9Troubleshooting
Analysis in this section is used for D.C. Variable Frequency Series. Before analysis, you can diagnose according to the code displayed on indoor unit or indicator display on outdoor unit. (Refer to Malfunction display section).
Breaker tripped or fuse burnt out
| Air | conditioner | |||
| does | not response | |||
Air | after | powered on. | |||
(The | buzzer | does | |||
conditi | not sound after the | ||||
oner | plug | is | connected | ||
and | the | unit | does | ||
cannot | |||||
not response | after | ||||
start up | the |
| remote | ||
| controller is | used | |||
| to turn it on) |
| |||
|
|
|
|
| |
Remote controller does not receive signal (When powered on, the buzzer will send out a sound, unless it is broken)
When the breaker is set ON, it will trip at once
When the unit is turned on, the breaker will trip in a few minutes
No power supply
The power plug is not or poorly connected
Controller fuse is burnt out
Loose or poor contact of transformer connection, or transformer malfunction
The controller is broken
Batteries of remote controller are low
Malfunction of remote controller
Loose or poor connection of receiving head
Receiving head is broken
Measure the insulating resistance for grounding to confirm whether there is electrical leakage or short circuit in the unit
Insulation malfunction of line or componen in the air conditioner. Insulation breakdow occurs after radiation, which causes shor circuit or electricity leakage. Measure insulating resistance or use
Malfunction of fuse. Replace it.
Check power supply circuit
Check and plug well plug, make loosen contact firm
Change control fuse
Secure the wire connection: measure the output voltage of the transformer and replace it if the value is wrong
Replace the controller
Change battery
First press the "AUTO" button of the manual switch. If there is no response, check according to the above method; if it is normal after the button is pressed, check if the installation location and wire connection of the receiving head are correct. If correct, replace the receiving head, or the remote controller.