Fujitsu General AOHG45KRTA, Service Manual, Page: 114 / 154

6-8. Drain pump control
¢
Drain control for cooling operation

During the compressor in operation
• Triggering condition
The thermostat is turned on during cooling or dry mode.
• Operation details
The drain pump is turned on.
• Release condition
– The thermostat is turned off.
Refer to " When the compressor is not in operation " for the operation after release.
– The compressor is stopped.
Refer to " When the compressor is not in operation " for the operation after release.
– The operation is switched to heating mode.
Refer to " When the compressor is not in operation " for the operation after release.
– The float switch is turned on.
Refer to " Overflow control " for the operation after release.
– The compressor is stopped by Anti-freezing control.
Refer to " The compressor is stopped by Anti-freezing control " for the operation after re-
lease.

When the compressor is not in operation
• Triggering condition
– The thermostat is turned off.
– The compressor is stopped.
– The operation is switched to heating mode.
– The float switch is turned off.
• Operation details
– Count 180 minutes.
– Start drain pump intermittent operaion.
On
Off
Drain pump
3 min 3 min 3 min
Trigger point
(0 min)
3 min
10 min 60 min 180 min
• Release condition
– 3 minutes drain pump operation is finished after 180 minutes count.
– The operation is switched to cooling or dry mode.
Refer to " During the compressor in operation " for the operation after release.
– The float switch is turned on.
Refer to " Overflow control " for the operation after release.
• Operation after release
The drain pump is turned off and the air conditioner operate according the settings.
6-8. Drain pump control
- (04-20) -
6. Various control
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS