Panasonic CS-RE9NKE Service Manual page 38

13.1.4 IPM (Power transistor) Protection Control.
1. DC Peak Current Control
● When electric current to IPM exceeds set value of 7A(for RE9NKE),15.7A(for RE12NKE), or 19.3A(for
RE15NKE) the compressor will stop. It will restart after three minutes.
● If the set value is exceeded again within 30 seconds, the operation will restart after one minute.
● If this condition repeats continuously for seven times, all indoor and outdoor relays will be cut off.
● Error code [F99] will be displayed.
2. Overheating protection control
When the IPM temperature rises to 120 ℃ , compressor will stop immediately.
Compressor restarts after three minutes if the temperature decreases to 110℃
13.1.5 Compressor Overheating Prevention Control
Instructed frequency for compressor operation will be regulated compressor discharge temperature. The change of
frequency is as below.
RE9NKE
13.1.6 Low Operation Frequency Protection Control
When the compressor operate frequency lower than 24Hz continued for 240 minutes, the operation frequency will
●
be changed to 23Hz for 2 minutes.
13.1.7 Low Operation Frequency Protection Control
If all following conditions exists, the compressor will run with the frequency of 30 Hz.
Models
Intake Air Temp.
Outdoor Temp.
Indoor Piping Temp.
Operation Mode
13.1.8 Low Pressure Prevention Control (Gas Leakage Detection)
a. Control start conditions
• For 5 minutes, the compressor continuously operates and outdoor total current is between 1.88A and 2.85A.
• During Cooling and Soft Dry operations:
Indoor suction temperature - indoor piping temperature is below 4℃.
Indoor temperature and outdoor temperature is 30±5℃.
Remote Control setting 16℃ and Hi Fan Speed.
• During Heating operations:
RE9NKE, RE12NKE,RE15NKE
≥ 30 ℃ or ＜ 14 ℃ ≥ 28 ℃ or ＜ 14 ℃
≥ 38 ℃ or ＜ 13 ℃ ≥ 24 ℃ or ＜ 4 ℃
＜ 30 ℃ ≥ 0 ℃
Cool / Dry Heat
38
RE12/15NKE