Operation Section
25
(4) Compressor time delay control (compressor protection)
• Compressor protection consists of a time delay program within the microprocessor. This
program prevents a heavy load from being applied to the compressor motor when restarting the
unit (cool mode) after a very short period of time. This “delay” is in effect any time the
compressor is turned on by either the COOL ON/OFF button, or power interruption restart
(automatic recovery.)
Specifications:
- Time Delay: 120 seconds
(5) Automatic restart and recovery function
• The microprocessor contains a feature that automatically restart the unit after power is lost and
regained, and also has memory to store and recover operation status in the event of a power
loss.
Status of memory during power interruption
• When the input power is off, the status items below are saved in the memory.
- Running status (on or off)
- Operating mode: Cool mode or fan only mode
- Set temperature
- Temperature mode (°F or °C)
- Fan mode: Fan operation mode (fan on) or fan stop mode (fan auto)
I001688
[Example]
1st Time (After initial set up, reset circuit breaker, etc.)
Compressor turns off and on immediately (within 120 sec.)
Delay Time
(120 sec.)
No Delay Time
(Less than 5 sec.)
No Delay Time
(less than 5 sec.)
Delay Time
(120 sec. after last turn off)
Compressor turns off and on more than 120 sec. later
Turn ON
Controller
Status
Compressor
Status
(52CM)
ON
OFF
ON
OFF
Stop
(for Extended Period)
Reference: Initial turn on
Within: 120 sec. after (the power cord is connected to) the power supply, the compressor will start with delay timer.
After: 120 sec. since (the power cord was connected to) the power supply, the compressor will start without delay timer.
