Classic Air Conditioners MWNC09S Service Manual

Text of Classic Air Conditioners MWNC09S User Guide:

• Classic Air Conditioners MWNC09S, 2 There is risk of electric shock or fire.  Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives. There is risk of property damage, failure of product, or electric shock.  Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) There is risk of physical injury, electric shock, or product failure.  When the product is soaked, contact an authorized service center. There is risk of fire or electric shock.  Be caution that water could not enter the product. There is risk of

• Classic Air Conditioners MWNC09S, 59 A ppendix 2 Temperature Sensor Resistance Value Table for T5 (℃--K) ℃ ℉ K Ohm ℃ ℉ K Ohm ℃ ℉ K Ohm ℃ ℉ K Ohm -20 -4 542.7 20 68 68.66 60 140 13.59 100 212 3.702 -19 -2 511.9 21 70 65.62 61 142 13.11 101 214 3.595 -18 0 483 22 72 62.73 62 144 12.65 102 216 3.492 -17 1 455.9 23 73 59.98 63 145 12.21 103 217 3.392 -16 3 430.5 24 75 57.37 64 147 11.79 104 219 3.296 -15 5 406.7 25 77 54.89 65 149 11.38 105 221 3.203 -14 7 384.3 26 79 52.53 66 151 10.99 106 223 3.113 -13 9

• Classic Air Conditioners MWNC09S, 31 F1~F8: The detailed value of the compressor operation frequency. If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp. During the 7 minutes, the frequency limitation is active. 7 minutes later, the compressor running frequency will be controlled as below: +5.0 +4.5 +3.5 +3.0 +2.5 +2.0 +1.5 +1.0 H G H F E D C B A +0.5 While the zones of A,B,C... are corresponding to different compressor running frequency. ΔT=0℃ as defa

• Classic Air Conditioners MWNC09S, 61 2.Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value DA108X1C-23EZ DA108X1C-20FZ3 DA130M1C-31FZ DA150S1C-20FZ Blue - Red 1.1Ω (20℃/68℉) 0.71Ω (20℃/68℉) 1.77Ω (20℃/68℉) 0.95Ω (20℃/68℉) Blue - Black Red - Blue

• Classic Air Conditioners MWNC09S, 45 10.4.3 Zero crossing detection error diagnosis and solution(E2) Error Code E2 Malfunction decision conditions When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Supposed causes ● Connection mistake ● PCB faulty Trouble shooting:

• 41 No. Problems LED4 (Green) LED3 (Red) IU display 1 standby for normal O X 2 Operation normally X O 3 IPM malfunction or IGBT over-strong current protection ☆ X P0 4 Over voltage or too low voltage protection O O P1 5 Over voltage or too low voltage protection O ☆ P1 6 Inverter compressor drive error X ☆ P4 7 Inverter com

• Classic Air Conditioners MWNC09S, 39  MWHNC09SA/MRHNC09ASA, MWHNC12SA/MRHNC12ASA:  There’s a LED light on the outdoor PCB which is blue color. After power on, it will be slow flash(0.2Hz) when the unit is in standby and quick flash (2.5Hz) if the unit has some problems.

• Classic Air Conditioners MWNC09S, 63 5: Pressure On Service Port Cooling chart: ℉(℃) ODT IDT 75 （23.89） 85 （29.44） 95 （35） 105 （40.56） 115 （46.11） BAR 70/59 8.2 7.8 8.1 8.6 10.1 BAR 75/63 8.6 8.3 8.7 9.1 10.7 BAR 80/67 9.3 8.9 9.1 9.6 11.2 ℉(℃) ODT IDT 75 （23.89） 85 （29.44） 95 （35） 105 （40.56） 115 （46.11） PSI 70/59 119 113 117 125 147 PSI 75/63 124 120 126 132 155 PSI 80/67 135 129 132 140 162 ℉(℃) ODT

• Classic Air Conditioners MWNC09S, 28 9.3 Main Protection 9.3.1 Three minutes delay at restart for compressor 1 minute delay for the 1 st time stand-up and 3 minutes delay for others. 9.3.2 Temperature protection of compressor top The unit will stop working when the compressor top temp. protector cut off, and will restart after the compressor top temp. protector restart. 9.3.3 Temperature protection of compressor discharge When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules: ---Compressor discharge temp. T5>115℃ for 5s, compressor stops. ---108<T5<115℃, decrease the frequency to the lower level every 3 minu

• Classic Air Conditioners MWNC09S, 32 9.4.3.3 Indoor fan running rules If the compressor stops caused by the room temperature rising, the indoor fan will be forced to run 127 seconds with breeze. During this period, the anti-cold-wind is disabled. If the machine runs in rating capacity test mode, the indoor fan will run with rating speed and the anti-cold-wind function is disabled. Auto fan action in heating mode: 2.5 2 High Low 1 Medium 1.5 9.4.3.4 Defrosting mode Condition of defrosting: ----T4＞0℃, When the units are running, if the following two items are satisfied, the

• Classic Air Conditioners MWNC09S, 56 10.4.10 Inverter compressor drive error diagnosis and solution(P4) Error Code P4 Malfunction decision conditions An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on. Supposed causes Wiring mistake; IPM malfunction; Outdoor fan ass’y faulty Compressor malfunction; Outdoor PCB faulty Trouble shooting: Remark ： 1) MWHNC09S m

• 10 More than 60cm(23.6in) More than 70cm(27.6in) More than 30cm(11.8in) More than 60cm(23.6in) (Service space F e n c e o r o b s t a c l e s More than 30cm(11.8in) Note: The above drawing is only for reference. The appearance of your units may be different. Model W H D W1 A B MWHNC09S/MRHNC09AS 700 (27.6in) 240 (9.4in) 540 (21.3in) 757 (29.8in) 458 (18.0i

• Classic Air Conditioners MWNC09S, 34 2.0 1.5 1.0 F3 F2 F1 F1 2.5 0.5 0.0 9.4.5.3 Low indoor room temperature protection In drying mode, if room temperature is lower than 10℃, the compressor will stop and not resume until room temperature exceeds 12℃. 9.4.5.4 Evaporator anti-freezing protection, condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode. 9.4.5.5 The outdoor fan operates the same as in cooling mode. 9.4.6 Forced operation function 9.4.6.1 Enter forced operation function: When the machine is off, pressing the touch button will carry the machine to

• Classic Air Conditioners MWNC09S, 42 10.3 Diagnosis and Solution 10.3.1 EEPROM parameter error diagnosis and solution(E0/F4) Error Code E0/F4 Malfunction decision conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Supposed causes ● Installation mistake ● PCB faulty Trouble shooting: If the EEPROM chip is welded on main PCB, replace the main PCB directly. Otherwise, check whether the EEPROM chip plugged in main PCB well? Yes No Yes Correct the connection . Replace the main PCB . Shut off th

• Classic Air Conditioners MWNC09S, 43 10.3.2 Indoor / outdoor unit’s communication 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 ● Wiring mistake ● Indoor or outdoor PCB faulty Trouble shooting: Yes Yes Measure Vs, is it moving alternately with positive value? (Vs is the voltage between L2 and S of outdoor unit. Connect the red pin of multimeter with L2 port, black pin with S port) Yes Pow

• Classic Air Conditioners MWNC09S, 44 Remark: Use a multimeter to test the DC voltage between L2 port and S port of outdoor unit. The red pin of multimeter connects with L2 port while the black pin is for S port. When AC is normal running, the voltage will move alternately between -50V to 50V. If the outdoor unit has malfunction, the voltage will move alternately with positive value. While if the indoor unit has malfunction, the voltage will be a certain value. Remark: Use a multimeter to test the resistance of the reactor which does not connect with capacitor. The nor

• 24 slightly to purge air from the charge hose for 5 seconds and then close it quickly. 4). Set the 2-way valve to the close position. 5). Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0.1Mpa(14.5Psi). 6). Set the 3-way valve to the closed position immediately Do this quickly so that the gauge ends up indicating 0.3Mpa(43.5Psi) to 0.5 Mpa(72

