MOOVAIR TM08CEM9115S, Service Manual

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4
2 Electronic function
2.1 Terms and definitions
 TA: Temperature of indoor ambient (T1)
 TE: Temperature of evaporator (T2).
 TS: The set temperature.
 DAHT: Sensor of heater
2.2 Protection function
 The compressor restart protection functions with a delay of 3 minutes.
 5 minutes operation for compressor(this function is for cooling and heat pump mode)
 Sensor protection at open or short circuit.
2.3 Auto mode
 At Auto mode, the unit will choose cooling, heating or fan-only mode according to ΔT =TA-Ts)
ΔT=TA-Ts Running mode
ΔT
＞
4

F Cooling
-2

F≤ΔT≤4

F Fan-only
ΔT<-2

F Heating (Setting temperature is TS-1

F);
Or Fan-only (for cooling only models).
 The unit will choose actual operation mode in auto mode in the below cases:
 Power on or change mode to auto mode or adjust temperature in auto mode, the unit will choose actual
running mode again.
 A: On auto mode, if the compressor keeps not running for 15 minutes. judge condition B
B: If ΔT<-8
℉
or ΔT
＞
2
℉
, the unit will choose actual running mode again according to ΔT till the
compressor stops.
2.4 Fan-only mode
 The temperature can’t be controlled at the mode, and the room ambient temperature is display on LED.
 The Ion/ Timer functions are valid at the fan-only mode.
And follow me function (for some models) is invalid at fan-only mode.
2.5 Cooling mode
 The temp can be set from 62 to 86
℉
(17 to 30
℃
)
 The compressor will be activated by sensing the difference between setting temperature and the actual
ambient room temperature.
The compressor operates as below: