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Copyright 2020 CAC/BDP    

3300 Riverwood Parkway Atlanta GA, 30339  

 

Edition Date: 07/20                                                                       Catalog No. IM-40MBAA-01

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

                                  

Replaces: NEW

             

TROUBLESHOOTING

For ease of service, the systems are equipped with diagnostic code display LEDs on both the indoor and outdoor units. The outdoor diagnostic 
display consists of two LEDs (red and green) on the outdoor unit board and is limited to a few errors. The indoor diagnostic display is a 
combination of flashing LEDs on the display panel or the front of the unit. If possible, always check the diagnostic codes displayed on the 
indoor unit first before consulting a service technician. The diagnostic codes, displayed in the indoor and outdoor units, are listed in Table 17.

Table 17 — Indoor Unit Diagnostic Guides

For additional diagnostic information, refer to the indoor unit service manual. 

ADVANCED SERVICE AND INSTALLATION FUNCTIONS

Refer to the service manual of the Wireless Remote Controller for access to advanced function such as:
• Auto-Start Function
• Temperature Compensation

• Filter reminder
• Indoor Fan Motor Speed Control after set temperature is reached
• Lowest or Highest Temperature Setting
• Static Pressure Setting
All changes should be performed 

ONLY

 by authorized professionals.

RUNNING LED

TIMER LED

DISPLAY

ERROR INFORMATION

--

--

dF

Defrost

--

--

cF

Warming in heating mode

--

--

SC

Self clean

--

--

CL

Clean filter

--

--

nF

Replacing filter

--

--

FP

Heating in room temperature under 8°C

--

--

FC

Forced cooling

--

--

AP

AP mode of WIFI connection

--

--

CP

Remote start stop contact is open

--

--

AF

Constant Air Flow (only for Duct)

--

--

LL

Remote or Wire controller Lock 

--

--

d1

Receive DR1 signal

--

--

d2

Receive DR2 signal

--

--

d3

Receive DR3 signal

--

--

dE

DR input error signal

1 time

OFF

E0

Indoor unit EEPROM parameter error

2 times

OFF

E1

Indoor/outdoor unit communication error

4 times

OFF

E3

The indoor fan speed is operating outside of the normal range

5 times

OFF

E4

Indoor room temperature sensor T1 is in open circuit or has short circuited

6 times

OFF

E5

Evaporator coil middle temperature sensor T2 is in open circuit or has short circuited

7 times

OFF

EC

Refrigerant leakage detection

8 times

OFF

EE

Water-level alarm malfunction

9 times

OFF

E8

Communication error between master and slave unit (for twins system)

10 times

OFF

E9

Another indoor unit malfunction (for twins system)

11 times

OFF

Ed

Outdoor unit malfunction

1 time

ON

F0

Current overload protection

2 times

ON

F1

Outdoor room temperature sensor T4 is in open circuit or has short circuited

3 times

ON

F2

Condenser coil temperature sensor T3 is in open circuit or has short circuited

4 times

ON

F3

Compressor discharge temperature sensor TP is in open circuit or has short circuited

5 times

ON

F4

Outdoor unit EEPROM parameter error

6 times

ON

F5

The outdoor fan speed is operating outside of the normal range

7 times

ON

F6

Evaporator coil outlet temperature sensor T2B is in open circuit or has short circuited (for free-

match indoor units)

11 times

ON

FA

Communication error between indoor two chips 

1 time

FLASH

P0

IPM malfunction or IGBT over-strong current protection

2 times

FLASH

P1

Over voltage or over low voltage protection

3 times

FLASH

P2

Top temperature protection of compressor

5 times

FLASH

P4

Inverter compressor drive error

6 times

FLASH

--

Indoor units mode conflict (match with multi outdoor unit) 

7 times

FLASH

P6

Low pressure protection

8 times

FLASH

P7

IGBT temperature sensor TH is in open circuit or has short circuited

Summary of Contents for 40MBAAQ24XA3

Page 1: ...g and work gloves Have a fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in the literature and attached to the unit Consult local building codes and the current editions of the National Electrical Code NEC NFPA 70 In Canada refer to the current editions of the Canadian Electrical Code CSA C22 1 Recognize safety information This is the saf...

Page 2: ...nd accessories to install the system Improper installation may result in water leakage electrical shock and fire or cause the equipment to fail Keep the installation manual in a safe place and do not discard any accessories until the installation has been completed Table 2 Accessories NOTE The wireless remote controller is used only for initial static pressure and airflow setup Fig 2 Air Regulator...

