Daikin FTYN50FV1B [2/255] Error codes and description 1

Si10-417_C

Contents 1

Service Diagnosis

SPLIT & MULTI

1. Troubleshooting with LED............5

1.1 Indoor Unit ..................................... 5

1.2 Outdoor Unit ................................ 10

2. Troubleshooting by

Symptoms..................................11

2.1 Air conditioner does not run......... 11

2.2 Air conditioner runs but does not

cool (heat) the room. ................... 14

2.3 When operation starts, safety

breaker works. ............................. 16

2.4 Air conditioner makes big noise

and vibration. ............................... 19

2.5 Air is not humidified enough.

(for humidifying type unit) ............ 20

3. Service Check Function.............22

3.1 Check Method 1 .......................... 22

3.2 Check Method 2 .......................... 33

3.3 ARC447A1, A2, A3...................... 44

4. List of Applicable Models ...........45

4.1 Indoor Unit ................................... 45

4.2 Outdoor Unit ................................ 66

5. Error Codes and Description .....81

5.1 Indoor Unit ................................... 81

5.2 Outdoor Unit ................................ 84

6. Troubleshooting by Error

Code ..........................................94

6.1 Indoor Unit PCB Abnormality....... 94

6.2 Drain Water Level or Related

Abnormality.................................. 96

6.3 Freeze-up Protection Control or

Heating Peak-cut Control ............ 99

6.4 Fan Motor or Related

Abnormality................................ 103