Airwell AWAU-YDDE009-H11, Service Manual

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12-10
SM HDDE 1-A.1 GB
limitation and prevent abnormal high pressure.
CONTROL SYSTEMS
For Model 09/12: Compressor will stop when ICT reaches 62C
For Model 18/24, Compressor will stop when ICT reaches 64C
If the unit stops as such protection for 6 times, it can not resume running automatically and display
the error code E8 , it can resume by pressing ON/OFF.
During the operating, If compressor operates for more than 10min, the counter of stop operation
due to protection will be cleared.
12.11.4 Outdoor Coil Overheating protection (Cool/Dry Mode):
During heating operation, the ODU Coil Overheating Protection is detected by temperature sensor
OCT.
For Model 09/12: Compressor will stop when OCT reaches 62C
For Model 18/24, Compressor will stop when OCT reaches 65C
If the unit stops as such protection for 6 times, it can not resume running automatically and display
the error code E8 , it can resume by pressing ON/OFF.
During the operating, If compressor operates for more than 10min, the counter of stop operation
due to protection will be cleared.
12.11.5 Compressor over Current Protection
Detect an input current by the CT during the compressor is running, and set the frequency upper
limit from such input current. In case of heat pump model, this control is the upper limit control
function of the frequency which takes priority of the lower limit of four way valve activating
compensation.
Detail
Model 09/12: Compressor will stop when AC current reaches 14.0A for continuously 2.5s.
Model 18/24: Compressor will stop when AC current reaches 17.0A for continuously 2.5s.
If the unit stops as such protection for 6 times, it can not resume running automatically and display
error Code E5 , it can resume by pressing ON/OFF.
During the operating, If compressor operates for more than 10min, the counter of stop operation
due to protection will be cleared.
12.11.6 Outdoor Coil Deicing Protection
This protection is for Heat Pump Only
This protection is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor
heat exchanger temperature must be more than its setting values when finishing the deicing
protection.
In the deicing protection, IFAN is forced OFF.