Fujitsu AOU12RL2, ASU12RL2, AOU09RL2 manual Heating Operation, DRY Operation

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2. HEATING OPERATION

A sensor (room temperature thermistor) built in the indoor unit body will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor.

*If the room temperature is lower by 3°C (6°F) than a set temperature, the compressor operation frequency will attain to maximum performance.

*If the room temperature is some degrees higher than a set temperature,

the compressor will be stopped.

*When the room temperature is between +2.5°C (+5°F) to -3°C (-6°F) of the setting temperature, the compressor frequency is controlled within the range shown in Table 3.

However, the maximum frequency is limited shown in Table 4 based on the fan mode.

( Table 3 : Compressor frequency range )

		Minimum	Maximum
		frequency	frequency

	AOU09RL2	18rps	80rps
	AOU12RL2	18rps	120rps
	AOU12RL2		120rps

( Table 4 : Limit of maximum speed based on outdoor temperature )

		Indoor fan mode

		Hi	Me	Lo	Quiet	Auto
AOU09RL2				80rps
AOU12RL2				120rps

3. DRY OPERATION

The compressor frequency shall change according to the temperature, set temperature,

and room temperature variation which the room temperature sensor of the indoor unit body has detected as shown in the Table 5.

However, after the compressor is driven, the indoor unit shall run at operation frequency of (09 : 52 rps, 12 : 61 rps) for 60 seconds.

( Table 5 : Compressor frequency in Dry mode)

		Operating
		frequency
AO09RL2	X zone	30rps
	J zone	28rps
	Y zone	0rps

		Operating
		frequency
AO12RL2	X zone	33rps
	J zone	25rps
	Y zone	0rps

( Fig.2 : Compressor control based on room temperature )

		When the room
When the room		temperature rises
temperature drops			Ts+1.5°C (Ts+3°F)
temperature drops

Ts+0.5°C (Ts+1°F)	X zone
Ts+0.5°C (Ts+1°F)			Ts -0.5°C (Ts-1°F)
			Ts -0.5°C (Ts-1°F)
Ts -1.5°C (Ts-3°F)	J zone
Ts -1.5°C (Ts-3°F)
	Y zone
	Y zone

01-02

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Contents Service Instruction Contents Appending Data Page Wall Mounted type Cooling Operation DRY Operation Heating Operation01-03 Auto Changeover OperationCooling Operation Indoor FAN ControlFan speed FAN OperationMoisture Return Prevention Control Cooling mode& Dry mode Cool AIR Prevention Control Heating modeHeating Operation Outdoor Fan Motor Outdoor FAN ControlFunction Range Adjust the RIGHT-LEFT LouversLouver Control Vertical Louver ControlOpeartion Frequency Control AT Normal Start UP Limitation of Compressor Frequency by Outdoor TemperatureCompressor Control Opeartion Frequency RangeProgram Timer Timer Opeartion ControlCooling operation mode Sleep TimerHeating operation mode 24C 75F Prevent to Restart for 3 Minutes 3 Minutes STFOUR-WAY Valve Extension Select Auto RestartEconomy Operation Powerful OperationForced Cooling Operation Test Operation Compressor PreheatingRelease Condition Defrost Operation ControlCondition of Starting the Defrost Operation Condition of the Defrost Operation CompletionNormal defrost Integrating defrost Defrost Flow Chart01-14 Defrost end 01-15 OFF Defrost Opeartion Control01-16 Discharge GAS Temperature Overrise Prevension ControlVarious Protections Current Release ControlHigh Temperature Release Control Heating Mode Antifreezing Control Cooling and Dry modeCooling Pressure Overrise Protection Trouble Shooting Error Display TroubleshootingCheck Point 4 Check Serial Signal Reverse Transfer Signal Trouble Shooting with Error CodeOutdoor unit Main PCB Indoor unit Controller PCB Indoor unit Fan motor Check Point 3 Replace Controller PCB Indoor unit Controller PCBCheck Point Check Indoor unit electric components Check Point Check external cause such as noiseCheck Point 2 Replace Controller PCB Indoor unit Controller PCB Indicator PCB Manual auto switchIndoor unit Controller PCB Room temperature thermistor Indoor unit Controller PCB Heat Ex. temperature thermistor Check Point 3 Check Indoor unit fan motor Check Point 2 Check ambient temp. around motorCheck Point 1-2 Check external cause Check Point 2 Replace Main PCBCheck Point 3 Replace Main PCB Check Point 2 Check connection of Connector02-11 CN71 CN70 Outdoor unit Main PCB Discharge pipe temperature thermistorResistance Value k 606 759 213 8531 Outdoor unit Main PCB Heat exchanger temperature thermistorOutdoor unit Main PCB Outdoor temperature thermistor Check Point 4 Replace Main PCB Check Point 2 Check Heat exchanger Outdoor unit Main PCB CompressorCheck Point 3 Check Compressor Check Point 3 Replace Main PCB Check Point 3 Check Outdoor unit fan motor Outdoor unit Main PCB Outdoor unit Fan motorCheck Point 4 Check Output Voltage of Main PCB Check Point 3 Check the solenoid coil and 4-way valve Check Point 2 Check each thermistorForecast of Cause Indoor Unit No Power Trouble Shooting with no Error CodeCheck Point 3 Check Electrical Components Outdoor Unit No Power 02-23 Check Point 3 Check Site condition Check Point Check Indoor/ Outdoor installation conditionNo Cooling / No Heating Check Point 2 Check Outdoor unit operationWater Leaking Abnormal NoiseCompressor Service Parts InformationReplace Compressor Inverter Compressor Blue Red Outdoor unit Electronic Expansion Valve EEVCheck Point 5 Check Opening and Closing Operation of Valve Outdoor unit fan motor Indoor unit fan motorPage Appending Data Heating Room Temperature Correction Function SettingSetting the Filter Sign Cooling Room Temperature CorrectionRemote controller signal code Setting the Auto RestartYes Procedures to change the Function Setting for wireless RC Selecting the Function Number and Setting Value Remote Controller Signal Code Setting Discharge thermistor Room temperature thermistorPage 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan