Main part explanation:
No. Main Part Nam e Specificati on For what purpose?
1 Heater 220V, 35W Heat up the compressor when system stops to avoid liquid compressing and liquid flood-back
2 Compressor dc inverter Drive the system to realize the refrigerant circulation
3 Td sensor
50K@80
@
For target SH control and high discharge temprature protection
4 HP switch 4.5 / 3.7Mpa Cut off the system when discharge pressure is too high to protect system
5 4-WAY valve / Cooling / heating swtiching
6 Toci sensor
10K@25
@
For target super heating control when heating
7 Tc sensor
10K@25
@
For high pressure/ frequency/ outdoor fan speed control when cooling
8 Tao sensor
23K@25
@
For target frequency range and heater control
9 Te sensor
10K@25
@
For defrost operation and low pressure control when heating
10 PMVs 1.5mm, 500PLS Refrigerant distributioin and target SH(cooling) and SC(heating) control
11 LP switch 0.05 / 0.15Mpa Cut off the system when suction pressure is too low or system serious leakage to protect system
12 Accumulator 1.5L Separate the liquid refrigerant and gas refrigerant in suction line to avoid liquid flood-back
13 Ts sensor
10K@25
@
To calculate the target SH and SC, and control the start up of the compressor
14 Tc2
10K@25
@
To calculate the real super heating value together with Tout to operate the PMVs, for target
compressor frequency control and low pressure protection when cooling
15 Tm
10K@25
@
To calculate the real super cooling value together with Tin to operate the PMVs, for target compressor
frequency control and high pressure control when heating
16 Tc1
10K@25
@
To calculate the real super heating value together with Tin to operate the PMVs
17 Tai
23K@25
@
To calculate the temperature difference between the inlet and outlet of the indoor unit to control the
target rrequency and THERMO. ON or OFF.
-46-
Commercial Air Conditioner Model: AU18/222XFERA
AS072/092/122XVERA
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