Friedrich Ductless split system - Self-diagnosis Function; Outdoor Error Indicator; Error Code List

Installation Manual 21
ENGLISH
Self-diagnosis Function
If abnormal voltage is supplied, the protection circuits will turn off the product in order to prevent
the component damage. The product will automatically restart after 3 minutes.
Outdoor Error
Ex) Error 21 (DC Peak)
MR24UY3J MR36UY3J
Self-diagnosis Function
Error Indicator (Outdoor)
2times ◑ 1time ◑ OFF
2times ◑ 2times ◑ OFF
2times ◑ 3times ◑ OFF
2times ◑ 4times ◑ OFF
2times ◑ 6times ◑ OFF
2times ◑ 7times ◑ OFF
2times ◑ 9times ◑ OFF
3times ◑ 2times ◑ OFF
4times ◑ 0 OFF
4times ◑ 1time ◑ OFF
4times ◑ 3times ◑ OFF
4times ◑ 4times ◑ OFF
4times ◑ 5times ◑ OFF
4times ◑ 6times ◑ OFF
4times ◑ 8time ◑ OFF
5times ◑ 1times ◑ OFF
5times ◑ 3times ◑ OFF
6times ◑ 0 OFF
6times ◑ 1times ◑ OFF
6times ◑ 2times ◑ OFF
6times ◑ 5times ◑ OFF
6times ◑ 7times ◑ OFF
21 DC Peak(IPM Fault)
22 Max. CT(CT2)
23 DC Link Low Volt.
24 Pressure switch/Heater Sink.
26 DC Comp Position Error
27 PFC Fault Error
29 Comp Over Current
32 D-Pipe High(Inv.)
40 CT Sensor(Open/Short)
41 Inv. D-Pipe Th Error(Open/Short)
43 High Pressure Sensor(Open/Short)
44 Outdoor air Th Error(Open/Short)
45 Cond. Middle Pipe Th Error(Open/Short)
46 Suction Pipe Th Error(Open/Short)
48 Cond. Out-Pipe Th Error(Open/Short)
51 Capacity over
53 Communication Error(Indoor ↔ Outdoor)
60 EEPROM Error(Outdoor)
61 Cond. Middle Pipe High
62 Heatsink Error(High)
65 Heatsink Th Error(Open/Short)
67 BLDC motor fan lock(Outdoor)
Error Code
Description
LED 1
(Red)
LED 2
(Green)
Indoor
status
1 Time 1 Time 1 Time
2 Times2 Times2 Times
1 Sec.
2 Sec. 2 Sec.
1 Sec. 1 Sec.
LED01G
(RED)
LED02G
(GREEN)