Toshiba R410A Quick Reference Download Page 69

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Check Procedure to Search Cause of Compressor Oil Shortage

Are there

any miswiring or incorrect

connection of TK1, TK2, TK3, TK4 and

TK5 sensor in the unit that has

replaced compressor?

Are the balance pipes of

all outdoor units connected to the

same refrigerant line fully open?

Are the

characteristics of the TK1,

TK2, TK3, TK4 or TK5 sensors of the

unit that has replaced compressor

correct?

(To next page)

Yes

With the compressor(s) disconnected,
check the oil circuit in accordance
with the procedure described below.

Open the balance pipe valves fully.

Correct the miswiring or connection.
TK1: CN531 TK2: CN532
TK3: CN533 TK4: CN534
TK5: CN535

Replace the faulty sensor..

Summary of Contents for R410A

Page 1: ...Quick reference SHRM File No A13 004 SUPER HEAT RECOVERY MULTI UL Model R410A ...

Page 2: ...length L 640 ft 195 m The longest piping length from the first branch Li 215 ft 65 m Max equivalent piping length in group of the FS unit Ln 98 ft 30 m Y joint FS unit Indoor unit Height difference between indoor units H2 130 ft 40 m Height difference between indoor units in same FS unit H4 1 6 ft 0 5 m Allowable length of refrigerant pipes and allowable height difference between units Refrigerant...

Page 3: ...h between branching sections L2 L3 L4 L5 L6 L7 Item Allowable value ft m Pipes Cautions for installation The header unit is connected to main piping to indoor units The header unit is the one with the highest capacity code A header unit B To connect gas pipes to indoor units use Y shaped branching joints to keep pipes level When Outdoor unit connection piping kits is used to pipe to outdoor units ...

Page 4: ... difference between indoor units Table 2 49ft 15m or less Over 49ft 15m 49ft 15m or less Over 49ft 15m For combination of the outdoor units refer to Combination of outdoor units Refrigerant Piping Continued Selection of pipe size Capacity code of indoor and outdoor units Selection of pipe material For the indoor unit the capacity code is decided at each capacity type Table 1 The capacity codes of ...

Page 5: ... Indoor unit Indoor unit connecting pipe Indoor unit capacity type Gas side Ø3 8 Ø1 2 Ø1 2 Ø5 8 Ø5 8 Liquid side Ø1 4 Ø3 8 Ø1 4 Ø3 8 Ø3 8 6 007 to 012 type Pipe length Actual length 015 to 018 type 021 to 048 type Pipe length Actual length 49 ft or less Over 49 ft 49 ft or less Over 49 ft Branching section Branching header 3 4 5 Total capacity codes of indoor units kBtu h Model name 8 For 2 pipes ...

Page 6: ... supply Attached wire Control wiring 1 1 3 1 3 1 W iring Diagram 3 3 1 1 2 2 4 4 5 5 7 5 3 5 3 7 9 9 4 3 2 1 5 2 1 3 4 5 3 1 3 1 SVSS SVD WHI COM SVS SVS SVS SVSS SVDD SVDD SVD ORN BLU YEL BRW SVD SVS Power supply single phase 208 230 V 60 Hz Indoor unit ground screw Outdoor unit side Indoor unit side Indoor unit Control P C Board for indoor unit Control P C Board MCC 1431 CN01 RED CN02 GRN CN10 W...

Page 7: ...s Lx Actual total length of liquid pipe Ø1 4 ft Ly Actual total length of liquid pipe Ø3 8 ft Lz Actual total length of liquid pipe Ø1 2 ft Selection of installation place The cooling performance may decline considerably when total operating capacity of cooling indoor units is less than 38 kBtu h while ambient temperature is below 32 F 0 C L2 L3 a2 b2 c2 d2 L1 d1 a1 b2 c1 FS unit Additional refrig...

Page 8: ... TK 5 Oil header SV 3A Solenoid valve Capillary tube Check valve Check joint Tempe sensor Distributor Strainer Balance pipe service valve Suction gas side service valve Dischage gas side service valve Liquid side service valve Check joint Liquid pipe SV 3B TK 2 SV 41 TD 1 SV 3C TK 4 Comp 1 Comp 2 High pressure SW High pressure SW SV 42 TD 2 Inverter Inverter TS 2 TS 1 Low pressure sensor Check joi...

Page 9: ... Oil separator Liquid tank Fusible plug SV 14 TK 1 TK 2 TK 3 SV 3E TK 5 Oil header SV 3A Solenoid valve Capillary tube Check valve Check joint Tempe sensor Distributor Strainer Balance pipe service valve Suction gas side service valve Dischage gas side service valve Liquid side service valve Liquid pipe SV 3B SV 3F SV 41 TD 1 SV 3C TK 4 Comp 1 Comp 2 High pressure SW High pressure SW High pressure...

Page 10: ...36 Yellow 1 To block the liquid line SV2 Connector CN311 White Hot gas bypass 1 Low pressure release function 2 High pressure release function 3 Gas balance function during stop time High pressure sensor Connector CN501 Red 1 Detects high pressure and controls compressor capacity 2 Detects high pressure at single operation collective cooling operation and controls the fan in low ambient cooling op...

