Prevention To Restart For 3 Minutes (3 Minutes St); 4-Way Valve Control; Peak Cut Operation - Fujitsu AUXG18KVLA Service Manual

 During heating mode or fan mode and when operation is stopped
• Triggering condition
Drain pump is turned on at the same time that the float switch is turned on.
• Operation details
When the float switch turns on continuously for 3 minutes, "failure indication" operates. There-
after, even if the float switch turns off, the "failure indication" is not released. (It is necessary to
turn off power for release it. )
• Release condition
Drain pump operates continuously for 3 minutes after the float switch is turned off and then
drain pump is turned off.

7-9. Prevention to restart for 3 minutes (3 minutes st)

When the compressor fails to start for the number of times below, it does not enter operation status
for 3 minutes.
Retry number
Retry set number
When the compressor fails to start in the retry set number above, the compressor is stopped.

7-10. 4-way valve control

• If heating mode is selected at the compressor start, 4-way valve is energized for heating.
• When the air conditioner is switched between cooling and heating mode, compressor is stopped,
and the 4-way valve is switched when the 3 minutes passes and the compressor is started.

7-11. Peak cut operation

The current value is limited to reduce the power consumption by external input.
Peak cut level
Peak cut for rated capacity
NOTES:
• During defrost operation, peak cut operation becomes invalid.
• Even during the peak cut operation, the operations of current overload, economy, and low noise
are effective and the outdoor unit operates by lowest current of them.
7-8. Drain pump control
On
Float switch
Off
On
Drain pump
Off
Level 1
Forced thermostat
off
Level 2
50%
- (04-32) -
3 minutes
30
3
Level 3 Level 4
75% 100%
7. Various control