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Carrier 40MBQB09D--3, Руководство по обслуживанию

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21

DIAGNOSIS AND SOLUTION (CONT)

Communication malfunction between indoor and outdoor units diagnosis and solution (E1)

Error Code

E1

Malfunction decision conditions

Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this
condition happens four times continuously.

Supposed causes

S

Wiring mistake

S

Indoor or outdoor PCB faulty

(Vs is the voltate between S and L2 of the 
outdoor unit. Red Probe on S 
                  & Black Probe on N

Power off, then restart the unit 2 minutes later.

Check the outdoor wiring connection.

Check whether 

the reactor is normal.

Replace the reactor.

Replace the outdoor main
PCB. Power ON. Is the error 
corrected?

Replace the indoor main PCB. 

Check the indoor wiring connection.

Replace the indoor main PCB. Power 
on. Is the error corrected?

Replace the outdoor main PCB.

Fig. 26 – Troubleshooting

Содержание 40MBQB09D--3

Страница 1: ...d with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death...

Страница 2: ...R UNIT 40 MB 3 09 40 FAN COIL UNIT MB MODEL VOLTAGE 3 208 230 1 60 NOMINAL CAPACITY 09 3 4 TON 12 1 TON 18 1 1 2 TONS 24 2 TONS 36 3 TONS 48 4 TONS INDOOR FAN COIL TYPE D DUCTED STYLE 01 16 Week of Ma...

Страница 3: ...on Size Liquid In mm 1 4 6 35 1 4 6 35 1 4 6 35 3 8 9 52 3 8 9 52 3 8 9 52 Pipe Connection Size Suction In mm 3 8 9 52 1 2 12 7 1 2 12 7 5 8 16 5 8 16 5 8 16 Indoor Coil Face Area Sq Ft 1 4 1 4 1 4 2...

Страница 4: ...0 13 8 350 4 7 120 5 6 143 3 7 95 5 9 150 39 9 18 1 12 27 6 700 8 2 210 25 635 22 4 570 2 5 65 19 4 493 1 3 35 4 6 119 23 4 595 7 8 200 3 1 80 29 1 740 13 8 350 4 7 120 5 6 143 3 7 95 5 9 150 39 9 18...

Страница 5: ...ty Kbtu A B C 9K 27 56 in 70cm 8 27 in 21cm 11 81 in 30cm 12K 27 56 in 70cm 8 27 in 21cm 11 81 in 30cm 18K 36 22 in 92cm 8 27 in 21cm 11 81 in 30cm 24K 36 22 in 92cm 10 63 in 27cm 11 81 in 30cm 36K 44...

Страница 6: ...o the outdoor unit The field supplied power wiring from the outdoor unit to the indoor unit consists of three 3 wires and provides the power for the indoor unit Two wires are high voltage AC power and...

Страница 7: ...Diagram Notes 1 Do not use thermostat wire for any connection between indoor and outdoor units 2 All connections between indoor and outdoor units must be as shown The connections are sensitive to pol...

Страница 8: ...Room and Pipe temperature CN8 CN18 Output 320VDC High voltage Connection of the Reactor CN9 Output 5VDC Connection of the CCM CN10 CN10A Output 12VDC Connection of the Display board CN11 CN14 Output 2...

Страница 9: ...oom and Pipe temperature CN8 CN18 Output 320VDC High voltage Connection of the Reactor CN9 Output 5VDC Connection of the CCM CN10 CN10A Output 12VDC Connection of the Display board CN11 CN14 Output 22...

Страница 10: ...oom and Pipe temperature CN8 CN18 Output 320VDC High voltage Connection of the Reactor CN9 Output 5VDC Connection of the CCM CN10 CN10A Output 12VDC Connection of the Display board CN11 CN14 Output 22...

Страница 11: ...Water level switch CN6 Output 5VDC Connection of the Room and Pipe temperature CN7 Output 5VDC Connection of the Outer Pipe temperature CN9 Output 5VDC Connection of the CCM and RS 485 CN10 CN10A Out...

Страница 12: ...Water level switch CN6 Output 5VDC Connection of the Room and Pipe temperature CN7 Output 5VDC Connection of the Outer Pipe temperature CN9 Output 5VDC Connection of the CCM and RS 485 CN10 CN10A Out...

Страница 13: ...round If it is necessary to bury the lines not more than 36 in 914 mm should be buried Provide a minimum 6 in 152 mm vertical rise to the service valves to prevent refrigerant migration 4 Both lines m...

Страница 14: ...pump Low side valve Fig 11 Manifold Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accuratelymeasuring this v...

Страница 15: ...malfunctioning temperature sensor the air conditioner keeps working yet displays the error code in case of any emergency use When there is more than one malfunctioning temperaturesensor the air condi...

Страница 16: ...and the T3 temperature change value range plus the compressor running time During the DEFROSTING mode the compressor continues to runs the indoor and outdoor motors stop and the indoor unit defrost la...

Страница 17: ...start up for 1 minute before powering on In other instances the compressor waits three 3 minutes before restarts Refrigerant Leakage Detection With this new technology the display area displays EC wh...

Страница 18: ...using standard air conditioning repair techniques For problems requiring measurements at the control boards note the following 1 Always disconnect the main power 2 When possible check the outdoor boar...

Страница 19: ...ent temperature sensor T4 3 times O F2 Open circuit or short circuit of condenser coil temperature sensor T3 4 times O F3 Open circuit or short circuit of Compressor discharge temperature sensor T5 5...

Страница 20: ...n conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip Supposed causes S Installation mistake S PCB faulty Troubleshooting Fig 23 Troubleshooting Fig 24 Indoor PCB Fig...

Страница 21: ...Wiring mistake S Indoor or outdoor PCB faulty Vs is the voltate between S and L2 of the outdoor unit Red Probe on S Black Probe on N Power off then restart the unit 2 minutes later Check the outdoor...

Страница 22: ...ternately between 50V to 50V If the outdoor unit has a malfunction the voltage will move alternately with positive value While if the indoor unit has a malfunction the voltage will be a certain value...

Страница 23: ...lfunction decision conditions When the indoor fan speed keeps too low 300RPM for certain time the unit stops and the LED displays the failure Supposed causes S Wiring mistake S Fan assembly faulty S F...

Страница 24: ...in fan motor connector If the value of the voltage is not in the range showing in below table the PCB must have problems and need to be replaced Fig 30 Indoor DC fan motor DC motor voltage input and...

Страница 25: ...ution E4 E5 F1 F2 F3 Error Code E4 E5 F1 F2 F3 Malfunction decision conditions If the sampling voltage is lower than 0 06V or higher than 4 94V the LED displays the failure Supposed causes S Wiring mi...

Страница 26: ...ontinuous 4 seconds and this situation happens 3 times the display area will show EC and AC will turn off Supposed causes S T2 Sensor faulty S Indoor FCB faulty S System problems such as leakage or bl...

Страница 27: ...diagnosis and solution Error Code EE Malfunction decision conditions If the sampling voltage is not 5V the LED will display the failure Supposed causes S Wiring mistake S Water level switch faulty S...

Страница 28: ...n P0 Error Code P0 Malfunction decision conditions When the voltage signal that IPM send to compressor drive chip is abnormal the display LED shows P0 and AC turns off Supposed causes Wiring mistake I...

Страница 29: ...29 DIAGNOSIS AND SOLUTION CONT P U Fig 36 P U P V Fig 37 P V...

Страница 30: ...30 DIAGNOSIS AND SOLUTION CONT P W Fig 38 P W P N Fig 39 P N...

Страница 31: ...wer supply problems S System leakage or block S PCB faulty Check the power supply Check the connections and wires Stop the unit No Yes No Correct the connections or replace the wires Yes Replace the r...

Страница 32: ...faulty Check the air flow system of indoor and outdoor units Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units Yes No Yes Yes Power off then restart the unit 3 minut...

Страница 33: ...Supposed causes S Wiring mistake IPM malfunction outdoor fan ass y faulty S Compressor malfunction Outdoor PCB faulty Fig 43 Troubleshooting Main Parts Check Temperaturesensor checking Disconnect the...

Страница 34: ...7 171 1 29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0...

Страница 35: ...28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246 2 174 0 32 180 9 40 104 29 15 80 176 6 859 120 248 2 117 1 34 171 9 41 106 28 81 178 6 641 121 250 2 061...

Страница 36: ...Several M W P N U N U V V W W Red Pressure on Service Port Table 17 Cooling Chart _F _C Indoor Temp Outdoor Temp 75 23 89 85 29 44 95 35 105 40 56 115 46 11 BAR 70 8 2 7 8 8 1 8 6 10 1 BAR 75 8 6 8 3...

Страница 37: ...0 26 6 25 4 23 3 BAR 75 33 8 31 5 27 8 26 3 24 9 PSI 55 439 413 367 330 302 PSI 65 471 435 386 368 339 PSI 75 489 457 403 381 362 MPA 55 3 03 2 85 2 53 2 28 2 08 MPA 65 3 25 3 00 2 66 2 54 2 33 MPA 7...

Страница 38: ...the fan motor wire fan capacity wire room temperature sensor wire and evaporator temperature sensor wire 3 Remove the screws and remove the electronic control box 2 Remove the display board 1 Remove...

Страница 39: ...eat step 1 of No 1 Repeat step 2 of No 1 Press the four fixing holders from the four corners to remove the PCB 1 screw PCB Move the display board 2 Remove all the plugs or connectors connected to the...

Страница 40: ...the screw to remove the fan wheel Cut off the fastening belt to remove the room temperature sensor Stickers Rear beam 1 Unscrew the securing screws to remove the rear cover board 2 Unscrew the securin...

Страница 41: ...Repeat step1 of No 5 2 Unscrew the screws to remove the water collector assembly 7 Remove the evaporator 1 Remove the water collector Repeat step No 6 2 Remove the evaporator sensor 3 Remove the pipe...

Страница 42: ...crews to remove the evaporator 4 screws 1 screw Copyright 2017 Carrier Corp D 7310 W Morris St D Indianapolis IN 46231 Edition Date 01 17 Manufacturer reserves the right to change at any time specific...

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