Airwell ONG3-17 R410A, Service Manual

Page: 67 / 127

CONTROL SYSTEM
Service Manual-CN Fixed RPM series
12-32
12.8.3 Indoor Condensation Pump (ICP) Operation and Overflow
Protection (NFC Model)
Mode: Cooling, Dry, Auto (at Cooling)
Temp: Desired temp selected
Fan: Any
Timer: Any
I Feel: On or Off
Control function:
To prevent the overflow of condensed water by turning ON the ICP.
Water Level
ANY
OFF
BLINK
COMP
& OFAN
Filter : Oper
PXD : NFC
P2000
MBX
LEVEL1
LEVEL2&3
LEVEL4
NORMAL
ON
ICP
OFF
Notes:
1. When water level reaches LEVEL 4, ICP will be turned ON even if the unit is in SB
mode, Heat, and Auto Heat modes.
2. Under normal operation, at least one of the water level inputs must be active. If
all LEVEL1, LEVEL2&3 and LEVEL4 are inactive, it is assumed that the
connection has been broken and the ICP will be turned ON when the unit is
operating in Cool or Dry mode.
3. The operation of the pump is not related to the ON/OFF state of the COMP. On the
contrary, the COMP can be forced to OFF when the water level is high (level 4).