Name: Manual for DS-9UIDN - Troubleshooting and error codes + PDF Download
Brand: DAITSU

Manual for DS-9UIDN - Troubleshooting and error codes + PDF Download

Brand: DAITSU

Category: Air Conditioner

Manual Type:

Language:

Uploaded: April 8, 2025, 1:53 p.m.

Warranty Summary

No warranty information is provided in this user manual.

Basic Operation Steps:

Power ON/OFF: Use the ON/OFF button to start or stop the air conditioner.
Mode Selection: Use the MODE button to choose between Auto, Cool, Dry, Fan, and Heat modes.
Temperature Adjustment: Use the + and - buttons to set the desired temperature.
Fan Speed: Use the FAN button to select fan speed (Auto, Low, Medium, High, Very High).
Air Flow Direction: Use the SWING button to adjust the direction of the airflow.

Refer to the manual for detailed instructions on using the remote control and other functions like Sleep mode, Timer, and X-FAN function for drying the indoor unit after operation.

Troubleshooting and error codes

Phenomenon	Check items	Solution
Indoor unit can’t receive remote controller’s signal or remote controller has no action.	Whether it’s interfered severely (such as static electricity,stable voltage)? Whether remote controller is within the signal receiving range? Whether there are obstacles? Whether remote controller is pointing at the receiving window? Is sensitivity of remote controller low; fuzzy display and no display? No display when operating remote controller? Fluorescent lamp in room?	Pull out the plug. Reinsert the plug after about 3 min, and then turn on the unit again. Signal receiving range is 8m. Remove obstacles. Select proper angle and point the remote controller at the receiving window on indoor unit. Check the batteries. If the power of batteries is too low, please replace them. Check whether remote controller appears to be damaged. If yes, replace it. Take the remote controller close to indoor unit. Turn off the fluoresent lamp and then try it again.
No air emitted from indoor unit	Air inlet or air outlet of indoor unit is blocked? Under heating mode, indoor temperature is reached to set temperature? Heating mode is turned on just now?	Eliminate obstacles. After reaching to set temperature, indoor unit will stop blowing out air. In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon.
Air conditioner can’t operate	Power failure? Is plug loose? Air switch trips off or fuse is burnt out? Wiring has malfunction? Unit has restarted immediately after stopping operation? Whether the function setting for remote controller is correct?	Wait until power recovery. Reinsert the plug. Ask professional to replace air switch or fuse. Ask professional to replace it. Wait for 3 min, and then turn on the unit again. Reset the function.
Mist is emitted from indoor unit’s air outlet	Indoor temperature and humidity is high?	Because indoor air is cooled rapidly. After a while, indoor temperature and humidity will be decrease and mist will disappear.
Set temperature can’t be adjusted	Unit is operating under auto mode? Your required temperature exceeds the set temperature range?	Temperature can’t be adjusted under auto mode. Please switch the operation mode if you need to adjust temperature. Set temperature range: 16ºC ~30ºC.
Cooling (heating) effect is not good.	Voltage is too low? Filter is dirty? Set temperature is in proper range? Door and window are open?	Wait until the voltage resumes normal. Clean the filter. Adjust temperature to proper range. Close door and window.
Odours are emitted	Whether there’s odour source, such as furniture and cigarette, etc.	Eliminate the odour source. Clean the filter.
Air conditioner operates normally suddenly	Whether there’s interference, such as thunder, wireless devices, etc.	Disconnect power, put back power, and then turn on the unit again.
Outdoor unit has vapor	Heating mode is turned on?	During defrosting under heating mode, it may generate vapor, which is a normal phenomenon.
“Water flowing” noise	Air conditioner is turned on or turned off just now?	The noise is the sound of refrigerant flowing inside the unit, which is a normal phenomenon.
Cracking noise	Air conditioner is turned on or turned off just now?	This is the sound of friction caused by expansion and/or contraction of panel or other parts due to the change of temperature.

Troubleshooting and error codes

Phenomenon	Check items	Solution
Indoor unit can’t receive remote controller’s signal or remote controller has no action.	Whether it’s interfered severely (such as static electricity,stable voltage)? Whether remote controller is within the signal receiving range? Whether there are obstacles? Whether remote controller is pointing at the receiving window? Is sensitivity of remote controller low; fuzzy display and no display? No display when operating remote controller? Fluorescent lamp in room?	Pull out the plug. Reinsert the plug after about 3 min, and then turn on the unit again. Signal receiving range is 8m. Remove obstacles. Select proper angle and point the remote controller at the receiving window on indoor unit. Check the batteries. If the power of batteries is too low, please replace them. Check whether remote controller appears to be damaged. If yes, replace it. Take the remote controller close to indoor unit. Turn off the fluoresent lamp and then try it again.
No air emitted from indoor unit	Air inlet or air outlet of indoor unit is blocked? Under heating mode, indoor temperature is reached to set temperature? Heating mode is turned on just now?	Eliminate obstacles. After reaching to set temperature, indoor unit will stop blowing out air. In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon.
Air conditioner can’t operate	Power failure? Is plug loose? Air switch trips off or fuse is burnt out? Wiring has malfunction? Unit has restarted immediately after stopping operation? Whether the function setting for remote controller is correct?	Wait until power recovery. Reinsert the plug. Ask professional to replace air switch or fuse. Ask professional to replace it. Wait for 3 min, and then turn on the unit again. Reset the function.
Mist is emitted from indoor unit’s air outlet	Indoor temperature and humidity is high?	Because indoor air is cooled rapidly. After a while, indoor temperature and humidity will be decrease and mist will disappear.
Set temperature can’t be adjusted	Unit is operating under auto mode? Your required temperature exceeds the set temperature range?	Temperature can’t be adjusted under auto mode. Please switch the operation mode if you need to adjust temperature. Set temperature range: 16ºC ~30ºC.
Cooling (heating) effect is not good.	Voltage is too low? Filter is dirty? Set temperature is in proper range? Door and window are open?	Wait until the voltage resumes normal. Clean the filter. Adjust temperature to proper range. Close door and window.
Odours are emitted	Whether there’s odour source, such as furniture and cigarette, etc.	Eliminate the odour source. Clean the filter.
Air conditioner operates normally suddenly	Whether there’s interference, such as thunder, wireless devices, etc.	Disconnect power, put back power, and then turn on the unit again.
Outdoor unit has vapor	Heating mode is turned on?	During defrosting under heating mode, it may generate vapor, which is a normal phenomenon.
“Water flowing” noise	Air conditioner is turned on or turned off just now?	The noise is the sound of refrigerant flowing inside the unit, which is a normal phenomenon.
Cracking noise	Air conditioner is turned on or turned off just now?	This is the sound of friction caused by expansion and/or contraction of panel or other parts due to the change of temperature.