• Classic Air Conditioners MWNC09S, 13 For heat pump models: INDOO R OUTDOO R LIQUID SIDE GAS SIDE HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER) COMPRESSOR 2-WAY VALVE 3-WAY VALVE CHECK VALVE (Heating Model only) CAPILIARY TUBE REVERSING VALVE (Heating Model only) COOLING HEATING ACCUMULATOR

• 50 10.4.6 Refrigerant Leakage Detection diagnosis and solution(EC) Error Code EC Malfunction decision conditions Define the evaporator coil temp.T2 of the compressor just starts running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 ＜Tcool－2℃ does not keep continuous 4 seconds and this situation happens 3 times, the display area

• Classic Air Conditioners MWNC09S, 60 Appendix 3: ℃ 10 11 12 13 14 15 16 17 18 19 20 21 22 ℉ 48 50 52 54 56 58 60 62 64 66 68 70 72 ℃ 23 24 25 26 27 28 29 30 31 32 33 34 35 ℉ 74 76 78 80 82 84 86 88 90 92 94 96 98

• 46 10.4.4 Fan speed has been out of control diagnosis and solution(E3) Error Code E3 Malfunction decision conditions When indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will display the failure. Supposed causes ● Wiring mistake ● Fan ass’y faulty ● Fan motor faulty ● PCB faulty Trouble shooting:

• Classic Air Conditioners MWNC09S, 1 1. Precaution 1.1 Safety Precaution  To prevent injury to the user or other people and property damage, the following instructions must be followed.  Incorrect operation due to ignoring instruction will cause harm or damage.  Before service the unit, be sure to read this service manual at first. 1.2 Warning  Installation  Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. There is risk of fire or electric shock.  For electrical work, contact the dealer, seller, a qualified electricia

• 9 L R H Model R(mm) L(mm) H(mm) Dimension of installation hole(mm) MWHNC09S 92mm (3.6in) 170 (6.7in) 45 (1.8in) Φ65mm(2.56in) MWNC09S MWHNC12S 95mm (3.7in) 170mm (6.7in) 45mm (1.8in) MWNC12S MWHNC18S 80mm (3.1in) 100mm (3.9in) 45mm (1.8in) MWNC18S Model R(mm) L(mm) H(mm) Dimension of installation hole(mm) MWHNC24S 163mm (6.4

• Classic Air Conditioners MWNC09S, 3  Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.  Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries. There is risk of fire or explosion.  Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire. They may burn of explode.  If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not us

• Classic Air Conditioners MWNC09S, 64 Heating Chart: ℉ (℃) ODT IDT 57/53 (13.89/11.67) 47/43 (8.33/6.11) 37/33 (2.78/0.56) 27/23 (-2.78/-5) 17/13 (-8.33/-10.56) BAR 55 30.3 28.5 25.3 22.8 20.8 BAR 65 32.5 30.0 26.6 25.4 23.3 BAR 75 33.8 31.5 27.8 26.3 24.9 ℉ (℃) ODT IDT 57/53 (13.89/11.67) 47/43 (8.33/6.11) 37/33 (2.78/0.56) 27/23 (-2.78/-5) 17/13 (-8.33/-10.56) PSI 55 439 413 367 330 302 PSI 65 471 435 386 368 339 PSI 75 489 457 403 381 362 ℉ (℃) ODT IDT 57/53 (13.89/11.67) 47/43 (8.33/6.11) 3

• Classic Air Conditioners MWNC09S, 58 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (℃--K) ℃ ℉ K Ohm ℃ ℉ K Ohm ℃ ℉ K Ohm ℃ ℉ K Ohm -20 -4 115.266 20 68 12.6431 60 140 2.35774 100 212 0.62973 -19 -2 108.146 21 70 12.0561 61 142 2.27249 101 214 0.61148 -18 0 101.517 22 72 11.5 62 144 2.19073 102 216 0.59386 -17 1 96.3423 23 73 10.9731 63 145 2.11241 103 217 0.57683 -16 3 89.5865 24 75 10.4736 64 147 2.03732 104 219 0.56038 -15 5 84.219 25 77 10 65 149 1.96532 105 221 0.54448 -14 7 79.311 26 79 9.55074 66 151 1.89627 106 223 0.52912 -13 9 74.536 27 81 9.12445 67 153 1.8300