Page 11: ...y Capillary Capillary Capillary Suction gas pipe Suction gas pipe Liquid pipe Discharge gas pipe Suction gas pipe To indoor liquid side To indoor liquid side To indoor gas side To indoor gas side To indoor liquid side To indoor gas side Main heat exchanger Functional parts name Solenoid valve SVD SVS SVDD SVSS Function outline Discharge gas block valve 1 High pressure gas circuit at heating operat...

Page 12: ...continuation ON as it is Operation continuation ON as it is Momentary stop ON Æ OFF Collective heating ON Operation continuation ON as it is Operation continuation ON as it is Momentary stop ON Æ OFF Single heating ON Control valve output outline of cooling heating exchange unit Operation standard SVD High pressure circuit valve SVDD Pressure valve For delay SVS Low pressure circuit valve SVSS Reg...

Page 13: ...S1 TS2 has been open short circuited F15 Wiring error in outdoor temperature sensors TE1 TL has been detected F31 Outdoor EEPROM is faulty alarm and shutdown for header unit and continued operation for follower unit H05 Wiring installation error or detachment of outdoor discharge temperature sensor TD1 has been detected F16 Wiring error in outdoor pressure sensors Pd Ps has been detected F22 Outdo...

Page 14: ...er Error detected by central control device Note The same error e g a communication error may result in the display of different check codes depending on the device that detects it Moreover check codes detected by the main remote controller central control device do not necessarily have a direct impact on air conditioner operation Check code Description of error Check code Description of error E03...

Page 15: ...4 D600 D601 D602 D603 D604 SW15 SW05 Push switches Rotary switches 7 segment display A 7 segment display B Check on the indoor unit 1 Display check on the remote controller in the case of a wired remote controller Check that a frame as shown in the following figure at left is displayed on the LC display section of the remote controller SET TIME TIMER SET TEST FILTER RESET TEMP CL FAN SAVE SWING FI...

Page 16: ...cedure and then set up the address according to the operation procedure Be careful to note that the setup operation may differ in group control and central control systems Note The address cannot be set up if switches are not operated Item Operation and check contents 5 Display check after setup After address setup U1 is displayed on the 7 segment display For follower outdoor units U2 to U3 are di...

Page 17: ... 1 flash 3 Push SW 15 to start the automatic address setting It may take up to 10 minutes normally about 5 minutes to complete one line s setting 4 The 7 segment display indicates Auto 1 Auto 2 Auto 3 After the indication U 1 U 1 flash starts flashing on the display When the flashing stops and U 1 U 1 light emain lit on the display the setting is complete Interface P C board on the header outdoor ...

Page 18: ... system refrigerant line or DI SDI series Interface P C board on the header outdoor unit SW06 SW07 SW09 SW10 SW11 SW12 SW13 SW14 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Line address switches on the outdoor interface PC board O switch on switch off SW13 SW14 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 O O O O O O O O O O O O O O O O O O O O O O O O O 2 3 4 1 2 3 4 SW13 SW14 1 15 16 1...

Page 19: ...e 7 segment display on the interface P C board of the header outdoor unit indicates U 1 L08 U 1 flash 5 Push SW 15 to start the automatic address setting It may take up to 10 minutes normally about 5 minutes to complete one line s setting 6 The 7 segment display indicates Auto 1 Auto 2 Auto 3 After the indication U 1 U 1 flash starts flashing on the display When the flashing stops and U 1 U 1 ligh...

Page 20: ...t with the smallest line address number 8 1 2 SW30 SW30 Header unit with the least number of the line address 4 6 5 Address Setup Continued U1 U2 U3 U4 U5 U6 9 TO INDOOR UNIT TO CENTRAL CONTROL LER TO OUTDOOR UNIT 8 After completing address setting of all systems turn off dip switch 2 of SW30 on the interface P C boards of all the header outdoor units connected to the same central control except t...

Page 21: ... 1 2 2 3 Indoor unit address 1 2 1 2 1 Group address 0 0 1 2 0 A U1 U2 U3 U4 U3 U4 U3 U4 U3 U4 U3 U4 U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U1 U2 U1 U2 U1 U2 U1 U2 U1 U2 U5 U6 B A B A B A B A B Central remote controller Relay connector Relay connector Relay connector Header unit Header unit Header unit Follower unit Follower unit Remote controller Remote controller Remote controller Remot...

Page 22: ... the display goes on Central control address 13 Using the TEMP buttons set DN code to 03 03 03 03 03 14 Using the TIME buttons set up the central control address 0001 0001 0001 0001 0001 0064 0064 0064 0064 0064 15 Push SET button OK when display goes on 16 Push the TEST button Setup is finished Setting up blinks when Setting up goes off operation is possible 17 Return to the original wiring over ...

Page 23: ...erant line After that set up the central control address For central control address setup refer to the installation manual of the central control devices Confirming the indoor unit addresses and the position of an indoor unit using the remote controller Confirming the numbers and positions of indoor units To see the indoor unit address of an indoor unit which you know the position of When the uni...

