Sanyo STW-2 Series Technical & Service Manual Download Page 43

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Heat pump models (265 V)

SELECTOR
SWITCH

SELECTOR

THERMO
SET

THERMO

CLASS 2

TRANS

1 1
2 2

3 3

1 1
3 3

4 4

BLK

GRY

FMO

1 1
3 3

FMI

WHT

FMO

BRN

PNK(RED)

RED

JUMPER

BLK
BLK

(RTH)

(IDC)

BLK

5 5
6 6

BLK

(ODC)

BLK

HEATER ASS'Y

CAPACITOR (FMO)

OUTDOOR
FAN MOTOR

1 1
3 3
5

GRY

WHT

YEL

RED

BLK

WHT

FMI

BRN

PNK(RED)

CAPACITOR (FMI)

CAPACITOR (CM)

COMP OVERLOAD

COMPRESSOR

INDOOR
FAN MOTOR

FUSE

HEATER

THERMAL LIMIT.

GRY

BLU

TERMINAL BASE

POWER
SUPPLY

PTHP (265 V) 8512-5253-72300

(TEMP. SETTING)

REV. COIL

(4-WAY VALVE)

To avoid electrical shock hazard, be sure to

disconnect power before checking, servicing

and/or cleaning any electrical parts.

WARNING

Summary of Contents for STW-2 Series

Page 1: ... kW STW1233C2 1 851 006 60 4 00 kW STW1234C2 1 851 006 61 5 00 kW STW1235C2 1 851 006 62 15 000 BTU 4 00 kW STW1534C2 1 851 006 63 5 00 kW STW1535C2 1 851 006 64 Capacity Class Model No 6 000 BTU STW0622H2 9 000 BTU STW0922H2 12 000 BTU STW1222H2 HEAT PUMP MODEL 230 208 V Heater 2 55 kW 2 55 kW 2 55 kW Product Code No 1 851 006 65 1 851 006 67 1 851 006 70 STW0623H2 3 45 kW 1 851 006 66 STW0923H2 ...

Page 2: ...space from any outside obstruction wall bush etc As a safety measure it is recommended that two people install the unit Hold the unit securely and be careful not to drop any parts if the air conditioner is being installed on an upper floor of a multistory building When Servicing Turn the power OFF at the main power box mains before opening the unit to check or repair electrical parts and wiring Ke...

Page 3: ...odel number Cooling or heating capacity electrical information and special features included on the air conditioner are indicated in the model number SANYO Package Terminal A C Development Nominal Cooling Capacity Unit Type 06 6 000BTU 12 12 000BTU C Cooling Only W E Heater 09 9 000BTU 15 15 000BTU H Heat Pump W E Heater Voltage Heater size 2 230 208 V Refer to the table below 3 265 V Heater 230 2...

Page 4: ...s not operate 43 7 4 Air conditioner operates but abnormalities are observed 45 7 5 If a sensor is defective 46 8 CHECKING ELECTRICAL COMPONENTS 8 1 Measurement of Insulation Resistance 47 8 2 Checking Motor Capacitor 48 8 3 Checking Fan Motor Winding 48 8 4 Checking Compressor Motor Winding 48 8 5 Checking Thermistor 48 9 DISASSEMBLY PROCEDURE 9 1 Removing Front Grille 49 9 2 Removing Wall Sleeve...

Page 5: ...F D B Heating Maximum 80 F D B 67 F W B Minimum D B W B HEAT PUMP MODEL Model STW H2 Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 95 F D B 71 F W B 115 F D B Minimum 67 F D B 57 F W B 67 F D B Heating Maximum 80 F D B 67 F W B 75 F D B 65 F W B Minimum D B W B 17 F D B 15 F W B COOLING ELECTRIC HEATING MODEL Models STW C2 ...

Page 6: ...l unit Timer Fan speeds 2 Airflow direction Indoor Horizontal Manual Vertical Air filter Washable Air exhaust Yes Compressor Rotary Hermetic R22 Amount charged at shipment OZ 26 8 30 0 32 1 33 5 Refrigerant control Capillary Tube Operation sound Indoor Hi Lo dB A 44 42 47 45 Outdoor dB A 60 61 Dimensions Weight Unit dimensions Height In 15 15 16 Refer to page 11 Width In 41 1 8 Depth In 21 1 2 Pac...

