AIR-CONDITIONER
Contents
Replacement
Explanation of indications
Explanation of illustrated marks
Confirmation of warning label on the main unit
Indication Explanation
∗ For details, refer to the parts list
Never recover the refrigerant into the outdoor unit
Catch the inner wires
Do not modify the products
Check the following items after reinstallation
Metal section Earth position
Limit even if the refrigerant leaks
After repair work has finished, check there is no trouble
Safety Caution Concerned to New Refrigerant
Pipe Materials
Copper pipe Piping
Flare nut
General tools Conventional tools can be used
Used tool Usage
Combination Pattern Indoor Unit / Outdoor Unit
RAV-SM2244AT series Simultaneous twin
Simultaneous triple
Simultaneous double twin
RAV-SM2244AT series Branch kit
RAV-SM2804AT series Branch kit
Way Cassette Type
Indoor Unit
Twin type
Duct Type Twin type
Ceiling Type Twin type
Way Cassette Type Triple type
Duct Type Triple type
Ceiling Type Triple type
High Wall Type Triple type
Way Cassette Type Double twin type
Compact 4-Way Cassette 600 × 600 Type Double twin type
RAV-SM562MUT-E
Slim Duct Type Double twin type
RAV-SM564SDT-E
Duct Type Double twin type
Ceiling Type Double twin type
High Wall Type Double twin type
Model Outdoor unit
2244AT8-E 2804AT8-E 2244AT7 2804AT7
RAV-SM2244AT8 Z ZG -E, RAV-SM2804AT8 Z ZG -E
Operation characteristic curve Digital Inverter
RAV-SM2244AT7 Z ZG, RAV-SM2804AT7 Z ZG
Capacity variation ratio according to temperature
Cooling Heating
Construction Views External Views
Joint pipe
RBC-DTWP101E Simultaneous Double Twin Branch pipe
Model ’ty
Gas side
Liquid side
RBC-TRP100E Simultaneous Triple
Gas side socket
RBC-TWP101E Simultaneous Twin Branch pipe
Gas side 25.4 15.9 Liquid side 12.7
Outdoor Unit Refrigeranting Cycle Diagram
RAV-SM2244 series
Systematic diagram of refrigerating cycle
RAV-SM2804 series
Wiring Diagram
Specifications of Electrical Parts
Parts name Type Specifications
Piping Materials and Joints Used
Safety During Installation/Servicing
Copper Pipes
Joints
Flare Processing Procedures and Precautions
Processing of Piping Materials
3 Dimensions related to flare processing for R410A / R22
Flare and flare nut dimensions for R410A
Flare and flare nut dimensions for R22
R410A R22 R410A, R22 Clutch type Wing nut type
Nm kgfm
Flare Connecting Procedures and Precautions
Wrenches available on the market
1 Configuration of refrigerant charging
Required Tools
Low temperature brazing filler
Flux Reason why flux is necessary
Materials for Brazing Silver brazing filler
Phosphor bronze brazing filler
Characteristics required for flux
Types of flux
Piping materials for brazing and used brazing filler/flux
Brazing
Basic Conditions Needed to Reuse the Existing Pipe
Restricted Items to Use the Existing Pipes
Branching Pipe for Simultaneous Operation System
Curing of Pipes
Final Installation Checks
Existing pipe SW Switch
Recovering Refrigerant
Handling of Existing Pipe
Outdoor Unit Control
Circuit Configuration and Control Specifications
Print Circuit Board, MCC-1596 Compressor Ipdu
Print Circuit Board, MCC-1597 Fan Motor Ipdu
CN700 Blue CN500 Red
CN504 Blue
F500
Print Circuit Board, MCC-1599 Interface CDB
Print Circuit Board, MCC-1600 Noise Filter
Outline of Main Controls
Discharge temperature release control
PMV Pulse Motor Valve control
Outdoor fan revolution number control
Cooling fan control
Heating fan control
Fan Taps Revolution number Allocation rpm
Short interrupted operation preventive control
Defrost control
Electrical current release control
Heat sink temperature detection control
High-pressure switch/Compressor case thermostat control
Electrical current release value shift control
Over-current protective control
Oil recovery control
12. SV2 valve control
Coil heating control
To ˚C
Troubleshooting
Summary of Troubleshooting
Before troubleshooting
Troubleshooting procedure
Wireless remote controller type
Trouble Confirmation of lamp display
Troubleshooting
Outline of judgment
Lamp indication
Cause of trouble occurrence
Lamp indication Check code Cause of trouble occurrence
Others Other than Check Code
Lamp indication Check code
Monitor Function of Remote Controller Switch
Check Code List Outdoor
Way valve inverse error
Representative defective position
Error mode detected by indoor unit
Cause of operation Status
Error mode detected by outdoor unit