Related Products and Documents (Air Conditioner):

Comparable Devices:

Similar Resources:

• Zibro SC 1326 (2 pages) SC 1326Product rangeBrand nameModelColourEAN code indoor unitEAN code outdoor unitCooling HeatingEER / COP * W/W 3.22 3.63EE-Class / Heating performance * A ACapacity * (nom.) kW 2.6 2.8Power consumption (nom.) kW 0.81 0.77Power supply V/Hz/PhCurrent ** AAir flow (min-max.) **m3/hFor rooms up to **m3Dehumidification capacity *** L/24 hOperating range °CThe …

• Toshiba RAV-SM563UT-E (195 pages) R410AFILE NO. A06-010Revised : Mar. 2007SERVICE MANUAL/INTEGRATIONAIR-CONDITIONERSPLIT TYPEINDOOR UNIT<DIGITAL INVERTER>RAV-SM563UT-E RAV-SM562BT-E RAV-SM562CT-ERAV-SM803UT-E RAV-SM802BT-E RAV-SM802CT-ERAV-SM1103UT-E RAV-SM1102BT-E RAV-SM1102CT-ERAV-SM1403UT-E RAV-SM1402BT-E RAV-SM1402CT-E<SUPER DIGITAL INVERTER>RAV-SP1102UT-EOUTDOOR UNIT< …

• Bitzer BDC 152 (2F) (V) (10 pages) OPERATING INSTRUCTIONSBITZER AUSTRALIA BUFFALO TRIDENT HEAT EXCHANGEBDC Series Air Cooled CondensersModels: BDC 152 (2F) (V) BDC 152 (2F) (H) BDC 456 (6F) BDC 228 (3F) (V) BDC 228 (3F) (H) BDC 608 (8F) BDC 304 (4F) (V) BDC 304 (4F) (H) BDC 760 (10F) BDC 380 (5F) (V) BDC 380 (5F) (H)1. Important Recommendations• BDC air cooled …

• Payne PA3A (8 pages) Installation InstructionsPA3A, PA4AR--410A SPLIT--SYSTEMAIR CONDITIONER1--1/2 -- 5 TONS (018--060)SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service, maintenance,or use can cause explosion, fire, electrical shock, or otherconditions which may cause death, personal injury, or propertydamage. Consult a qualified installer, service agen …

• Toshiba RAS-107SKV Series (4 pages) OWNER’S MANUALENGLISHESPAÑOLFRANÇAISITALIANODEUTSCHPORTUGUÊSPOLSKIČESKYHRVATSKIMAGYARNEDERLANDSΕΛΛΗΝΙΚΑSVENSKASUOMINORSKDANSKROMÂNĂБЪЛГАРСКИEESTILATVISKISLOVENČINASLOVENŠČINAAIR CONDITIONER (SPLIT TYPE)For general public useIndoor unitRAS-107, 137, 167SKV SeriesOutdoor unitRAS-107, 137, 167SAV Series1110250170 …

• Friedrich WALLMASTER R410A (7 pages) Cool Only UnitsCool with ElectricHeat UnitsHeat Pump with Electric Heat Backup72MoneyFanTimer OperationSet Hr.StopStartTemperatureFanCoolOn/OffPowerCooler OnlySpeedSaver®Warmer115-Volt: WS08C10-A, WS10C10-A, WS12C10-A230-Volt: WS10C30-A, WS13C30-A, WS15C30-A115-Volt: WE10C33-A, WE13C33-A, WE15C33-A230-Volt: WY09C33-A, WY12C33-AWallMaster® Thru-the-Wall Air …

Comments, Questions and Opinions: