Diagnosis | Abnormality / | Abnormality | Protection | Problem | |
display | Protection control | Judgment | Operation | ||
| |||||
H98 | Indoor high pressure | — | — | Indoor high pressure | |
protection | protection (Heating) | ||||
|
|
| |||
|
|
|
|
| |
H99 | Indoor operating unit | — | — | Indoor freeze protection | |
freeze protection | (Cooling) | ||||
|
|
| |||
|
|
|
|
| |
| 4 times happen |
| |||
F11 | switching | — | |||
within 30 minutes | abnormal | ||||
| abnormality |
| |||
|
|
|
| ||
|
|
|
| Wrong wiring and | |
F17 | Indoor standby units | 3 times happen |
| connecting pipe, expansion | |
— | valve leakage, indoor heat | ||||
freezing abnormality | within 40 minutes | ||||
|
| exchanger sensor open | |||
|
|
|
| ||
|
|
|
| circuit | |
|
|
|
|
| |
| Power factor |
|
|
| |
F90 | correction | 4 times happen | — | Power factor correction | |
(PFC) circuit | within 10 minutes | circuit abnormal | |||
|
| ||||
| protection |
|
|
| |
F91 | Refrigeration cycle | 2 times happen | — | Refrigeration cycle | |
abnormality | within 20 minutes | abnormal | |||
|
| ||||
F93 | Compressor | 4 times happen | — | Compressor abnormal | |
abnormal revolution | within 20 minutes | revolution | |||
|
| ||||
| Compressor | 4 times happen |
| Compressor discharge | |
F94 | discharge overshoot | — | |||
within 30 minutes | pressure overshoot | ||||
| protection |
| |||
|
|
|
| ||
F95 | Outdoor cooling high | 4 times happen | — | Cooling high pressure | |
pressure protection | within 20 minutes | protection | |||
|
| ||||
| Power transistor | 4 times happen |
| Power transistor module | |
F96 | module overheating | — | |||
within 30 minutes | overheat | ||||
| protection |
| |||
|
|
|
| ||
| Compressor | 3 times happen |
|
| |
F97 | overheating | — | Compressor overheat | ||
within 30 minutes | |||||
| protection |
|
| ||
|
|
|
| ||
F98 | Total running current | 3 times happen | — | Total current protection | |
protection | within 20 minutes | ||||
|
|
| |||
|
|
|
|
| |
| Outdoor direct | Continuous |
| Power transistor module | |
F99 | current (DC) peak | — | |||
happen for 7 times | current protection | ||||
| detection |
| |||
|
|
|
|
Check location
Check indoor heat exchanger
Air filter dirty
Air circulation short circuit
Check indoor heat exchanger
Air filter dirty
Air circulation short circuit
Lead wire and connector
Check indoor/outdoor connection wire and pipe
Indoor heat exchanger sensor lead wire and connector
Expansion valve lead wire and connector
Outdoor PCB faulty
Insufficient refrigerant or valve close
Power transistor module faulty or compressor lock
Check refrigeration system
Check refrigeration system
Outdoor air circuit
PCB faulty
Outdoor air circuit (fan motor)
Insufficient refrigerant
Check refrigeration system
Power source or compressor lock
Power transistor module faulty or compressor lock
54