Page 24: ... one after another The first indicated unit number is the address of the header unit Only the fan and louvers of the indicated indoor unit are activated 3 Push the TEST button to finish the procedure All the indoor units in the group stop To check all the indoor unit addresses using an arbitrary wired remote controller When communication wirings of 2 or more refrigerant lines are interconnected fo...

Page 25: ...r unit the indoor unit is paired with a wired remote controller one to one or an indoor unit in a group The method is available when the addresses have already been set automatically 3 5 8 1 4 2 6 7 ON OFF TEMP TIME SET CL FILTER RESET TEST TIMER SET CODENo UNIT No SETTING DATA SET R C No Finish Execute it while the units are stopped 1 Push and hold the SET CL and TEST buttons at the same time for...

Page 26: ...ons repeatedly to select a system address 3 Push the SET button The address of one of the indoor units connected to the selected refrigerant line is indicated on the LCD display and the fan and louvers of the unit are activated At first the current indoor unit address is displayed in SET DATA No system address is indicated 4 Push the TIME buttons repeatedly to change the value of the indoor unit a...

Page 27: ...hin 49 ft 15 m Incorrect Control wiring between indoor unit and FS unit Within 49 ft 15 m Piping Piping Piping FS unit FS unit FS unit Control wiring between indoor unit and FS unit Remote controller Remote controller Indoor unit Indoor unit Group control Group control FS unit Piping Control wiring between indoor unit and FS unit Remote controller Indoor unit Incorrect 5 4 2 3 1 Incorrect example ...

Page 28: ...r a while The display changes according to the indoor unit model 2 In a group control the firstly displayed indoor unit No becomes the header unit Every pushing UNIT LOUVER button left side of the button the indoor unit No in the group control is displayed successively Select an indoor unit of which setting is to be changed In this time the position of the indoor unit of which setup is to be chang...

Page 29: ...lay on the header outdoor unit indicates U 1 and operate the interface P C board on the header outdoor unit of the refrigerant line as follows SW01 SW02 SW03 SW04 Clearable addresses 2 1 2 Confirm that the 7 segment display indicates A d buS and turn SW04 ON for more than five seconds System indoor unit group address 2 2 2 Confirm that the 7 segment display indicates A d nEt and turn SW04 ON for m...

Page 30: ... SW30 bit 2 on the interface PC board at outdoor header unit side Turn off the power and then execute the operation 29 U3 U4 U1 U2 U5 U6 U1 U2 A B U3 U4 U1 U2 U5 U6 U1 U2 A B U3 U4 U1 U2 U5 U6 U1 U2 A B U3 U4 U1 U2 U5 U6 U1 U2 A B U3 U4 U1 U2 U1 U3 U2 U4 U5 U6 U1 U2 A B Central remote controller Header unit Follower unit Follower unit Remote controller Remote controller Remote controller Remote co...

Page 31: ... Relay connector 1 Is the relay connector of the header unit connected after address setup 2 Is the relay connector of the follower unit removed Terminal resistance 3 Is the end resistance SW30 bit 2 of the header unit with the smallest line address number in the central control turned on Setup is unnecessary for follower units 4 Is the terminal resistance SW30 bit 2 of the header units except for...

Page 32: ...ror is detected as usual Push the button 4 When the test operation has finished push the button to stop the operation The same display as in procedure 1 appears in the display section Operation content Procedure 1 2 Remove the nameplate of the receiver section by inserting a screwdriver or similar tool into the notch at the bottom of the plate and set the DIP switch to TEST RUN ON 4 3 Use either t...

Page 33: ...air conditioner fs power This operation is not accepted for 5 minutes when power has been turned on for the first time after installation and for 1 minute when power has been turned on the second and subsequent times after that After the specified time has passed perform the test operation 6 3 Test cooling operation Test heating operation Set the temperature to 64 4 F 18 C using the Temperature se...

Page 34: ...or Execute a test operation using Start Stop Function of the Indoor Unit from Outdoor Unit in the Service Support Function section Check power voltage of the main power supply Check the cable size of the power supply Check the temperature load of the indoor outdoor units Check the pipe length and refrigerant amount Check the operating Hz of the compressor Check the operation of the outdoor fans Ch...

Page 35: ...pressor 3 Indoor Outdoor 0724FT9UL 0724FT6UL All cooling All heating All cooling All heating All cooling All heating 410 428 415 430 421 435 130 102 130 102 130 100 183 184 184 186 186 184 82 39 83 37 84 37 59 40 60 38 60 39 48 100 48 100 50 101 105 38 105 36 105 36 102 90 102 91 102 91 50 50 45 50 50 57 50 50 45 50 50 57 45 50 50 57 High High High High High High 80 67 70 80 67 70 80 67 70 95 47 4...

Page 36: ...can be performed Check and correct disconnection of the indoor outdoor communication line the communication line between the header unit and the leading indoor unit Check for the influence of communication noise E16 E16 XX Alternate blinking Exceeded the number or capacity of connected indoor units Adjust the number or capacity of connected indoor units E23 E23 Communication between outdoor units ...

