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Function & Control
16
2.8 Thermistors in ARXN/RXN_L/M, RXB_B
INDOOR UNIT
OUTDOOR UNIT
COOLING OPERATION
HEATING OPERATION
PIPING
LIQUID
PIPING
GAS
2 WAY
VALVE
3 WAY VALVE
4 WAY VALVE
STRAINER
STRAINER
ELECTRONIC
EXPANSION VALVE
ACCUMULATOR
COMPRESSOR
AIR
THERMIST
OR
AIR
THERMIST
OR
HEA
T
EXCHANGER
(INDOOR UNIT)
HEA
T
EXCHANGER
(OUTDOOR UNIT)
HEA
T
EXCHANGER
THERMIST
OR
HEA
T
EXCHANGER
THERMIST
OR
DISCHARGE PIPE
THERMISTOR
Functions of Thermistor
Thermistor
Functions
Discharge pipe
Used for discharge superheat (SH) & Electronic Expansion Valve (EXV) control.
Outdoor coil
Used for defrost control. Also used for inverter current protection control in Series II.
Outdoor air
Used for defrost & outdoor fan speed control. Also used for overall current protection
& preheating operation control.
Heat sink
Used for capturing heat sink temperature. (Applicable for Daikin controller)
Suction pipe
Used for Electronic Expansion Valve (EXV) & suction pipe (SH) protection control in
heating.
2.9 Minimum Off Time Control
To prevent frequent compressor ON/OFF & to allow pressure equalization
• The compressor will be on 3 minutes stand-by after turning OFF before it is allowed to turn ON.
• OD fan OFF delay to improve pressure equalization & to prevent refrigerant from entering into evaporator.
Содержание ARXN25MV1B
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