Daikin FWW Series Technical Manual page 166

Self Diagnostic Table – W2 Board
Fault Indication
Room sensor error (short/open)
Pipe water sensor error (short/open)
Water pump error*
Pipe water temperature fault
*Applicable to FWF model only.
Self Diagnostic Table – W3 Board
1. Room Sensor Open or Short
2. Pipe Water sensor Open or Short
3. Pipe Water Temperature poor
4. Pipe Water Temperature bad/fault
5. Water Pump Fault**
Hardware Error (tact switch pin Short/M3 or M4
6.
Mode with valveless section)
7. Window Open activated*
8. Antifreeze mode activated*
9. Load Shedding activated*
*Only applicable for 4-pipes system.
**Applicable to FWK model only.
Self Diagnostic Table – W3DC Board
1. Room Sensor Open or Short
2. Pipe Water sensor Open or Short
3. Pipe Water Temperature poor
4. Pipe Water Temperature bad/fault
5. Water Pump Fault
6. Window Open activated*
7. Antifreeze mode activated*
8. Load Shedding activated*
9. Hardware Error
10. No feedback from indoor fan
*Only applicable for 4-pipes system.
162
COOL LED
Blink 1 time
Blink 2 times
Blink 6 times
Blink 5 times
Event
Event
Error
Code
Check room sensor
E1 connection/change room air
sensor
Check pipe water sensor
E2 connection/change pipe
water sensor
Clear the clogging at drain
E6 pipe. If pump is not working,
change the pump
Check chiller condition
E5
(not working or just started)
Power LED Timer LED
Blink 1 time
Blink 2 times
Blink 3 times
- Blink 1 time
- Blink 2 times
- Blink 6 times
Blink 6 times
Blink 7 times
Blink 8 times
Power LED Timer LED
Blink 1 time
Blink 2 times
Blink 3 times
- Blink 1 time
- Blink 2 times
Blink Cool 6 times
Blink Cool 7 times
Blink Cool 8 times
- Blink 6 times
Blink Cool 4 times
Troubleshooting
Action
Error Code
- Blink E1
- Blink E2
- Blink E4
Blink E5
Blink E6
Blink E8
- -
- -
- -
Error Code
- Blink E1
- Blink E2
- Blink E4
Blink E5
Blink E6
- -
- -
- -
Blink E8
Blink E9