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MCQUAY Service Guide Book

Diagnosis

Ceiling Cassette A/C Series Inverter-X Model

Model

Board Handset

MCKX 20/25A/AR

VA3.0

G17 / SLM3

MCKX 10/15/20C/CR

VA3.0

G17 / SLM3

POWER

(Green)

TIMER

(Orange)

SLEEP

(Red)

HEAT

(Red)

Error
Code

(SLM3)

Operation / Faulty

Indication

Action

- Cooling

mode

- Timer

- Sleep

mode

- Heating

mode

- Defrost

mode

Indoor temperature
sensor loose / short

Check indoor coil sensor
connection / change indoor
coil sensor

Outdoor temperature
sensor loose / short

Check outdoor coil sensor
connection / change
outdoor coil sensor

E3 Communication

error

Check connection wires
between indoor and
outdoor

Compressor overload
protection

If running ampere highly
increase, change the
compressor

E5 Pump

fault

Clear the clogging at drain
pipe. If pump is not
working, change the pump

Compressor overheat /
gas leak

Check for leakage & repair
/ Top up refrigerant

IPM / PFC / Partial
switching

Check supply voltage and
compressor phase

Outdoor over current

Check the input current
and discharge pressure

ON or OFF

BLINKING

1 time

2 times

3 times

4 times

5 times

6 times

Содержание 5MDS

Страница 1: ...SERVICE GUIDE BOOK...

Страница 2: ...URATION 6 1 Auxiliary Heater Conversion 33 6 2 Multi Split Conversion 36 6 3 U1 5 L208A Conversion 37 6 4 WMF U1 4 to L2EF Conversion 38 6 5 SQ Board for Wiring up to 1000m Conversion 39 6 6 Room Sens...

Страница 3: ...13 Water Source Heatpump Split Unit WSS 5WSS MWSS M5WSS 14 Horizontal Water Source Heatpump Unit WH MWH 15 Air Cooled Mini Chiller AC 4AC 5AC MAC M4MAC M5MAC 16 Single Split Condensing Unit SL 4SL 5S...

Страница 4: ...x 10 4 0 1 x 10 4 0 004 3 349 x 10 4 1 Flow Rate L s m3 hr m3 s U S GPM CFM 1 3 6 0 001 15 85 2 119 0 278 1 0 278 x 10 3 4 403 0 588 1000 3600 1 15850 2119 0 063 0 227 0 063 x 10 3 1 0 1337 0 472 1 7...

Страница 5: ...5300 Netware 3 SLM8 7 CE E Series 9 G17 SLM3 AC5300 Netware 3 SLM8 8 CC C Series 9 SLM3 Netware 3 SLM8 9 CC D Series 9 Netware 3 SLM3 10 SB B C Series SB 75 100B BR 9 SLM3 Netware 3 SLM8 SB 125 150B B...

Страница 6: ...W Series 9 G17 SLM3 AC5300 Netware 3 SLM8 16 CE EW Series 9 G17 SLM3 AC5300 Netware 3 SLM8 17 CC CW Series 9 SLM3 Netware 3 SLM8 18 SB BW Series 9 N A Mini Chiller 19 AC C Series AC 20 60C CR 9 C Pane...

Страница 7: ...COOL HEAT AUTO mode operation If it is activated in COOL mode the set temperature will be increase 0 5 C after 30 minutes 1 C after 1 hour and 2 C after 2 hours Whereas in HEAT mode the set temperatu...

Страница 8: ...uver at the desired direction 10 Sleep Mode Setting This function is available under COOL HEAT AUTO mode When it is activated in COOL mode the set temperature will be increased 0 5 C after 30mins 1 C...

Страница 9: ...ng mode the set temperature is increased by 0 5 C after 30 minutes 1 C after an hour and 2 C after 2 hours When the unit is operating under heating mode the set temperature is decreased by 1 C after 3...

Страница 10: ...minimum speed Press again to deactivate the function 6b Ionizer Function For WM G series only Press button to activate the negative ion function which will refresh the indoor air effectively 7 Sleep M...

Страница 11: ...ress again to stop the louver at the desired direction Swing mode selection for CK E model Press SWING button for 4 seconds to enter field setting mode While in field setting mode it will only show SW...

Страница 12: ...10 Clock time setting Press and hold button to set the clock time 11 ON timer setting 12 Sleep mode setting This function is available under COOL HEAT and AUTO mode When under cooling mode the set tem...