Page 37: ...ess setup is performed under the condition of connecting multiple refrigerant lines Correct wiring ON 1 2 SW30 Indoorremote controller status Headerunit 7 segment display Cause Countermeasures No response None The communication line is not connected between indoor and outdoor the unit that does not respond to the indoor remote controller Modify the wiring Line address and indoor address are not se...

Page 38: ...dresses again and check the number of connected indoor units The number of outdoor units connected to a group is too few in group operation from an indoor remote controller The indoor remote controller is not connected with wire Miswiring of the indoor remote controller Using the main indoor remote controller connected to a group start a test operation specify the unit that is not operating the un...

Page 39: ... CODE No to FF FF FF FF FF 3 The display in Section A in the following figure is counted with interval of 5 seconds as 0005 0005 0005 0005 0005 0004 0004 0004 0004 0004 0003 0003 0003 0003 0003 0002 0002 0002 0002 0002 0001 0001 0001 0001 0001 0000 0000 0000 0000 0000 When the count arrives 0000 the error is cleared However counting from 0005 is repeated on the display 4 When TEST button is pushed...

Page 40: ...ror is completely cleared Interface P C board SW04 SW05 SW02 SW03 SW01 7 segment display A 7 segment display B Rotary switches 3 Clearing error by resetting power This function is provided to clear error in a system by resetting the power of all the outdoor and the indoor units As same as the clearing method by the interface P C board errors of both the outdoor and the indoor units are once cleare...

Page 41: ...turn on the power of the indoor unit prior to the power of the outdoor unit Set the display select switches on the interface P C board of the header unit as follows Set SW01 SW02 SW03 to 2 4 1 Push the push switch SW04 on the same board for 2 seconds or more Checking display of the connected remote controller flashes Push the push switch SW05 on the interface P C board of the header unit for 2 sec...

Page 42: ... to the normal opening Pulse Motor Valve PMV Forced Open Fully Close fully Function in Outdoor Unit This function is provided to forcedly open or close fully P M V PMV1 PMV2 PMV4 used in the outdoor unit for 2 minutes PMV1 PMV2 Open fully On the interface P C board of the outdoor unit set the dip switch SW12 bit1 to OFF SW12 bit2 to OFF and shortcircuit CN30 PMV1 PMV2 Close fully On the interface ...

Page 43: ...and the solenoid valve output is exchanged when SW02 has been kept with the same number for 5 seconds or more NOTE 2 The mark O in the table indicates that the corresponding solenoid valve is forcedly turned on NOTE 3 The mark in the table indicates that ON OFF of the solenoid valve is controlled based upon the specifi cations of the air conditioner NOTE 4 The mark in the table indicates that the ...

Page 44: ...hat by changing the setup number of the switches SW02 and SW03 7 segment display B and the fan mode are changed Mode output pattern of the fan is as follows 43 SW02 SW03 7 segment display B Fan mode 1 4 63 63 2 62 62 3 61 61 4 60 60 5 59 59 6 58 58 7 57 57 8 56 56 9 55 55 10 54 54 11 53 53 12 52 52 13 51 51 14 50 50 15 49 49 16 48 48 1 5 47 47 2 46 46 3 45 45 4 44 44 5 43 43 6 42 42 7 41 41 8 40 4...

Page 45: ...or code display 2 Push the push switch SW04 for 2 seconds or more 3 E 1 is displayed on 7 segment display A 4 The fan of the outdoor unit in which error occurred starts operation within approx 10 seconds after E 1 was displayed In case to operate the fans in all the normal outdoor units 1 Check that the switches SW01 SW02 SW03 on the interface P C board in the header unit are set to 1 1 1 2 Push t...

Page 46: ...manually to position near the current outside temperature Operation 1 Set the rotary switches on the interface P C board to numbers as follows SW01 SW02 SW03 to 2 1 15 7 segment display t o 2 Keep pushing the push switch SW04 on the interface P C board for 1 second or more The mode changes to the TO sensor value fix manual mode 3 As shown in the following table TO sensor value can be fixed by sett...

Page 47: ...id valve forced open close function 1 16 4 7 2 F d Fan forced operation function 15 2 t o Outside temperature sensor manual adjustment function 6 H Heating test operation function 7 C H Indoor collective start stop ON OFF function 11 r d Outdoor refrigerant recovery operation function Pump down function 16 E r Error clear function SW01 SW02 SW03 7 segment display A B Function contents 1 1 1 U 1 E2...

Page 48: ...n and louver of the selected indoor unit move 2 Each time the UNIT LOUVER button Left side of the button is pushed one of the indoor unit Nos under group control is displayed in turn Then the fan and louver of the selected indoor unit move 3 Use the TEMP button to select the CODE No DN code of the desired function 4 Use the TIME button to select the desired SET DATA associated with the selected fu...

