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10-1. PRE-HEAT CONTROL
If moisture gets into the refrigerant cycle, or when refrigerant is liquefied and collected in the compressor, it may interfere
the startup of the compressor.
To improve start-up condition, the compressor is energized even while it is not operating.
This is to generate heat at the winding.
The compressor uses about 50 W when pre-heat control is turned ON.
Pre-heat control is ON at initial setting.
[How to deactivate pre-heat control]
Turn OFF the power supply for the air conditioner before making the setting.
Set the "4" of SW2 on the outdoor control P.C. board to ON to deactivate pre-heat control function.
Turn ON the power supply for the air conditioner.
NOTE: Pre-heat control will be turned OFF when the breaker is turned OFF.
SERVICE FUNCTIONS
10
NTXMMX20A122AA NTXMMX24A132AA NTXMMX30A132AA NTXMMX36A142AA
NTXMMX42A152AA
NTXMPH20A122AA NTXMPH24A132AA NTXMPH30A132AA
Outdoor control P.C. board
SW871
LED
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