Страница 13: ...ting effect in any operation mode To start POWERFUL operation press button is displayed on the LCD POWERFUL operation ends in 20 minutes Then the system automatically operates again with the previous...

Страница 14: ...nts of the room The symbol is displayed on the LCD Air flow rate is set to AUTO COOL DRY The flap will go up HEAT The flap will go down To cancel COMFORT AIRFLOW operation press COMFORT button again T...

Страница 15: ...imer of the air conditioner unit the setting range is between 1 to 15 hours 6 SLEEP Mode This function can only be activated under cool or heating mode operation When it is activated under cool mode o...

Страница 16: ...3 different SWING MODE which are Mode 1 Mode 2 Mode 3 SWING MODE will not activate unless SWING is activated If no mode changes within 4 seconds unit will operate According to the selected SWING MODE...

Страница 17: ...tting DAY TUE TIMER 5 00pm OFF TMR 1 setting DAY TUE TIMER 5 00pm Outcome when RTC reaches 5 00pm on TUE when unit is on no respond when unit is off unit will turn on 8 DELAY TIMER Function Press the...

Страница 18: ...to disable set clock mode Under set clock mode the time of the present day can be set by pressing the respective MINUTE HOUR and DAY key 7 days timer Press the ON TIMER key to activate auto ON timer m...

Страница 19: ...restart until 3 minutes later to protect the compressor 2 Selecting Operating Mode Press the MODE key to select the type of operating mode Consecutive press of the key switches the operation over COO...

Страница 20: ...Y key HOUR key or MINUTE key If there is no further time related DAY HOUR and MINUTE key is pressed the unit will quit from the timer setting mode Set Event 3 Timer via remote control Optional This ti...

Страница 21: ...e panel can keep up to 20 faults alarm warning records 6 ECS Button 7 Downward Button Press the button once to view the Compressor s On Off or Defrost Status Press the button again to view the tempera...

Страница 22: ...if cooling is required 5 ALARM Button Press the ALARM button to view or clear the alarm history The panel can keep up to 20 faults alarm warning records 6 ECS Button Press to exit to previous Menu 7 D...

Страница 23: ...ll display on LCD 6 Auxiliary Heater Setting Under HEAT or FAN mode press HEATER SWING key to active heater Only for heater unit HEATER will display on LCD 7 Sleep Setting Press SLEEP key SLEEP will d...

Страница 24: ...day will display on LCD Panel Enter first timer setting the timer ON or OFF icon will display on the left and bottom of LCD panel the timer sequence number 1 will display on the top of LCD press or t...

Страница 25: ...ss ON OFF key to RUN or STOP the unit operation For Group On Off press ON OFF key for 5s and the unit number is twinkling is displayed on LCD panel Then press ON OFF key to turn on off all units 5 Mod...

Страница 26: ...only be set to TIMER ON the TIMER SET will display on LCD panel press to set hour and press to set minute press TIMER to finish the single timer setting B Week Timer Setting Week timer setting Include...

Страница 27: ...f indoor coil temperature 30 C OFF b Fan runs at low speed if indoor coil temperature 30 C and stop if indoor coil temperature 18 C ON c Cycle of low fan running for 30s and fan off for 120s and repea...

Страница 28: ...t speed If the indoor coil temperature crosses 37 C the indoor fan will run at low speed If indoor coil temperature 30 C the indoor fan will stop L208A LWS2 0 models There are 2 tables setting for HT_...

Страница 29: ...Note 1 5 C only valid for 2 and 3 compressors model For 4 compressors model maximum allowed is 1 0 C The default differential temperature is base on number of compressor model the setting is as below...

Страница 30: ...f Off On On Off On 8 Sequential Control Cool Mode The starting sequence for indoor fan outdoor fan and compressors is shown as below Start Indoor Outdoor fan 1 Compressor 1 Outdoor fan 2 Compressor 2...

Страница 31: ...ess X X Jumper Remained X Jumper Removed VALVE HEAT Jumper Location Model WM 05 25FW 1 VALVE jumper is plugged into JVLV connector on the emergency switchboard 2 HEAT jumper is plugged into JMODE conn...

Страница 32: ...umper The system can be configured as the jumper selection listed below Mode Application VALVE jumper HEAT jumper Heatpump Valve Valve less X Cooling Only Valve X Valve less X X Jumper Remained X Jump...