Page 49: ...0001 Swing only According to type 0d Existence of AUTO mode 0000 Provided 0001 Not provided Automatic selection from connected outdoor unit 0001 Not provided 0F Cooling only 0000 Heat pump 0001 Cooling only No display of AUTO HEAT 0000 Heat pump 10 Type 0001 4 way Air Discharge Cassette Depending on model type 11 Indoor unit capacity 0000 Unfixed 0001 to 0034 According to capacity type 12 Line add...

Page 50: ...ote controller 0000 Available can be performed 0001 Unavailable cannot be performed 0000 Available 92 Outside interlock release condition 0000 Operation stop 0001 Release com munica tion signal receive 0000 Operation stop DN Item Description Atshipment SET DATA 0000 0001 0003 0006 External static pressure DIP Switch position 0 008psi 55Pa 0 013psi 90Pa 0 017psi 120Pa 0 006psi 40Pa Standard Factory...

Page 51: ...iling 1 0001 12 6 3 8 10 10 3 3 11 6 3 5 12 6 3 8 13 9 4 2 14 5 4 4 15 1 4 6 10 6 3 2 12 6 3 8 High ceiling 3 0003 11 10 3 6 12 6 3 8 14 9 4 5 15 1 4 6 11 6 3 5 4 Way Air flow at outlet 4 way Compact 4 way Ceiling High wall type 0001 1 Value 4 way Cassette 1 Default value stored in EEPROM mounted on service P C board 1 Default value stored in EEPROM mounted on service P C board Type MMU AP H2UL 00...

Page 52: ...ays the corresponding indoor address Section B Displays 11 for 5 seconds from operation ON 5 Individual start Starts the specified indoor unit Notes The contents follow to the setup of remote controller The other indoor units keep the status as they are Setup Set SW01 to 16 set SW02 and SW03 to address No 1 to 40 to be started and push SW04 for 2 seconds or more Release Return SW01 SW02 SW03 to 1 ...

Page 53: ...n on power at the indoor side before power ON of outdoor unit Set SW01 SW02 SW03 on the interface P C board of the header unit to 2 5 1 C is displayed on 7 segment display A Test run is displayed on the remote controller of the indoor unit to be operated Check that C is displayed on 7 segment display B on the interface P C board of the header unit Push SW04 on the same board for 2 seconds or more ...

Page 54: ...ayed on the remote controller of the indoor unit to be operated Check that H is displayed on 7 segment display B on the interface P C board of the header unit Set SW01 SW02 SW03 on the interface P C board of the header unit to 2 6 1 H is displayed on 7 segment display A Be sure to turn on power at the indoor side before power ON of outdoor unit Return SW01 SW02 SW03 on the interface P C board of t...

Page 55: ...er of the indoor unit to be operated Check that 7 segment display B on the interface P C board of the header unit changed to C Match SW01 SW02 SW03 on the interface P C board of the header unit to 2 5 1 7 segment display A changes to F Be sure to turn on power of the indoor unit and then turn on power supplies at outdoor unit side Return SW01 SW02 Sw03 on the interface P C board of the header unit...

Page 56: ...de is not operated In this case operation ready or operation mode controlled is displayed on the remote controller If the discharge temperature does not change though COOL or HEAT has been set up from the remote controller misconnection is considered Push SW04 on the same board for 2 seconds or more The indoor unit to be started operates Push the push switch SW05 on the interface P C board of the ...

Page 57: ...eration changes to the individual test operation Match the rotary switches on the interface P C board of the header unit to the following table If an error is already displayed with SW01 SW02 SW03 being 1 1 1 return the status to normal one according to troubleshooting and then execute a test operation The unit which is not given with priority by heating priority control cooling priority control a...

Page 58: ...r 4 seconds or more to call up the service monitor mode The service monitor goes on and temperature of the CODE No 00 is firstly displayed 2 Push the temperature setup TEMP buttons to select the CODE No to be monitored For displayed codes refer to the table next page 3 Push SET button to determine the item to be monitored Then monitor the sensor temperature or operation status of indoor unit and t...

Page 59: ...0 1 1 1 1 1 1 1 1 1 1 10 10 10 10 psi psi F F F F F F F F pls pls A A A A 4350 435 psi 0080 80 F 0500 500pls 0135 13 5A CODE No Data name Display format Unit Remote controller display example U2 U1 60 61 62 63 64 65 66 67 50 51 52 53 54 55 56 57 Compressor 1 revolutions Compressor 2 revolutions Compressor 3 revolutions Outdoor fan mode Compressor IPDU 1 heat sink temperature Compressor IPDU 2 heat...

Page 60: ...or unit and inspection window of the electric parts box and check the 7 segment display The check code is displayed in the right hand section of the 7 segment display B U1 OOO OOO Check code To check the check code set the rotary switches SW01 SW02 SW03 to 1 1 1 If there is a sub code the display alternates between the check code OOO 3 seconds and the subcode OOO 1 second 2 Check the check code an...

Page 61: ...Value displayed in hexadecimal format B A 9 Oil equalization request Displayed through LED segment lighting pattern If element F shown on sketch at right turned on Header unit oil equalization request If element C shown on sketch at right turned on Follower unit oil equalization request B A 10 Refrigerant oil recovery operation Oil recovery in cooling C1 Normal C B Refrigerant recovery in heating ...

