times
2 Times
3 Times