Airwell CDMX-022N-09M25, Service Manual

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22
8.
Electronic function
8.1 Abbreviation
T1: Indoor room temperature
T2: Indoor evaporator temperature
T2B: Coil temperature of indoor heat exchanger
outlet(This sensor is located in outdoor unit)
T3: Coil temperature of outdoor heat exchanger
T4: Outdoor ambient temperature
T5: Compressor discharge temperature
Ts: Setting temperature
Tsc: Adjusted setting temperature
8.2 Icon explanation on indoor display
board
8.2.1 Four-way cassette (compact)
8.2.2 New Four-way cassette
8.2.3 A6 Duct
OPERATION TIMER DEF./FAN
ALARM
Temporary button
Operation lamp
Timer indicator
Infrared signal receiver
Alarm indicator
PRE-DEF indicator(cooling and heating type)
or fan only indicator(cooling only type)
MANUAL
Display digital tube
8.2.4 New Console
8.3 Main Protection
8.3.1 Three minutes delay at restart for
compressor.
8.3.2 Sensor protection at open circuit and
breaking disconnection.
8.3.3 Indoor fan delayed open function
----When system starts up, the louver will be active
immediately, and the indoor fan will open 7s later.
----If the system runs in heating mode, the anti-cold
wind function has priority.
8.3.4 Inverter module protection
The Inverter module has a protection function about
current, voltage and temperature. If these
protections happen, the corresponding code will
display on indoor unit and the unit will stop working.
8.4 Operation Modes and Functions
8.4.1 Fan-only mode
(1) Outdoor fan and compressor stop.
(2) Indoor fan can be set to high/med/low/auto or
1%-100%.
(3) The louver operates same as in cooling mode.
(4) Auto fan in fan-only mode, AC operates the
same as auto fan in cooling mode with the
temperature set at 24
o C.
8.4.2 Cooling mode
8.4.2.1 Outdoor fan running rules