Outdoor Air Temperature Control; Cooling Overload Control - Panasonic CS-XE9CKE Service Manual

8.2.2. Protection Control For Cooling & Soft Dry Operation
8.2.2.1.

Outdoor Air Temperature Control

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.
8.2.2.2.

Cooling Overload Control

i. Pipe temperature limitation/restriction
• • • • Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)
• • • • The compressor stop if outdoor pipe temperature exceeds 62°C
• • • • If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)
8.2.2.3. Anti-Freezing Control
1. When indoor heat exchanger temperature is lower than 2°C continuously for six minutes, compressor will stop operating.
2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 10°C.
3. At the same time, indoor fan speed increase +40 rpm compared to its normal operation.
4. If indoor heat exchanger temperature is higher than 10°C for five minutes, the fan speed will return to its normal operation.
33
CS-XE9CKE CU-XE9CKE / CS-XE12CKE CU-XE12CKE