Страница 33: ...rol the board function as shown in Picture below Summary of Hardware Setting as table below Jumper Short Open 20 30C Set Temp Range 20 C 30 C 16 C 30 C Default TURBO_ QUIET Disable turbo quiet fan spe...

Страница 34: ...on U1 5 Heatpump with Auxiliary Heater To convert the standard U1 5 heatpump PCB to auxiliary heater application the following components need to be added onto the PCB 1 Heater relay 240V 20A 2 Transi...

Страница 35: ...ump with Auxiliary Heater To convert SB125 heatpump PCB to auxiliary heater application only need to add one heater relay as shown below 1 Place the JM Relay 240V 20A on the RY_HTR location 2 Solder a...

Страница 36: ...heatpump PCB to auxiliary heater application the following components need to be added onto the PCB 1 Shunt jumper 2 JM Relay 240VAC 20A Step 1 Place the shunt jumper at jumper header M2 Step 2 1 Plac...

Страница 37: ...it mode can be selected at the slide switch on the On Off Switch Board Preset at OFF The outdoor coil sensor has to be removed from the PCB as the reading is taken from the outdoor PCB directly Heatpu...

Страница 38: ...ite under Spare PARTs Ordering The Part number is PI C R0094 The L2 Spare PARTs Package contains the following items 1 L2 08A Heat Pump PCB 2 Room sensor indoor coil sensor inter connector wire outdoo...

Страница 39: ...CB for both U1 4 and L2EF is not compatible with each other therefore it is unable to change 3 only the display panel or On Off switch board from U1 4 to L2EF or L2EF to U1 4 4 For example if the disp...

Страница 40: ...son of Sequential Main Board SQMB01 Before After conversion Before After Work Indication WI Step 1 Remove Jumper J1 and J2 Step 2 Solder PART 2051 MAX1483 IC MAX1483 to U8 PART 2051 MAX1483 IC MAX1483...

Страница 41: ...ion for wiring up to 1000m Work Indication WI Step 1 Dismantle the BACK cover of Sequential LCD Step 2 Remove Jumper J1 J2 Step 3 Add Chip Resistor 1 10W 5 200K to R8 R9 and R10 Step 4 Add PART 100000...

Страница 42: ...ure sensor on the wired controller Netware 3 instead of room sensor located at indoor PCB BACK view of Netware 3 If the temperature sensor TH1 is required to be used as room sensor please follow the W...

Страница 43: ...d TIMER Orange DRY Orange Operation Faulty Indication Action Timer On Sleep mode On Dry mode Defrost mode Room air sensor contact loose short Check room sensor connection change room sensor Indoor coi...

Страница 44: ...l sensor contact loose short Check indoor coil sensor connection change indoor coil sensor E3 Outdoor coil sensor contact loose short Check outdoor coil sensor connection change outdoor coil sensor E4...

Страница 45: ...room sensor connection change room sensor E2 Indoor coil sensor contact open Check indoor coil sensor connection change indoor coil sensor E3 Outdoor coil sensor contact open Check outdoor coil senso...

Страница 46: ...or coil sensor E3 Outdoor coil sensor contact open Check outdoor coil sensor connection change outdoor coil sensor E4 Compressor overload Indoor coil sensor short Outdoor coil sensor short If running...

Страница 47: ...er On Sleep mode On Heating mode Heat LED blinking SLM3 only Frost prevention mode E4 Compressor overload protection If running ampere highly increase change the compressor E6 Pump fault Clear the clo...

Страница 48: ...ection change room sensor E2 Indoor coil sensor contact open Check indoor coil sensor connection change indoor coil sensor E3 Outdoor coil sensor contact open Check outdoor coil sensor connection chan...

Страница 49: ...in heating operation Heat LED blinking SLM3 only Defrost mode E1 Room air sensor contact loose short Check room sensor connection change room sensor E2 Indoor coil sensor contact open short Check ind...

Страница 50: ...or connection change room sensor E2 Indoor coil sensor contact open Check indoor coil sensor connection change indoor coil sensor E3 Outdoor coil sensor contact open Check outdoor coil sensor connecti...

Страница 51: ...k E4 Pipe water temperature fault Blinks 1 time COOL blinks E5 Model Board Handset MWM 07 25G2W W2 G17 SLM3 Netware 3 SLM8 MWM 301W W2 G17 SLM3 Netware 3 SLM8 MCK 20 50AW MWH W2 G17 SLM3 Netware 3 SLM...

