Electronic Circuit Diagram - Panasonic CW-A90VE Service Manual

12 Electronic Circuit Diagram

12.1. Deicer Schematic Diagram
12.2. Deice Operation Details.
• • • • To prevent frosting at outdoor heat exchanger (Condenser)
during heating operation.
− − − − Deice operation;
1. Deice operation detection commences in heating
operation starts or 60 minutes after previous deice
operation. If the outdoor piping temperature drops to
-1.5°C continuously
operation, deice will start.
− − − − Deicing ends when;
1. 12 minutes after deicing operation starts; or
2. The outdoor piping temperature rises to about 16°C.
− − − − After deicing operation, compressor stops for 30
seconds and 4-way valve stays at cooling position for 10
seconds.
during compressor is in
12.2.1. Deicing Time Diagram.
19
CW-A90VE / CW-A120VE