CS-W12CTP CU-W12CTP5 / CS-W18CTP CU-W18CTP5 / CS-W24CTP CU-W24CTP5
2) W18CT, W24CT
Deice starts to prevent frosting at outdoor heat exchanger.
• • • • Normal Deicing
Deice operation detection commences in Heating operation starts or 60 minutes after previous deice operation. If the
outdoor piping temperature drops to -4°C for 50 sec. continuously during compressor is in operation, deice will start.
(There is no detection during Outdoor Fan stops.)
• • • • Overload Deicing
During heating operation, if the outdoor Fan OFF duration (due to overload control) is accumulated up to 60 minutes and
after compressor starts for 1 minutes, deicing starts.
• • • • Deicing ends when
(a) 12 minutes after deicing operation starts;
(b) The outdoor piping temperature rises to about 12°C.
• • • • After deicing operation, compressor stops for 30 seconds and 4-way valve stays at cooling position for 10 seconds.
a) Normal Deicing Time Diagram
30