Page 3: ...299 13 3 339 3 0 75 2 5 64 4 9 124 6 8 174 1 7 44 A HEIGHT 48 1 1222 C WIDTH 19 7 501 4 8 121 2 4 61 6 7 171 2 2 57 D DUCT 18 2 462 E DUCT 10 3 262 B DEPTH 21 1 535 0 8 21 0 5 13 0 6 16 18 4 466 19 7 500 Air Outlet Air Inlet Ø1 7 Ø43 Ø1 3 Ø34 Ø 0 8 Ø 21 Ø1 3 Ø34 Ø1 7 Ø43 Ø0 8 Ø21 Filter Coil Blower Nominal Filter Size 20 x 16 x 1 inches 515 x 442 x 25 mm Liquid Line Ø3 8 Ø9 5 G a s L i n e Ø 5 8 Ø...

Page 4: ... compensation NOTE DO NOT install the indoor or outdoor units in a location with special environmental conditions For those applications contact your Ductless representative OPERATING RANGE MIN MAX F C Cooling Heating Indoor DB 62 90 17 32 32 86 0 30 Indoor WB 59 84 15 29 PRODUCT INSTALLATION Installation must be performed by an authorized dealer or specialist A defective installation can cause wa...

Page 5: ...nit is installed over a finished ceiling and or living area building codes may require a field supplied secondary condensate pan to be installed under the entire unit Some localities may allow as an alternative the running of a separate secondary condensate line Consult the local codes for additional restrictions or precautions NOTE Nuisance sweating may occur if the unit is installed in a high hu...

Page 6: ...et 5 Install the drain lines Fig 8 Vertical Upflow Installations Fig 9 Horizontal Right Installations NOTE For a horizontal right installation secondary condensate pan field supplied must be installed refer to local codes B Downflow or Horizontal Left Installation For the Horizontal Left installation and the Vertical Downflow installation the direction of the evaporator should be changed and the d...

Page 7: ...and drain pan assembly 9 Reinstall the pipe temperature sensor in its original position Attach the room temperature sensor to the evaporator output pipe protection sleeve Fig 16 Reinstall the Pipe Temperature Sensor 10 Reinstall the drain pan support bracket and locking clip Fig 17 Reinstall the Drain Pan Fixed Plate Remove the filter plate Bracket Clip Room Temperature Sensor Pipe Temperature Sen...

Page 8: ...equipped with the electric auxiliary heat module please check the electric auxiliary heat module specification that is compatible with the unit to avoid unnecessary consequences caused by improper matching INSTALLATION REQUIREMENTS NOTE Installation of Auxiliary Electric Heat Module should be completed before installing the discharge ductwork to insure proper alignment of the inside support bracke...

Page 9: ...le into the opening made by removal of the sheet metal cover s Ensure the two support rod ends are on the opposite bulkhead Fig 25 Insert Heating Module 5 Use the 3 screws 6 screws for 15K or 20K removed previously and fasten the outer cover of the module into the access hole Fig 26 Install the Electric Heating Module 6 Secure one end of the electric heating terminal board to the sheet metal slot ...

Page 10: ...requirements and local codes see Table 6 on page 11 Choose the power cord and the power cord installation location see Figure 31 Each circuit breaker group needs to connect to the power input line Where needed Jumper L1 and L2 to the terminals for the other contactor Fig 31 Choose the power cord installation location 12 See Figure 32 for the securing position of the power supply ground wire Secure...

Page 11: ...t do not have a 90 degree elbow and 10ft 3m of main duct to first branch takeoff may require internal acoustical insulation lining As an alternative fibrous ductwork may be used if constructed and installed in accordance with the latest edition of the SMACNA construction standard on fibrous glass ducts Both acoustical lining and fibrous ductwork shall comply with the National Fire Protection Assoc...

Page 12: ...lood 2 Use a 2 5in 65mm core drill to drill a hole in the wall Make sure the hole is drilled at a slight downward angle so that the outdoor end of the hole is lower than the indoor end by about 0 5in 12mm This will ensure proper water drainage Place the protective wall cuff in the hole This protects the edges of the hole and helps seal the hole once the installation is complete Fig 40 Drill hole N...

Page 13: ... an airtight seal a After removing the burrs from the cut pipe seal the ends with PVC tape to prevent foreign materials from entering the pipe b Sheath the pipe with insulating material c Place flare nuts on both ends of the pipe Make sure they are facing the right direction Once the ends are flared it is impossible to put them on or change their direction Fig 43 Copper pipe and flare nut d Remove...

Page 14: ...damaging the tubing 6 After connecting the copper pipes to the outdoor unit wrap the power cable signal cable and the piping together with binding tape NOTE While bundling these items together DO NOT intertwine or cross the signal cable with any other wiring 7 Thread this lineset through the wall to connect to the indoor unit 8 The liquid line sweat connection is 3 8 O D copper and the suction lin...

Page 15: ...hod is the most positive way of assuring a system is free of air and moisture see Fig 50 Fig 50 Deep Vacuum Graph Triple Evacuation Method The triple evacuation method should be used when vacuum pump is not capable of pumping down to 500 microns and system does not contain any liquid water Refer to Fig 51 and proceed as follows 1 Attach refrigeration gauges and evacuate system down to 28 in of mer...