Страница 52: ...ck room sensor connection change room sensor E2 Indoor coil sensor contact open Check indoor coil sensor connection change indoor coil sensor E3 Outdoor coil sensor contact open Check outdoor coil sen...

Страница 53: ...operation E1 Room air sensor contact loose short Check room sensor connection change room sensor E2 Indoor coil sensor contact loose open Check indoor coil sensor connection change indoor coil sensor...

Страница 54: ...contact loose short Check outdoor coil sensor connection change outdoor coil sensor E3 Communication error between indoor and outdoor Check the connection wires between indoor and outdoor E4 Compress...

Страница 55: ...2 Outdoor temperature sensor contact loose short Check outdoor coil sensor connection change outdoor coil sensor E3 Communication error between indoor and outdoor Check connection wires between indoor...

Страница 56: ...ture sensor loose short Check coil sensor connection change coil sensor E2 Outdoor temperature sensor loose short Check outdoor coil sensor connection change outdoor coil sensor E3 Communication error...

Страница 57: ...oor temperature sensor loose short Check outdoor coil sensor connection change outdoor coil sensor E3 Communication error Check connection wires between indoor and outdoor E4 Compressor overload prote...

Страница 58: ...e indoor coil sensor E2 Outdoor temperature sensor loose short Check outdoor coil sensor connection change outdoor coil sensor E3 Communication error Check connection wires between indoor and outdoor...

Страница 59: ...d Yellow 0 1 Outdoor ambient sensor error 1 5 DC fan motor feedback error 0 2 Outdoor coil sensor error 1 6 AC peak current error 0 3 Outdoor discharge sensor error compressor overheat 1 7 Outdoor suc...

Страница 60: ...Netware 3C A5CMY 20 25 28 40 50 ER C_2_01A GS01 G17 Netware 3C M5CCY10 15 20 25 28 38 50 60 CR C_2_01A Netware 3C SLEEP Red COOL HEAT Green Red TIMER Orange Operation Faulty Indication Cooling mode He...

Страница 61: ...is in fault 1 Flashes unit error code similar to wireless handset 2 Flashes up to 11 running parameters when tact switch is pressed in the sequence corresponding to the parameter number refer to Unit...

Страница 62: ...B AND IPM PCB 4 WAY VALVE ERROR DC VOLTAGE OUT OF RANGE COMPRESSOR MOTOR LOCK COMPRESSOR OVERLOADED DISCHARGE PIPE OVERHEAT ANTIFREEZE COOLING HEAT EXCHANGER OVERHEAT HEATING HEAT EXCHANGER OVERHEAT C...

Страница 63: ...9 F OP Working room sensor is open SH Working room sensor is short HEAT LED blinking Defrost mode SLM3 only Applicable for Ceiling Cassette Model only SLM 3 and SLM 9 only display Error Code E1 to E6...

Страница 64: ...oor room thermistor short open L3 Outdoor control box overheat E1 Outdoor PCB error L4 Heat sink overheat E3 High pressure protection L5 IPM error IGBT error E4 Low pressure protection L8 Electrical t...

Страница 65: ...or 2 high pressure trip contact open E25 Outdoor coil sensor 2 short E08 Compressor 3 high pressure trip contact open E26 Outdoor coil sensor 3 short E09 Compressor 4 high pressure trip contact open E...

Страница 66: ...economizer communication fail Communication wires not connected Connect correctly and operate again External noise interference Avoid from noise source add ferrite core Main PCB Economizer PCB faulty...

Страница 67: ...hort body Main PCB faulty Replace main PCB 13 Return air sensor short open Faulty Sensor Poor sensor connection Connect sensor correctly replace sensor 14 Outdoor air sensor short open Faulty Sensor P...

Страница 68: ...lfunctioning occurred the display LCD will blink The display will show the faulty parameter and the date and time of the occurrence When a malfunction of the unit is detected immediately switch off th...

Страница 69: ...t Last State Memory A Wireless Handset G17 1 Remove battery from remote controller 2 Replace battery again into remote controller 3 Press Mode ON OFF buttons together 4 Press Mode button to 5 00 5 Pre...

