5. Troubleshooting
Check the basic checkpoints first to determine whether it is machine trouble or a problem in the operation method. When it is not related to the basic checkpoints, perform checking in accordance with the procedures of troubleshooting by symptom.
5-1 Basic Checkpoints for Troubleshooting
1)Is the voltage of the power source appropriate ?
(1)It should be within the rating voltage ±10% range.
(2)The air conditioner may not operate properly when the voltage is out of this range.
2)Is the connection with the fan motor, compressor wire, and starting condenser appropriately made ?
3)The symptoms listed in the table below are not indicative of machine trouble.
Symptom | Cause and check |
|
|
No operation | • Check whether there is power failure or the power plug is pulled out. |
| • Check whether the unit is stopped as a result of completion |
| of the sleep time. |
| • Pull out the power plug for ten seconds, and then insert it again. |
|
|
Air flows, but | • Check whether the Air filter is clogged with dust or is dirty. |
no cooling | • Check whether the desired temperature is too high. Set the desired |
| temperature to a lower level than the current temperature. |
| • Check whether it is in "FAN" mode. |
|
|
The remocon does | • Check whether battery is completely depleted. |
not operate | • Check whether the battery is properly inserted. |
| • Check whether the receiving window of the remocon for the assembly |
| main PCB is blinded. |
| • Check whether the remocon is affected by jamming due to a neon sign. |
|
|
No temperature | • Check whether the unit is in "FAN" mode. |
setting | (In "FAN" mode, only the current temperature is displayed, and the |
| desired temperature is not set.) |
|
|
❈Checking and Display of Fault Area
ERROR OPERATION
ERROR OPERATION
ROOM THERMISTOR (OPEN OR SHORT)
E1 displayed
FRIEDRICH AIR CONDITIONING CO. |