Page 62: ... 0 0 0 SV3A ON SV3B OFF SV3C OFF SV3D OFF 3 0 1 0 0 SV3A OFF SV3B ON SV3C OFF SV3D OFF 3 0 0 1 0 SV3A OFF SV3B OFF SV3C ON SV3D OFF 3 0 0 0 1 SV3A OFF SV3B OFF SV3C OFF SV3D ON 4 1 0 0 SV41 ON SV42 OFF SV43 OFF 4 0 1 0 SV41 OFF SV42 ON SV43 OFF 4 0 0 1 SV41 OFF SV42 OFF SV43 ON A 1 0 0 SV11 A B ON SV14 OFF SV3F OFF A 0 9 10 11 12 13 1 0 SV11 A B OFF SV14 ON SV3F OFF A 0 0 1 SV11 A B OFF SV14 OFF S...

Page 63: ... Data with negative value is displayed as Letter symbol Data 5 t d 2 Letter symbol Data 6 t d 3 Letter symbol Data 7 t S 1 Letter symbol Data 8 t S 2 Letter symbol Data 9 t E 1 Letter symbol Data 10 t E 2 Letter symbol Data 11 t L Letter symbol Data 12 t o Letter symbol Data SW01 SW02 SW03 Display detail F 1 TK2 sensor data TK3 sensor data TK4 sensor data TK5 sensor data Letter symbol 1 1 5 A B TK...

Page 64: ...ing release signal r 1 7 A Oil level judgment U 2 B Normal Low level L 8 A Compressor 1 operating current U 2 B is value of operating current in decimal format 9 A Compressor 2 operating current U 2 B is value of operating current in decimal format 10 A Compressor 3 operating current U 2 B is value of operating current in decimal format 11 A Fan operating current U 2 B is value of operating curren...

Page 65: ...ber 32 7 segment display section A 01 16 17 32 33 40 SW01 SW02 SW03 Indoor address 7 segment display section A 1 E 1 Latest error code of header unit U1 1 2 16 E 2 Latest error code of follower unit No 1 U2 Section A Section B D600 D601 D602 D603 D604 6 Display of Outdoor EEPROM Writing Error Code Displayed on Header Unit Only The latest error code written in the EEPROM of each outdoor unit is dis...

Page 66: ...is completed revert the SW01 SW02 SW03 setting to 1 1 1 1 Start operation 3 2 4 Interface P C board of outdoor unit for which oil level judgment results are Oil level judgment results are displayed Set SW01 SW02 SW03 to 1 16 1 Upon completion of checking revert SW01 SW02 SW03 setting to 1 1 1 Displayed digit Judgment result Description 0 Normal The amount of oil in the compressor is sufficient 1 2...

Page 67: ...urred only stops OFF SW16 DIP SW 4 bit bit 1 Option function Output exchange of external output P C boa According to the following setting contents OFF SW14 DIP SW 4 bit bit 1 Line address setup OFF bit 1 bit 2 OFF OFF Compressor operation output ON OFF Display of system operation ratio bit 2 OFF bit 2 OFF bit 3 OFF bit 4 OFF SW13 DIP SW 4 bit bit 4 Line address setup Used by combining with SW14 O...

Page 68: ...rol 1 Standard specification Corresponds to 2 core wire Normal 3 core wire Successive MAKE signal or 4 core wire Successive MAKE or Pulse signal 2 core wire Successive MAKE signal J09 J12 Setup for service P C board Model setup O Approx 75 Normal The mode is changed a mode which selected the operation mode of the indoor unit at not selected side O J12 O At shipment from factory 4 O MMY MAP2244F O ...

Page 69: ... to the same refrigerant line fully open Are the characteristics of the TK1 TK2 TK3 TK4 or TK5 sensors of the unit that has replaced compressor correct To next page No No No Yes Yes Yes With the compressor s disconnected check the oil circuit in accordance with the procedure described below Open the balance pipe valves fully Correct the miswiring or connection TK1 CN531 TK2 CN532 TK3 CN533 TK4 CN5...

Page 70: ...th pressure applied to the check joint of with nitrogen manually open the SV3B valve If gas escapes from the suction pipe section of the disconnected compressor there is a leak from the SV3A valve Replace the part Clogging of SV3E valve Clogging of oil return distributor I 8 With pressure applied to the check joint of with nitrogen manually open the SV3E valve If gas does not escape from the sucti...

Page 71: ...alve Other connected unit G Oil level low detection and protection H07 XX Oil level low Oil return distributor Corresponding unit J Oil level low detection and protection H07 XX Oil level low SV3C bypass capillary Corresponding unit K Oil level detection circuit error H16 04 Oil circuit error SV3A valve Corresponding unit E Oil level low detection and protection H07 XX Oil level low SV3C valve Cor...