Страница 70: ...display section 3 A short beep or two consecutive beeps indicate non corresponding error codes 4 To cancel the error code display hold down ON TIMER CANCEL button or OFF TIMER CANCEL button for 5 sec...

Страница 71: ...r discharge pipe thermistor short open misplaced A3 Water pump error J5 Suction pipe thermistor short open A5 Antifreeze J6 Outdoor heat exchanger A6 Indoor fan motor abnormal J7 Subcooling heat excha...

Страница 72: ...essed for 1 minute Error Codes Error Code Description SYSTEM 00 Normal UA Indoor Outdoor combination fault U0 Refrigerant Shortage U2 Drop voltage or main circuit overvoltage U4 Failure of transmissio...

Страница 73: ...en TH2 inlet coil 1 4 E3 Sensor Broken TH3 mid coil 1 5 E4 Sensor Broken TH4 inlet coil 2 6 E5 Sensor Broken TH5 mid coil 2 7 E6 Sensor Broken TH6 inlet coil 3 8 E7 Sensor Broken TH7 mid coil 3 9 E8 S...

Страница 74: ...alfunction 40 11 Sensor broken slave TH1 discharge temp 41 12 Sensor broken slave TH2 inlet coil 1 42 13 Sensor Broken slave TH3 mid coil 1 43 14 Sensor broken slave TH4 inlet coil 2 44 15 Sensor brok...

Страница 75: ...unit communication 62 ER62 Refrigerant released 1 EC01 01 indoor unit communication failure 63 ER63 Slaver outdoor unit communication failure 2 47 02 47 indoor unit communication failure 64 ER64 TH1 t...

Страница 76: ...or does not work Check if the thermostat setting too high Reset thermostat Check the compressor capacitor Check and replace the capacitor Check the compressor Check and replace the compressor Check th...

Страница 77: ...or compression no compression compressor defective 2 Check valve stick in open position 3 Reversing valve leaking for heatpump only High Side Low Side 1 Undercharged with refrigerant 2 Refrigerant lea...

Страница 78: ...15E 00 3 22E 00 10 1 80E 01 1 83E 01 1 86E 01 60 2 89E 00 2 96E 00 3 01E 00 12 1 66E 01 1 69E 01 1 71E 01 62 2 71E 00 2 78E 00 2 84E 00 14 1 53E 01 1 55E 01 1 57E 01 64 2 55E 00 2 61E 00 2 67E 00 16...

Страница 79: ...92 61 33 14 18 13 88 73 3 16 3 11 6 90 71 87 79 34 13 59 13 31 74 3 06 3 01 5 85 49 83 25 35 13 04 12 77 75 2 96 2 91 4 81 08 78 97 36 12 51 12 25 76 2 86 2 82 3 76 93 74 94 37 12 01 11 76 77 2 77 2 7...

Страница 80: ...7 12 432 9 60 52 8 108 10 2 158 2 6 14 392 0 62 48 9 110 9 6 160 2 5 16 355 3 64 45 3 112 9 0 162 2 3 18 322 4 66 42 0 114 8 5 164 2 2 20 292 9 68 39 0 116 8 0 166 2 1 22 266 3 70 36 3 120 7 1 168 2...

Страница 81: ...d MDS B 8HP and Above R22 R410A Outdoor PCB Indoor PCB 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 1A 2 2A 2 3A 2 4A 2 5A 2 6A 2 8A mc201_2 0 mc201_2 1 mc201_2 2 mc201_2 3 mc201_2 4 mc201_2 5 mc201_2 6 mc201_2...

Страница 82: ...1 1 28HP 1 0 0 0 32HP 1 0 0 1 MDS B PCB version 2 4 and above Dip Switch S2 3 S3 1 S3 2 S3 3 S3 4 8HP 0 0 0 0 0 10HP 0 0 0 0 1 12HP 0 0 0 1 0 15HP 0 0 0 1 1 14HP 1 0 1 0 1 16HP 1 0 1 1 0 18HP 0 0 1 0...

Страница 83: ...7m 10m 15m 20m 2 Netware 3 UL2547 AWG26 10m 15m 20m 3 Netware 3C UL2547 AWG26 10m 15m 20m 4 SQ LCD UL2547 AWG26 Not Provided Not Provided 100m 5 Chiller Panel UL2547 AWG26 2m Not Provided 960m 6 RT Pa...

Страница 84: ...2012 McQuay International www mcquayup com...

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