Indoor Units
Outdoor Units
Please Read Before Starting
Check of Density Limit
Contents
Trouble Diagnosis
Control Functions
Introduction
Required settings for Test Run
Outdoor unit No.1
Selecting an Outdoor Unit for Operation
Delayed Start of Outdoor Units
Outdoor Unit Operating Rules
Outdoor Unit Stop Rules
Compressor Selection Rules
Compressor Control
Capacity
Type
Inverter Compressor Capacity Control
Compressor Capacity Control
Forced Compressor Stop
Roadmap Control
Compressor Control
Protection control
Roadmap Control after Trip
System Refrigerant Oil Recovery Control
Way Valve Adjustment Control
System refrigerant oil recovery cycle
Start of System Refrigerant Oil Recovery Control
Defrost Control
Refrigerant Oil Recovery Control between Systems
Defrost Methods
Constraint conditions
Frost detection
Outdoor units where defrost occurs
Reverse Cycle Defrost
OFF
Outdoor unit cycle defrost
System defrost end
Defrost end judgment conditions
Oil Control
Other Controls
Refrigerant Control Valve RCV
Operation of Solenoid Valves
Refrigerant Balance Valve RBV Gas Purge Valve
Bypass Valve BPV
Recovery Valve Orvr
Types of Electronic Thermostatic Expansion Valves
Power Initialization
CHDX07263, CHDX09663
SC Circuit Electronic Control Valve MOV4
Outdoor Fan Control
Demand Control
Demand setting Control Demand meaning
Normal Control
Indoor Unit Control of the Electronic Control Valve
Cooling operation
Heating operation
Special Control
Gas tube valve Electronic thermostatic Expansion valve
Rap Valve Kit Control
Indoor Unit Refrigerant Oil Self Recovery Control
Discharge temperature protection list
Discharge Temperature
Discharge sensor failure list
Compressor No
Current Protection
Pressure Sensor Failure
Automatic Backup Operation
Backup Operation
Manual Backup
S010 Compressor 1 backup
S010 switch
Compressor 2 backup
This setting controls the operation of the drain pump
Service Maintenance Functions
Setting Max. fan mode Effect Amount of capacity reduction
Setting Description
Setting No Compatible static pressure psi
Setting Operation
Set at outdoor units that include CCU functions
Speed
Snowfall Sensor Functions Outdoor Eeprom
Other Functions
Symptoms of insufficient gas
Outdoor unit PCB LED indications in judgment mode
Symptoms 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
Discharging Oil from Oil Separator
Discharging Compressor Oil
Discharging Oil in Compressor
Checking the Oil
Backup operation by disconnecting the outdoor unit
Automatic Backup
Switch on outdoor unit control PCB Action
If the failed outdoor unit is not the No unit
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
Refrigerant Recovery Procedures from outdoor unit
Recovering Refrigerant
Carry out refrigerant recovery
Following equipment and tools are required
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
Replacing compressors
Removing and Installing Compressors
Removal
Installation
Front view Type
Compressor
Compressor
Replacing multiple compressors Removal
High and Low Pressure Sensors
Installing the High and Low Pressure Sensors
Removing 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
Service Checker Section
NN About the outdoor unit maintenance remote controller
System diagram
Overview
NN Outdoor unit alarm history monitor
NN Temperature monitor
NN Mode settings
Functions
NN Functions on the ordinary display
Cooling/heating change Fig
All units start/stop Fig
All units test run Fig
Double-speed
Item code Remarks
NN Display functions
Sample displays
Locations where , , and are displayed as shown in Fig
Meaning of display colon
Display of unit Nos −
Is not displayed
Monitoring Operations
Indoor unit
NN Display of unit No main unit
Operating procedure
Outdoor Unit Alarm History Monitor
Setting mode 1 Operating procedure
Mode Settings
Display of first 4 digits Display of last 4 digits
B are displayed alternately
List of Item Codes
Setting mode 2 Operating procedure
Memo
Remote Controller Functions
Procedure
Simple Settings Function
Remote 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
Enabled only in 2WAY Multi heat-pump models
Explanation of operation mode priority change
Function
Cooling or dry Heating Fan Fan not changed
Detailed Settings Function
Setting range Drying
From previous
List of Servicing Functions
Remote Controller Servicing Functions
Test Run Function
Procedure
Operates 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
Blinking OFF
Outdoor Unit Control Panel LED Display
Display 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
E12 Alarm Alarm code
E06 Alarm Alarm code
E15 Alarm Alarm code
S004 S005
E20 Alarm Alarm code
E16 Alarm Alarm code
E24 Alarm Alarm code
CN001
E26 Alarm Alarm code
E25 Alarm Alarm code
E29 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
L10 Alarm Alarm code
L04 Alarm Alarm code
L17 Alarm Alarm code
L18 Alarm Alarm code
P03, P17 Alarm Alarm code
P05 Alarm Alarm code
P04 Alarm Alarm code
P22 Alarm Alarm code
P16 Alarm Alarm code
Fan circuit on the outdoor unit control PCB
P26 Alarm Alarm code
Blinking inspection display 1 Automatic backup
P29 Alarm Alarm code
Alarm code Blinking inspection display
Alarm meaning Compressor magnet SW seizing detected
Blinking Inspection Display on the Remote Controller
Inspection of Parts
Output Operation
Test Pin
Room temp.sensor
Thermister Characteristics Curve
Indoor heat exch. coil sensor E1, E3
Compressor discharge gas temp. sensor
Memo
Service hvac.service@sna.sanyo.com 201002