Main
SERVICE MANUAL
CONTENTS
WARNING
SAFETY CAUTION
WARNING
CAUTION
New Refrigerant (R410A)
1. Safety Caution Concerned to New Refrigerant
2. Cautions on Installation/Service
3. Pipe Materials
<Piping>
4. Tools
Tools exclusive for R410A (The following tools for R410A are required.)
Q R S T U V W X Y Y
General tools (Conventional tools can be used.)
5. Recharge of Refrigerant
4mm-hexagonal wrench is required.
Q R
Q R
[ Cylinder with siphon ] [ Cylinder without siphon ]
1. CONSTRUCTION VIEWS (EXTERNAL VIEWS)
Space required for installation and servicing
Drain-up standing-up size Note)
Wired remote controller (RBC-AMT31E)
2. WIRING DIAGRAM
DP
PMV
~
Control P.C. board for Indoor unit MCC-1402
3. PARTS RA TING
3-1. Parts Rating
3-2. Name of Each Part
Air outlet/Air outlet flap
Air filter
2 15
5
78 9 3
1 4 6
10 11 13
Operation section
Air volume select button
Timer set button
Check button
Fan button
1 3 2
4
3-5. Automatic Operation (Super Heat Recovery Type Only)
Start
button
Mode select button (MODE)
Temperature button
3-6. TIMER Operation
Timer operation
Push
Push TIMER SET button.
to select SET TIME.
1, 2, 3 4
Every pushing the button, the air direction changes.
In Heating operation
In Cooling / Dry operation
How to start swinging
3-8. Information
Confirmation before operation
Heating capacity
Defrost during heating operation
3-minutes protection
3-9. Air Conditioner Operations and Performance
3-10. When the Following Symptoms are Found
Check the points described below before asking repair servicing. Symptom
Cause
It is not a failure. Check again.
Accessory parts and Parts to be procured locally
PRECAUTIONS FOR SAFETY
CAUTION
WARNING
SELECTION OF INSTALLATION PLACE
WARNING
CAUTION
PRECAUTIONS FOR SAFETY
Installation space
INSTALLATION OF INDOOR UNIT
WARNING
OK NO GOOD
SELECTION OF INSTALLATION PLACE
Dimensional view
INSTALLATION OF INDOOR UNIT
Existing ceiling void
New ceiling void
Treatment of ceiling
Installation of hanging bolt
DRAIN PIPING WORK
OK
Pipe material/Insulator and size
NO GOOD
Connection of flexible hose
REFRIGERANT PIPING
WARNING
If refrigerant gas leaks during the installation work, ventilate the room immediately.
After the installation work, confirm that refrigerant does not leak.
Permissible pipe length and permissible height difference
ELECTRIC WORK
WARNING
2. Ensure connection of earth wire. (Grounding work)
CAUTION
Ensure an earth leakage breaker is installed.
ELECTRIC WORK
Cable connection
Remote controller wiring
Wiring diagram
Wiring between indoor and outdoor units NOTE
APPLICABLE CONTROLS
NOTIFICATION
Automatic address
Applicable control setup
Basic operation procedure for setup change
APPLICABLE CONTROLS
In case of remote controller-less (Group control)
Change of lighting time of filter sign
Increased heating effect
Group control
1, 5
2, 4
3
In case of wired remote controller
How to execute test operation
TROUBLESHOOTING
Confirmation and check
button. This will return the display back to its original mode.
Confirmation of error history
Check code Indoor unit No. in which an error occurred
Page
New check code
1. Difference between the new check code and the current system
Display on wired remote controller
Display on sensor part of wireless remote controller
MAINTENANCE
Prior to maintenance, ensure the power supply is turned off.
CAUTION
Do not handle the buttons with wet hands as this will cause the risk of electric shock.
Daily maintenance
4. REFRIGERATING CYCLE DIAGRAM
5. CONTROL OUTLINE
5-1. Control Specifications
Page
Page
Page
6. APPLIED CONTROL
<Procedure> Execute the setup operation while the unit stops.
Page
TYPE
Item code [10]
Indoor unit capacity
Item code [11]
6-2. Applied Control in Indoor Unit
nRemote location ON/OFF control box (TCB-IFCB-4E)
[Wiring and setup]
(1) Control items
(2) Wiring diagram using remote control interface (TCB-IFCB-4E)
nLeaving-ON prevention control
[Function]
Push
+
Push concurrently
7. TROUBLESHOOTING
7-1. Troubleshooting Summary
Trouble Check the check display
1. Before troubleshooting
Q
7-2. Check Method
llIPDU communication error I/F
Check code list
Page
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The check code
1. The TCC LINK check code
|
< Display in wired remote controller >
<Display on sensor part in wireless remote controller>
7-3. Troubleshooting by Check Display on Remote Controller
In case of wired remote controller (RBC-AMT31E)
1. Confirmation and check
2. Confirmation of error history
In case of central remote controller (TCB-SC642TLE)
1. Confirmation and check
Unit No display Alarm display
2. Confirmation of error history
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(*1) All stop only in case of the header unit The follower unit continues operation.
