Gree HNTF24/A-D

8
Condensing Unit
Service Manual
CONTROL
2 MAIN LOGIC
2.1 Cooling Mode (for Cooling Only and Heat Pump)
The temperature of condensing unit is set at the wired controller equipped by users
When the control-board of the outdoor unit detects the ON signal from wired controller, it will enter cooling
ON sub mode, and compressor, outdoor fan will start running synchronously.
When control-board detects the Stop signal from wired controller, it enters cooling Stop sub mode and the
compressor and outdoor fan stop synchronously.
When control-board detects the OFF signal from wired controller, it enters the cooling OFF sub mode and
compressor and outdoor fan stop synchronously.
Cooling only
Cooling ON Sub Mode Flowchart:
Cooling ON signal is
sent out from wired
controller
Electrity
Compressor
Outdoor fan
Object
Time
Cooling Stop Sub Mode Flowchart:
Object
Compressor
Outdoor fan
OFF
OFF
ON
ON
Time
Stop signal is sent out
from wired controlle
r