Page 72: ...tor SV 3D Oil separator Liquid tank Fusible plug FP SV 14 TK 1 SV 3E TK 5 Oil header SV 3A Solenoid valve Capillary tube Check valve Check joint Tempe sensor Distributor Strainer Balance pipe serviec valve Suction gas side serviec valve Dischage gas side serviec valve Liquid side serviec valve Check joint Liquid pipe SV 3B TK 2 SV 41 TD 1 SV 3C TK 4 Comp 1 Comp 2 High pressure SW High pressure SW ...

Page 73: ... and protection H07 XX Oil level low SV3F valve Corresponding unit J Oil level low detection and protection H07 XX Oil level low Oil return distributor Corresponding unit K Oil level low detection and protection H07 XX Oil level low SV3C bypass capillary Corresponding unit L Oil level detection circuit error H16 04 Oil circuit error SV3A valve Corresponding unit E Oil level low detection and prote...

Page 74: ...r Liquid tank Fusible plug SV 14 TK 1 TK 2 TK 3 SV 3E TK 5 Oil header SV 3A Solenoid valve Capillary tube Check valve Check joint Tempe sensor Distributor Strainer Balance pipe serviec valve Suction gas side serviec valve Dischage gas side serviec valve Liquid side serviec valve Liquid pipe SV 3B SV 3F SV 41 TD 1 SV 3C TK 4 Comp 1 Comp 2 High pressure SW High pressure SW High pressure SW SV 42 SV ...

Page 75: ... SVD SVS O SVDD circuit O All cooling SV11 ON Mainly cooling Room cooling Mainly heating Room cooling O SVDD circuit O All heating Mainly cooling Room heating Mainly heating Room heating Refrigerant circulating sound may be heard from SVDD valve circuit z Indoor unit flow selector unit O All heating Mainly cooling Room heating Mainly heating Room heating Refrigerant circulating sound may be heard ...

Page 76: ...eating Refrigerant i mpact sound is heard at defrost time z Indoor unit flow selector unit O O SVSS circuit All heating Mainly cooling Indoor heating Mainly heating Indoor heating Refrigerant sound may be heard from SVSS valve circuit Temperature of suction gas pipe at outdoor side of the selector unit is higher than that of normal selector unit Alle cooling SV11 OFF O Check valve leakage Refriger...

Page 77: ...ON SVS ON SVSS SVDD Suction gas pipe Discharge gas pipe Liquid pipe Suction gas pipe Discharge gas pipe Liquid pipe Suction gas pipe Discharge gas pipe Liquid pipe Suction gas pipe Discharge gas pipe Liquid pipe SDV SVS Cooling operation Indoor unit Cool Heat FS unit Not cooled Cooling operation Warm wind is out Heating operation Cool wind is out Cooling operation Warm wind is out SV SV SV SV SVSS...

Page 78: ...ON OFF OFF Normal operation Cooling thermo OFF 3 Cooling operation OFF ON OFF OFF Cooling mode is not applied to the indoor unit B Fan status H06 An error Low pressure protective operation may occur 2 Heat is set on remote controller Indoor unit A Indoor unit B Cool Heat FS unit Symptom SVS SVSS SVD SVDD Heating operation 1 Heating operation OFF OFF ON OFF Normal operation Heating operation 2 Heat...

Page 79: ... see Notes 2 and 3 All the compressors in the same unit fail A fault occurs in a compressor motor coil e g a layer short circuit A fault occurs in a refrigerating cycle part fan or related part or electrical part A fault occurs in a temperature sensor or pressure sensor Faulty Faulty Example Prohibited Example Prohibited Backed up compressor Backed up compressor Two backed up compressors Faulty Fa...

Page 80: ...r model SW06 SW06 Bit 1 Bit 2 Bit 3 Bit 4 Bit 1 Bit 2 Bit 3 Bit 4 Factory default setting When compressor No 1 front left is faulty When compressor No 2 front center is faulty When compressor No 3 front right is faulty Two compressor model Factory default setting OFF ON OFF OFF OFF ON OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF When compressor No 1 front le...

Page 81: ...r unit The following work is common to the header unit and follower units in the system 2 Set the DIP switches of SW06 provided on the interface P C board of the outdoor unit with the faulty compres sor as shown in the table below Three compressor model SW06 SW06 Bit 1 Bit 2 Bit 3 Bit 4 Bit 1 Bit 2 Bit 3 Bit 4 Factory default setting Outdoor unit backup Two compressor model Factory default setting...

Page 82: ...r remove the motor leads before the power is turned on Setup of failed outdoor unit 1 Connect the check joint of liquid pipe and the low pressure side check joint using a charge hose and purge the hose of air to recover refrigerant from the liquid tank and heat exchangers 2 Fully close the liquid pipe service valve and service valve at discharge gas side of the failed outdoor unit Leave the servic...

Page 83: ...t No as an outdoor unit for pressure adjustment Identifying Unit No The unit No is the number displayed on the 7 segment display when SW01 02 03 are set to 1 1 1 U represents the unit No Setup of outdoor units other than unit for pressure adjustment and failed unit 9 Leaving the balance pipes of the unit for pressure adjustment and the failed unit fully open fully close the balance pipe service va...

