Special Control | Sanyo CHDX07263, CHDXR07263, CHDXR09663, CHDX09663

10. Indoor Unit Control of the Electronic Control Valve

W-2WAY ECO-i SYSTEM Control Functions

10-2. Special Control

1

Control

4-way valve adjustment control

Reverse cycle defrost control

Outdoor cycle defrost control

System refrigerant oil recovery control

	Operating	Subject indoor units			Position of electronic control valve
	mode	Subject indoor units			Position of electronic control valve
	mode
	Cooling		All indoor units		Fixed pulse for cooling, according to indoor unit
	Cooling		All indoor units		capacity
					capacity

	Heating		All indoor units		250
				Stopped	Cooling control, according to indoor unit capacity
				Fan	Cooling control, according to indoor unit capacity
	Heating	Heating		Thermostat	Fixed pulse for heating, according to indoor unit
		Heating		ON	capacity
				ON	capacity

				Thermostat	Heating control, according to indoor unit capacity
				OFF	However, position is 20 pulses for Type D.

				Stopped	60 pulses
				Fan	60 pulses
	Cooling/	Heating		Thermostat	60 pulses
	heating			ON	60 pulses
	heating			ON	60 pulses
				Thermostat
				OFF

	Cooling		All indoor units		Fixed pulse for cooling, according to indoor unit
	Cooling		All indoor units		capacity
					capacity
	Heating		All indoor units		250

1 - 22

Image 27

Sanyo CHDX07263, CHDXR07263, CHDXR09663, CHDX09663 service manual Special Control