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MG-SW : Magnet Switch, OCR : Over-current Relay
Page
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Error detected by TCC-LINK central control device
Cautions when servicing for compressor
How to check inverter output
How to check resistance of compressor winding
How to check the outdoor fan motor
7-5. Diagnosis Procedure for Each Check Code
[E03]
[E04]
[E01]
Correct the communication cabling.
[E06]
[E07]
Decreased number of indoor units
(NOTE)
Indoor/Outdoor communication circuit error (Detected at outdoor side)
[E08]
Automatic address start error
[E15]
[E12]
Duplicated indoor addresses
[E16]
[E18]
Header outdoor units quantity error
[E19]
indoor header and follower
[E20]
[E25]
Terminal outdoor unit error
[E28]
Unit connected to other line during automatic address
[E31]
Indoor TCJ sensor error
Indoor TC2 sensor error
[F02]
Indoor TC1 sensor error
Page
[F15]
Ps sensor error
Indoor other error
[F29]
Pd sensor error
SC R
Current detective circuit system error
[H04] [H14]
Low-pressure protective operation
[H06]
Compressor 1 case thermo operation Compressor 2 case thermo operation
[H07]
( )
( )
(*1) a) Leakage check for SV3A valve (For multiple outdoor unit system)
b) Leakage check for SV3C valve
c) Clogging check for SV3B valve (For multiple outdoor unit system)
( )
Oil level detective circuit system error (Auxiliary code : 02)
After power reset
( )
TK3 temperature detective circuit error (Auxiliary code : 03)
( )
TK4 temperature detective circuit error (Auxiliary code : 04)
Duplicated setup of outdoor line address
( )
(Refer to Address setup.)
YES
Duplicated indoor header units
[L03]
[L07]
Outdoor capacity unset
[L17]
Indoor capacity unset
[L09]
[L20]
IPDU quantity error
[L29]
Flow selector unit system error
[L28]
[L30]
Does outside device correctly operate? Check cause of the operation.
Extended IC error
[L31]
Indoor fan motor error
( )
AC All heating operation
( )
[P12]
Heat sink overheat error
Indoor overflow error
[P10]
[P07]
( )
[P15]
Outdoor liquid back detection error
Gas leak detection TS condition (Auxiliary code : 01)
[P15]
( )
Gas leak detection TD condition (Auxiliary code : 02)
( )
( )
[P19]
High-pressure protective operation
[P20]
4-way valve operation error
C
( ) ( )
[P26]
[P29]
[P31]
G-Tr short-circuit protection error
Compressor position detective circuit error
7-6. 7-Segment Display Function
1. Data display of system information (Displayed on the header outdoor unit only)
2. Data display of outdoor unit information (Displayed on each outdoor unit)
3. Data display of outdoor cycle (Displayed on each outdoor unit)
4. Data display of indoor unit information (Displayed on the header unit only)
NOTE) Indoor address No. is chosen by changing SW02 and SW03.
5. Outdoor EEPROM write-in error code display (Displayed on the header unit only)
nTemperature sensor characteristics
7-7. Sensor Characteristics
Indoor Unit
n7-segment display A, B
Display A D600 D601 D602 D603 D604
Display B
8. CONFIGURATION OF CONTR OL CIRCUIT
8-1-1. Indoor Controller Block Diagram
8-1. Indoor Unit
1. Connection of wired remote controller
Wired remote controller (Up to 2 units) Weekly timer
2. Connection of wireless remote controller kit
Indoor unit #1
3. Connection of both remote controller and wireless remote controller kit
Indoor unit #1
Wired remote controller Weekly timer
8-1-2. Indoor Print Circuit Board
MCC-1402
8-1-3. Optional Connector Specifications of Indoor P.C. Board
9. DETACHMENTS
9-1. Indoor Unit
MMU-AP0071MH, AP0091MH, AP0121MH, AP0151MH, AP0181MH Ceiling panel: RBC-UM11PG-E
Preparing work:
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Procedure Remarks
Page
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Page
A
B
Page
10. P.C. BOARD EXCHANGE PR OCEDURES
10-1. Exchange of P.C. Board for Indoor Service
Requirement at exchange of P.C. board assembly for indoor service
<Exchange procedure>
Method 1
Method 2
Before exchange, it is impossible to read out the setup contents due to EEPROM error.
Procedure 1 : Readout setup contents from EEPROM
Item code necessary at minimum
<Remote controller operation diagram>
(Case 1) (Case 2)
Procedure 3 : Writing-in of setup contents to EEPROM
<EEPROM layout>
<Make a note of the setup contents. (Item code list (Example))>
Type Item code [10]
The initial setup value of EEPROM installed on the service P.C . board
( )
Indoor unit capacity Item code [11]
~
11. EXPLODED VIEWS AND PARTS LIST
11-1. Ceiling Panel
RBC-UM11PG(W)E
11-2. Compact 4-way Air Discharge Cassette Type
MMU-AP0071MH, AP0091MH, AP0121MH, AP0151MH, AP0181MH