Page 84: ...the header outdoor unit to 1 2 2 to have the low pressure sensor output MPa displayed on the 7 segment display 6 Approx 10 minutes after the system starts up fully close the suction gas pipe service valve of the failed outdoor unit Setup of outdoor unit for pressure adjustment 7 Select the header unit as the unit for pressure adjustment Setup of outdoor units other than header unit and failed unit...

Page 85: ...ox 10 minutes after system startup fully close suction gas pipe service valve Select header unit as unit for pressure adjustment Wait until low pressure sensor outputs of failed outdoor unit and outdoor unit for pressure adjustment become almost identical and after letting system continue operating for while longer fully close gas pipe service valve While monitoring low pressure sensor output adju...

Page 86: ...to the capacity of the failed outdoor unit See the table below Example If a 096 type outdoor unit is under repair in a 216 type system Amount of refrigerant required by system as it was initially 216 type in capacity 82 6 lb Amount of refrigerant required by system with available outdoor units only 120 type in capacity 51 8 lb Amount of refrigerant to be removed from system 82 6 51 8 30 8 lb 3 Set...

Page 87: ... fully close To maintain fully open state turn off the power switch of the outdoor unit within 2 minutes of the short circuiting of the CN30 pins SW12 CN30 PMV operation Bit 2 Bit 3 Bit 4 Bit 1 OFF OFF OFF Short circuit PMV1 and 2 fully open for 2 minutes OFF ON OFF OFF Short circuit PMV4 fully opens for 2 minutes OFF 2 Be sure to perform vacuuming in from the three check joints shown in the diagr...

Page 88: ...87 Replacing Compressors WARNING In situations such as indoor unit relocation and repairs it is not possible to recover all the refrig erant held by the system in the outdoor units It could cause a serious accident such as blow out or injury Be sure to perform refrigerant recovery using a refrigerant recovery device WARNING When detaching a pipe by heating with a burner a welded joint take care as...

Page 89: ... in faulty compressor A gal cc 0 A 0 264gal 1000cc 1 Adjust the amount of oil in the new compressor to 0 264gal 1000cc Lay the new compressor down and draw 0 238gal 900cc of oil via the oil equalization pipe Notes Do not draw more than 0 238gal 900cc of oil as it may cause damage to the compressor If the faulty compressor contained 0 132gal 500cc or less there may have been a problem with the oil ...

Page 90: ...llowing the steps below 1 Combined amount of oil in faulty and normal compressors A B gal cc 0 A B 0 528 2000 1 Adjust the amount of oil in the two new compressors to 0 264gal 1000cc each total 0 528gal 2000cc Lay the compressors down and draw 0 238gal 900cc of oil from each of them via their oil equalization pipes Notes Do not draw more than 0 238gal 900cc of oil from a compressor as it may cause...

Page 91: ... of oil in faulty compressor and two normal compressors A B C gal cc 0 A B C 0 793 3000 1 Adjust the amount of oil in the three new compressors to 0 264gal 1000cc each total 0 739gal 3000cc Lay the compressors down and draw 0 238gal 900cc of oil from each of them via their oil equalization pipes Notes Do not draw more than 0 238gal 900cc of oil from a compressor as it may cause damage If the fault...

Page 92: ... open PMV1 2 and 4 If they are closed the heat exchangers of the outdoor unit cannot be vacuum pumped Connect a vacuum pump consecutively to the check joints placed in the liquid and discharge pipes and on the high pressure side of the suction pipe and turn it on Operate the vacuum drying until the vacuum gauge indicates 1 mmHg Method to fully open PMV manually 1 Turn on the power switch of the ou...

Page 93: ... 2 89 2 91 2 93 2 95 2 97 1 46 1 48 1 50 1 52 1 54 1 56 1 58 1 60 1 62 1 64 1 66 1 67 1 69 1 71 1 73 1 75 1 77 1 79 1 81 1 83 1 85 1 87 1 89 1 90 1 92 1 94 1 96 1 98 2 00 2 02 2 04 2 06 2 08 2 10 2 12 2 13 2 15 2 17 2 19 2 21 2 23 2 25 2 27 2 29 2 31 2 33 2 35 2 36 2 38 2 40 2 42 212 215 218 220 223 226 229 232 235 238 241 242 245 248 251 254 257 260 262 265 268 271 274 276 278 281 284 287 290 293...

Page 94: ...5 2 97 0 49 0 49 0 50 0 51 0 51 0 52 0 53 0 53 0 54 0 55 0 55 0 56 0 56 0 57 0 58 0 58 0 59 0 60 0 60 0 61 0 62 0 62 0 63 0 64 0 64 0 65 0 65 0 66 0 67 0 67 0 68 0 69 0 69 0 70 0 71 0 71 0 72 0 72 0 73 0 74 0 74 0 75 0 76 0 76 0 77 0 78 0 78 0 79 0 79 0 80 0 81 71 71 73 74 74 75 77 77 78 80 80 81 81 83 84 84 86 87 87 88 90 90 91 93 93 94 94 96 97 97 99 100 100 102 103 103 104 104 106 107 107 109 1...

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