Contents

Indoor Units Outdoor Units Please Read Before Starting Check of Density Limit Contents Trouble Diagnosis Control Functions Required settings for Test Run IntroductionOutdoor unit No.1 Outdoor Unit Stop Rules Delayed Start of Outdoor UnitsSelecting an Outdoor Unit for Operation Outdoor Unit Operating Rules Type Compressor ControlCompressor Selection Rules Capacity Roadmap Control Compressor Capacity ControlInverter Compressor Capacity Control Forced Compressor Stop Compressor Control Protection control Roadmap Control after Trip Start of System Refrigerant Oil Recovery Control Way Valve Adjustment ControlSystem Refrigerant Oil Recovery Control System refrigerant oil recovery cycle Constraint conditions Refrigerant Oil Recovery Control between SystemsDefrost Control Defrost Methods Outdoor units where defrost occurs Frost detectionReverse Cycle Defrost OFF Outdoor unit cycle defrost System defrost end Defrost end judgment conditions Oil Control Other Controls Operation of Solenoid Valves Refrigerant Control Valve RCVRefrigerant Balance Valve RBV Gas Purge Valve Bypass Valve BPV Recovery Valve Orvr Power Initialization Types of Electronic Thermostatic Expansion ValvesCHDX07263, CHDX09663 SC Circuit Electronic Control Valve MOV4 Outdoor Fan Control Demand Control Demand setting Control Demand meaning Heating operation Indoor Unit Control of the Electronic Control ValveNormal Control Cooling operation Special Control Gas tube valve Electronic thermostatic Expansion valve Rap Valve Kit Control Indoor Unit Refrigerant Oil Self Recovery Control Compressor No Discharge TemperatureDischarge temperature protection list Discharge sensor failure list Current Protection Pressure Sensor Failure Backup Operation Automatic Backup OperationManual Backup S010 switch S010 Compressor 1 backupCompressor 2 backup Setting Description Service Maintenance FunctionsThis setting controls the operation of the drain pump Setting Max. fan mode Effect Amount of capacity reduction Speed Setting OperationSetting No Compatible static pressure psi Set at outdoor units that include CCU functions Snowfall Sensor Functions Outdoor Eeprom Other Functions Outdoor unit PCB LED indications in judgment mode Symptoms of insufficient gasSymptoms of overcharge Memo Outdoor Unit Repair Procedures Removing Panels Procedures Removing Electrical Component Box and Duct Remove the upper duct remove 3 screws Fig Remove the lower duct remove 2 screws, and a hook Checking the Oil Discharging Compressor OilDischarging Oil from Oil Separator Discharging Oil in Compressor If the failed outdoor unit is not the No unit Automatic BackupBackup operation by disconnecting the outdoor unit Switch on outdoor unit control PCB Action If the failed unit is the No outdoor unit main unit INV compressor AC1 compressor Setting for backup operation Backup operation settings for each compressor Following equipment and tools are required Recovering RefrigerantRefrigerant Recovery Procedures from outdoor unit Carry out refrigerant recovery Cooling operation for all units Refrigerant Recovery Procedures Indoor Unit Unit Recovering Refrigerant Recovery of Refrigerant from Entire System Pressure Check for Leakage of Outdoor Unit Checking for Leakage After Repair Evacuating Repaired Outdoor Unit Evacuating System If Refrigerant Has Already Been Charged to Outdoor Unit Charging Compressor Oil DPR If Outdoor Unit Has Not Been Charged with Refrigerant JT160G-KTTJ Pumping Out Refrigerant from Outdoor Unit Pumping Out Refrigerant from Outdoor Unit Faulty outdoor unit Other outdoor unit Refrigerant recovery unit Compressor Trouble Diagnosis and Check Methods Compressor Compressor Replacing all compressors in a failed unit Replacing all compressors in a system If a ball valve is installed on the outdoor unit Dry core cleaning Cleaning dry core If a ball valve is not installed on the outdoor unit Removing and Installing Compressors Replacing compressorsRemoval Installation Front view Type Compressor Compressor Replacing multiple compressors Removal Installing the High and Low Pressure Sensors High and Low Pressure SensorsRemoving the High and Low Pressure Sensor Protect the check valves as shown in the figure Replacing 4-way Valve Replacing 4-way Valve Memo Outdoor Unit Maintenance Remote Controller Overview NN About the outdoor unit maintenance remote controllerService Checker Section System diagram Functions NN Temperature monitorNN Outdoor unit alarm history monitor NN Mode settings NN Functions on the ordinary display Double-speed All units start/stop FigCooling/heating change Fig All units test run Fig Item code Remarks NN Display functions Sample displays Locations where Œ, , and Ž are displayed as shown in Fig Display of unit Nos − Meaning of display colonIs not displayed Monitoring Operations Indoor unit NN Display of unit No main unit Operating procedure Outdoor Unit Alarm History Monitor B are displayed alternately Mode SettingsSetting mode 1 Operating procedure Display of ﬁrst 4 digits Display of last 4 digits List of Item Codes Setting mode 2 Operating procedure Memo Remote Controller Functions Simple Settings Function ProcedureRemote Controller Functions Section Item code Setting data Description List of Simple Setting Items Detailed Settings Function Setting data Item code Description List of Detailed Setting Items Minutes No forced operation DC fan tap operating Purpose Mode Filter sign on times for each model Simple setting items Explanation of operation mode priority change Enabled only in 2WAY Multi heat-pump modelsFunction Cooling or dry Heating Fan Fan not changed Detailed Settings Function Setting range Drying From previous List of Servicing Functions Remote Controller Servicing Functions Procedure Test Run FunctionOperates the unit with the thermostat forced on Procedure Outdoor unit sensors Trouble Diagnosis Contents of Remote Controller Switch Alarm Display Possible cause of malfunction Operation Outdoor Unit Control Panel LED Display Blinking OFFDisplay meaning Example Unit No Item code sensor address Discharge temp. TD Check procedure Sensor Temperature Relationship Table Alarm code Alarm meaning 2WAY ECO-i Alarm Codes 2WAY ECO-i Alarm Codes S004 S005 E06 Alarm Alarm codeE12 Alarm Alarm code E15 Alarm Alarm code CN001 E16 Alarm Alarm codeE20 Alarm Alarm code E24 Alarm Alarm code E25 Alarm Alarm code E26 Alarm Alarm codeE29 Alarm Alarm code F04, F05 Alarm Alarm code F07, F24 Alarm Alarm code F06, F23 Alarm Alarm code F12 Alarm Alarm code F08 Alarm Alarm code F16 Alarm Alarm code F31 Alarm Alarm code F17 Alarm Alarm code H11, H12 Alarm Alarm code H15 Alarm Alarm code H03, H13 Alarm Alarm code Which may damage the compressor H06 Alarm Alarm code H07 Alarm Alarm code H31 Alarm Alarm code H08, H27 Alarm Alarm code L18 Alarm Alarm code L04 Alarm Alarm codeL10 Alarm Alarm code L17 Alarm Alarm code P03, P17 Alarm Alarm code P05 Alarm Alarm code P04 Alarm Alarm code P16 Alarm Alarm code P22 Alarm Alarm codeFan circuit on the outdoor unit control PCB Alarm code Blinking inspection display Blinking inspection display 1 Automatic backupP26 Alarm Alarm code P29 Alarm Alarm code Alarm meaning Compressor magnet SW seizing detected Blinking Inspection Display on the Remote Controller Inspection of Parts Output Operation Test Pin Thermister Characteristics Curve Room temp.sensorIndoor heat exch. coil sensor E1, E3 Compressor discharge gas temp. sensor Memo Service hvac.service@sna.sanyo.com 201002