Troubleshooting (For Service Personnel) - Daikin FTXZ25NVM Operation Manual

Troubleshooting (for service personnel)

Before making an inquiry or a request for repair, check the following.
If the problem persists, consult the service shop.
Not trouble
These cases are not troubles.
The air conditioner does not operate
Case
Operation was started during
CLEANING FILTER operation.
Operation was started immediately
after CLEANING FILTER operation
stopped.
The air conditioner does not
operate.
[OPERATION lamp is off]
The air conditioner does not
operate.
[OPERATION lamp is blinking]
The air conditioner stops operating
Case
Operation stops suddenly.
[OPERATION lamp is on]
Operation stops suddenly.
[OPERATION lamp is blinking]
The air conditioner does not stop operating
Case
The air conditioner continues
operating even after COOLING,
"SARARA" DRY, or DRY COOLING
operation is stopped.
The air conditioner continues
operating even after operation is
stopped.
Description / where to check
• The air fi lter is moving back to the normal position. Wait for up to about 3 minutes.
• Has the circuit breaker been tripped or the fuse blown?
• Is it power failure?
• Are batteries set in the remote controller?
• Does the address of the indoor unit match that of the remote controller? Set the address
again.  Page 34
• Turn off the power with the circuit breaker and restart operation with the remote controller.
If the OPERATION lamp is still blinking, check the error code and consult the service shop.
Description / where to check
• For system protection, the air conditioner may stop operating on a sudden large voltage
fl uctuation. It automatically resumes operation in about 3 minutes.
• Is there anything blocking the air inlet or air outlet of the indoor unit or outdoor unit?
Stop operation and after turning off the circuit breaker, remove the obstruction. Then restart
operation with the remote controller. If the OPERATION lamp is still blinking, check the error
code and consult the service shop.
Description / where to check
• This happens when the unit is in AUTO MOLD PROOF operation.
When you want to stop MOLD PROOF operation in the middle, press
If the AUTO MOLD PROOF operation does not suit your preference, set the operation to
"Off".  Page 27
„ Immediately after the air conditioner is stopped
• This happens when defrosting operation (night defrosting) is running. (When QUICK
HEATING TIMER is set.)
 Page 21
• The outdoor unit fan continues rotating for another about 1 minute for system protection.
„ While the air conditioner is not in operation
• When the outdoor temperature is high, the outdoor unit fan may start rotating for system
protection.
• This happens when preparatory heating operation for QUICK HEATING TIMER is
running.  Page 21
• This happens when the unit is in CLEANING FILTER operation. Wait for about
11 minutes.
 Page 28
Check
Please check again before calling a repair
person.
 Page 40
 Page 40
.
42 42