Series
H03 Current detection circuit error Stop
Power supply error of remote controller, Indoor
Diagnostic Procedure for Each Check Code Outdoor Unit
LED display on outdoor P.C. board Dip switch setup
Latest error display
Error display, which occurs at present
Display Heat exchanger temp. sensor TL error →
Display Display 2 Heat exchanger temp. sensor TE error
F07 Display Display 2 Heat exchanger temp. sensor TL error
F12 Display Display 2 Suction temp. sensor TS error
F13 Display 1 Display 2 Heat sink temp. sensor TH error
F31 Display 1 Display 2 Eeprom error
H01 Display 1 Display 2 Compressor break down
H03 Display Display 2 Current detection circuit error
H04 Display 1 Display 2 Case thermostat operation
L10 Display
Display Display 2 Communication error between MCU
Display 1 Display 2 Unset model type → Refer to L10 column
Display High pressure SW system error
P04
Display Case thermostat operation → Refer to H04 column
Display Display 2 High pressure protective operation →
P19 Display Way valve inverse error
P07 Display Heat sink overheat error
P15 Display Gas leak detection
Cooling season
Position detection circuit error
Single operation check for outdoor fan
P26
Display 2 Short-circuit of compressor drive element
Temperature sensor
TA, TC, TCJ, TE, TS, to sensors
TD, TL sensors
Representative value
Calling of Error History
Setup AT Local Site and Others
Group Control Operation
Indoor unit power-ON sequence
By feed unit Automatic address judgment
Initial communication
Usual regular communication
Function Set position Control contents
Defrost control
Operation part
Specifications Operation contents
Display part
Others Selection of LED display SW800, SW803 operation
Switch Function / Contents Refer
Display selection list
Error display
¥¥ll¡
Setup
Display
Pressure
Kg/cm²G
SW804 Operation when pushdown button switch SW801 is pushed
Specific operation for maintenance check SW801, SW804
Specific operation
For check RY703, CN703 check
Address Setup
Address Setup Procedure
System Configuration
Address Setup & Group Control
Terminology
Only turning on source power supply Automatic completion
Automatic Address Example from Unset Address No miswiring
Example
Standard One outdoor unit Single Twin Triple
Remote Controller Wiring
Wiring diagram
Simultaneous twin system
Simultaneous triple and double twin system
Address Setup Manual setting from remote controller
Confirmation of Indoor Unit No. Position
To know the position of indoor unit body by address
Button
Button if the unit stops
Maintenance/Check list
Part name Object Contents of check Contents of maintenance
Contents
Connect the connecting wire correctly
New Refrigerant Air Conditioner Installation
Tools/equipment Use How to use tools/equipment
When using the conventional piping
When using general copper pipes
Flare nuts and flare machining
100
101
Parts name ’ty
102
Allowable pipe length m
Total length Branch piping Indoor-outdoor H
Upper Maximum SM2244 SM2804
Pipe diameter mm
104
Using the specified wires, ensure that the wires are
Connected, and fix wires securely so that the external
Tension to the wires does not affect the connecting
Be sure to connect the earth wire grounding work
106 8 Earthing
Check the following before starting a test run
That all pipes are connected securely without leaks
That the valve is open
SW802
107
Reference outside Wall thickness Material Diameter mm
Placement location Term Curing manner
Cause Display mode
108
Existing pipe SW
Flare nut width H
Replacement of the Service P.C. Board 4316V392 MCC-1599
Setting the jumper wires and DIP switches
Model switching J800 to J803
110
HOW to Exchange Compressor
Exchanging Procedure of Compressor Outline
Exchange of Compressor
111
Detachments
112
RAV-SM224, RAV-SM280 series
Detachment
No. Part name Procedure
113
114
115
Part name Procedure Remarks
116
117
Temporary Suspended State Inverter Assembly front
118
119
Temporary suspended state Inverter Assembly Ipdu
Compressor 1. Detachment
120
Fan motor 1. Detachment
121
Compressor terminal
122
123
Fan guard 1. Detachment
Exploded Views and Parts List
25, 26 22, 23 47, 55 33, 34 124
125
Location Model name Description RAV-SM2244 RAV-SM2804
704
Inverter Assembly
126
127
25, 26 22, 23 47, 55 33, 34
128
129
AT7 AT7Z AT7ZG
712
130
131
Location Model name
2244AT7ZG
2804AT7ZG
Check of Concentration Limit
Toshiba Carrier Corporation