Airwell AWAU-YCZ218-H11, Service Manual

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Troubleshooting
Electrical Control System 151
2.1.3 Icon explanation on indoor display board (Compact cassette).
2.1.4 Icon explanation on indoor display board (Console)
FUNC
2.1.5 Outdoor unit’s digital display tube
There is a digital display tube in outdoor PCB.
Digital display tube display function
 In standby , the LED displays “- -”
 In compressor operation, the LED display the running frequency,
 In defrosting mode, The LED displays “dF” or alternative displays between running frequency and
“dF”(each displays 0.5s)
 In compressor pre-heating, The LED displays “PH” or alternative displays between running frequency
and “PH”(each displays 0.5s)
 During the oil return process, The LED displays “RO” or alternative displays between running
frequency and “RO”(each displays 0.5s)
 In low ambient cooling mode, the LED displays “LC” or alternative displays between running
frequency and “LC”(each displays 0.5s)
 In forced cooling mode, the LED displays “FC” or alternative displays between running frequency and
“FC”(each displays 0.5s)
 When PFC module protection occurs three times within 15 minutes, the LED displays “E6” or
alternative displays between running frequency and “E6”(each displays 0.5s)
 In protection or malfunction, the LED displays error code or protection code.
Temporary button
PRE-DEF indicator(cooling and
heating type)
or fan only indicator(cooling only
type)
Infrared signal receiver
Operation temp. Timer indicator
Alarm indicator
PRE-DEF indicator(cooling and
heating type)
or fan only indicator(cooling only
type)
Operation temp.
Timer indicator
Infrared signal receiver
Temporary button