AYXP7FR
Status of | Indication | Malfunction | Content of diagnosis | Inspection location/method |
| Remedy | |||
indoor/ | by LED1 | No. dis- |
|
|
|
|
|
| |
outdoor | on out- | played on |
|
|
|
|
|
| |
units | door unit | main unit |
|
|
|
|
|
| |
| *2 | display sec- |
|
|
|
|
|
| |
|
| tion *1 |
|
|
|
|
|
| |
|
| Main | Sub- | Main category |
|
|
|
| |
|
| cate- | cate- |
|
|
|
|
|
|
|
| gory | gory |
|
|
|
|
|
|
Indoor/ | 6 times | 6 | Outdoor unit DC | DC overcurrent error | (1) | IPM continuity check | (1) | Replace the outdoor | |
outdoor |
|
|
|
|
|
|
|
| unit control PWB |
units in |
|
|
|
|
|
|
|
| assembly. |
complete |
|
|
|
|
| (2) | Check the IPM and heat | (2) | Correct the installa- |
shutdown |
|
|
|
|
|
| sink for secure installation. |
| tion (tighten the |
|
|
|
|
|
|
|
|
| screws). |
|
|
|
|
|
| (3) | Check the outdoor unit fan | (3) | Replace the outdoor |
|
|
|
|
|
|
| motor for proper rotation. |
| unit fan motor. |
|
|
|
|
|
| (4) | No abnormality found in | (4) | Replace the outdoor |
|
|
|
|
|
|
| above inspections (1) |
| unit control PWB |
|
|
|
|
|
|
| through (3). |
| assembly. |
|
|
|
|
|
| (5) | No abnormality found in | (5) | Replace the compres- |
|
|
|
|
|
|
| above inspections (1) |
| sor. |
|
|
|
|
|
|
| through (4). |
|
|
|
|
|
| IPM pin level error |
| Check the IPM is attached |
| Replace the outdoor | |
|
|
|
|
|
|
| correctly to the outdoor |
| unit control PWB |
|
|
|
|
|
|
| unit control PWB. |
| assembly. |
Indoor/ | 7 times | 7 | Outdoor unit AC | AC overcurrent error | (1) | Check the outdoor unit air | (1) | Ensure unobstructed | |
outdoor |
|
|
|
|
|
| outlet for blockage. |
| air flow from the out- |
units in |
|
|
|
|
|
|
|
| door unit air outlet. |
complete |
|
|
|
|
| (2) | Check the outdoor unit fan | (2) | Check the outdoor unit |
shutdown |
|
|
|
|
|
| for proper rotation. |
| fan motor. |
|
|
|
| AC overcurrent error | (1) | IPM continuity check | (1) | Replace the outdoor | |
|
|
|
|
| in OFF status |
|
|
| unit control PWB |
|
|
|
|
|
|
|
|
| assembly. |
|
|
|
| AC maximum cur- | (1) | Check the outdoor unit air | (1) | Ensure unobstructed | |
|
|
|
|
| rent error |
| outlet for blockage. |
| air flow from the out- |
|
|
|
|
|
|
|
|
| door unit air outlet. |
|
|
|
|
|
| (2) | Check the outdoor unit fan | (1) | Check the outdoor unit |
|
|
|
|
|
|
| for proper rotation. |
| fan motor. |
|
|
|
| AC current defi- | (1) | Check if there is an open- | (1) | Replace the outdoor | |
|
|
|
|
| ciency error |
| circuit in the secondary |
| unit control PWB |
|
|
|
|
|
|
| winding of the current |
| assembly. |
|
|
|
|
|
|
| transformer of the outdoor |
|
|
|
|
|
|
|
|
| unit control PWB. |
|
|
|
|
|
|
|
| (2) | Check if the refrigerant | (2) | Charge the specified |
|
|
|
|
|
|
| volume is abnormally low. |
| amount of refrigerant. |
|
|
|
|
|
| (3) | Check if the refrigerant | (3) | Correct refrigerant |
|
|
|
|
|
|
| flows properly. |
| clogs. |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| valve, pipe, expan- |
|
|
|
|
|
|
|
|
| sion valve) |
Indoor/ | 9 times | 9 | Outdoor unit | Thermistor installa- | (1) | Check to make sure out- | (1) | Correct the installa- | |
outdoor |
|
|
| cooling/heating | tion error or |
| door unit thermistor TH2 |
| tion. |
units in |
|
|
| switchover | valve error |
| (heat exchanger) and TH5 |
|
|
complete |
|
|
|
|
|
|
|
| |
shutdown |
|
|
|
|
|
| in correct positions. |
|
|
|
|
|
|
|
| (2) | Measure resistance of | (2) | Replace the ther- |
|
|
|
|
|
|
| thermistors TH1 and TH5. |
| mistor assembly. |
|
|
|
|
|
| (3) | Check the | (3) | Replace the |
|
|
|
|
|
|
| proper operation. |
| valve. |
|
|
|
|
|
| (4) | No abnormality found in | (4) | Replace the outdoor |
|
|
|
|
|
|
| above inspections (1) |
| unit control PWB |
|
|
|
|
|
|
| through (3). |
| assembly. |
|
|
|
| Torque control error | (1) | Check if the refrigerant | (1) | Change the specified | |
|
|
|
|
|
|
| volume is abnormally low. |
| amount of refrigerant. |
|
|
|
|
|
| (2) | Check the | (2) | Replace the |
|
|
|
|
|
|
| proper operation. |
| valve. |
|
|
|
|
|
| (3) | check to see compressor | (3) | Replace the compres- |
|
|
|
|
|
|
| type is correct. |
| sor with the correct |
|
|
|
|
|
|
|
|
| part. |
3 – 15
