Lennox Y6334, Руководство по обслуживанию

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Technical Information
Service Manual
angle will be the same as in normal defrosting mode. When compulsory defrosting is finished, the complete unit resumes
original status.
7. Auto mode
Auto mode is determined by controller of IDU. See IDU logic for details.
8. 8
O
C heating
Set temperature is 8
O
C. Display board of IDU displays 8
O
C. Under this mode, “Cold air prevention” function is shielded.
If compressor is operating under this mode, fan speed will adjust according to auto fan speed; if compressor stops operation
under this mode, indoor fan will be in residual-heat blowing status.
When power on, communication light will be blinking in a normal way (after receiving a group of correct signals,
blinking stops for 0.2s~0.3s). If there’s no communication, communication light will be always on. If other ODU has
malfunction, communication light will be on for 1s and off for 1s in a circular way.