koppel KV24 ODU-ARF21C Service Manual page 10

Features
Built-in draining pump
1.5
 Due to improvement of structure, it is now more convenient to repair and replace the drain pump.
 With built-in pump to make sure condensed water drain out reliably.
Terminals for alarm lamp and long-distance on-off controller connection are
1.6
standard
 Reserved terminals for the connection of alarm lamp and long-distance on-off controller, more control
options.
8
Drain Pump
Indoor Units