Page 16: ...unit would lose power A disconnect switch is not required on the indoor unit side on the wiring between the outdoor and indoor unit A 3 pole disconnect purchased separately may be used for extra protection between the indoor and outdoor Unit Fig 54 Wiring Connection of Indoor Unit The Auxiliary Heater must have a separate branch electric circuit with a field supplied disconnect switch located with...

Page 17: ...ne is a ground wire To minimize voltage drop the factory recommended wire size is 14 2 power stranded with a ground Communication Wiring A separate 2 wire cable stranded shielded copper conductor with a 600 volt rating and double insulated copper wire must be used as the communication wire from the outdoor unit to the indoor unit Please use a separate shielded 16AWG stranded control wire Table 11 ...

Page 18: ... 208 230 1 60 5 0 20 120 36 5 0 42 250 48 5 0 65 400 3 S 1 L1 2 L2 208 230 1 60 Power Supply Main 1 L1 208 230 1 60 2 L2 3 S 1 L1 2 L2 CONNECTING CABLE OUTDOOR TO INDOOR Indoor Unit Power Supply 208 230 1 60 Indoor Signal High GND Ground Power to Indoor Unit 208 230 1 60 GND FIELD POWER SUPPLY Voltage Indoor SignaLl High Voltage 208 230 1 60 L1 L2 FIELD POWER SUPPLY Indoor Unit Power Supply Low vo...

Page 19: ...e and the LED flashes quickly there is something wrong with the system Refer to the TROUBLESHOOTING section for the detailed fault codes Temperature Sensor The unit has one temperature sensor which is called a Pipe Temperature Sensor If the temperature sensor is damaged the system shuts down and the LED flashes repeatedly Connector Table 13 Connector Table 14 Mode Setting Table 15 Fan Speed Settin...

Page 20: ...troller 4 To set the parameters for airflow adjustment When the system is OFF perform the following steps a Press and hold COPY for approximately 4 seconds b Press or to scroll through the menu and make a selection either SP or AF NOTE T1 T2 T2b T3 T4 are sub menus for thermistors DO NOT select to set the external static pressure Fig 66 Wired Controller Menu Selection 1 If setting the external sta...

Page 21: ...goes blank The remote controller exits the MODIFICATION mode After you power OFF the unit power the unit ON again and the unit retains the setting value Fig 68 RG57 Remote Controller FP Activate Disable freeze protection function ON OFF Turns the unit on or off MODE Scrolls through operation modes as follows AUT O COOL DR Y HEA T FAN FAN SLC Selects fan speeds in the following order AUT O LOW MED ...

Page 22: ...80 1 400 1 310 1 215 1 105 950 825 Low 1 525 1 450 1 372 1 280 1 190 1 074 935 785 650 36 SP1 High 1 335 1 270 1 165 1 062 950 810 645 450 240 Medium 1 185 1 100 990 845 685 520 335 Low 1 020 915 775 600 405 SP2 High 1 475 1 405 1 320 1 230 1 125 990 855 715 570 Medium 1 340 1 260 1 172 1 055 920 775 630 460 275 Low 1 205 1 115 1 011 870 715 555 380 SP3 High 1 648 1 585 1 515 1 440 1 354 1 235 1 1...

Page 23: ...cPressurein WC High Medium Low SP4 0 200 400 600 800 1 000 1 200 1 400 1 600 1 800 2 000 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 AirŇow CFM StaƟcPressurein WC High Medium Low SP1 0 200 400 600 800 1 000 1 200 1 400 1 600 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 AirŇow CFM StaƟcPressurein WC High Medium Low SP2 0 200 400 600 800 1 000 1 200 1 400 1 600 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 AirŇow CFM StaƟc Pr...

Page 24: ...FM StaƟcPressurein WC High Medium Low SP2 0 200 400 600 800 1 000 1 200 1 400 1 600 1 800 2 000 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 AirŇow CFM StaƟc Pressurein WC High Medium Low SP3 0 200 400 600 800 1 000 1 200 1 400 1 600 1 800 2 000 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 AirŇow CFM StaƟc Pressure in WC High Medium Low SP4 0 500 1 000 1 500 2 000 2 500 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 AirŇow CF...

Page 25: ...and reinstall the test cover NOTE If the unit malfunctions or does not operate according to your expectations please refer to the Troubleshooting section of the owner s manual before calling customer service SYSTEM CHECKS 1 Conceal the tubing where possible 2 Ensure the drain tube slopes downward along its entire length 3 Ensure all tubing and connections are properly insulated 4 Fasten the tubes ...

Page 26: ... Remote or Wire controller Lock d1 Receive DR1 signal d2 Receive DR2 signal d3 Receive DR3 signal dE DR input error signal 1 time OFF E0 Indoor unit EEPROM parameter error 2 times OFF E1 Indoor outdoor unit communication error 4 times OFF E3 The indoor fan speed is operating outside of the normal range 5 times OFF E4 Indoor room temperature sensor T1 is in open circuit or has short circuited 6 tim...

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