Page 7: ...speeds 2 Airflow direction Indoor Horizontal Manual Vertical Air filter Washable Air exhaust Yes Compressor Rotary Hermetic R22 Amount charged at shipment OZ 26 8 30 0 32 1 33 5 Refrigerant control Capillary Tube Operation sound Indoor Hi Lo dB A 44 42 47 42 Outdoor dB A 60 61 Dimensions Weight Unit dimensions Height In 15 15 16 Refer to page 11 Width In 41 1 8 Depth In 21 1 2 Package dimensions H...

Page 8: ...2 3 2 3 1 3 1 2 9 2 9 Features Controls Temperature control Mechanical Themostat Control unit Timer Fan speeds 2 Airflow direction Indoor Horizontal Manual Vertical Air filter Washable Air exhaust Yes Compressor Rotary Hermetic R22 Amount charged at shipment OZ 26 8 30 0 32 1 33 5 Refrigerant control Capillary Tube Operation sound Indoor Hi Lo dB A 44 42 47 45 Outdoor dB A 60 61 Dimensions Weight ...

Page 9: ...ature control Mechanical Themostat Control unit Timer Fan speeds 2 Airflow direction Indoor Horizontal Manual Vertical Air filter Washable Air exhaust Yes Compressor Rotary Hermetic R22 Amount charged at shipment OZ 26 8 30 0 32 1 33 5 Refrigerant control Capillary Tube Operation sound Indoor Hi Lo dB A 44 42 47 45 Outdoor dB A 60 61 Dimensions Weight Unit dimensions Height In 15 15 16 Refer to pa...

Page 10: ... at 15A Trip in 6 to 16 sec at 16 5A Trip in 6 to 16 sec at 20A Trip in 6 to 16 sec at 26 5A Run capacitor 17 5MF 400VAC 25MF 400VAC 25MF 400VAC 25MF 400VAC Fan Fan Motor Fan type Indoor Dia Length In Cross flow Dia 3 15 16 Length 26 13 16 Outdoor Dia Depth In Propeller Dia 13 15 16 Depth 3 15 16 Fan motor model Indoor Outdoor UF4S 11A6P S UE6 41C6P S UF4S 21C6P S UE6 51B6P S Source 230 208 V 1 ph...

Page 11: ...ip in 6 to 16 sec at 15A Trip in 6 to 16 sec at 16 5A Trip in 6 to 16 sec at 24A Run capacitor 17 5MF 400VAC 25MF 400VAC 25MF 400VAC 25MF 400VAC Fan Fan Motor Fan type Indoor Dia Length In Cross flow Dia 3 15 16 Length 26 13 16 Outdoor Dia Depth In Propeller Dia 13 15 16 Depth 3 15 16 Fan motor model Indoor Outdoor UF4S 11A7P S UE6 41C7P S UF4S 21C7P S UE6 41C6P S Source 265 V 1 phase 60Hz Rpm Hig...

Page 12: ...ec at 16 5A Trip in 6 to 16 sec at 20A Trip in 6 to 16 sec at 26 5A Run capacitor 17 5MF 400VAC 25MF 400VAC 25MF 400VAC 25MF 400VAC Fan Fan Motor Fan type Indoor Dia Length In Cross flow Dia 3 15 16 Length 26 13 16 Outdoor Dia Depth In Propeller Dia 13 15 16 Depth 3 15 16 Fan motor model Indoor Outdoor UF4S 11A6P S UE6 41C6P S UF4S 21C6P S UE6 51B6P S Source 230 208 V 1 phase 60Hz Rpm High 230V In...

Page 13: ...to 16 sec at 15A Trip in 6 to 16 sec at 16 5A Trip in 6 to 16 sec at 24A Run capacitor 17 5MF 400VAC 25MF 400VAC 25MF 400VAC 25MF 400VAC Fan Fan Motor Fan type Indoor Dia Length In Cross flow Dia 3 15 16 Length 26 13 16 Outdoor Dia Depth In Propeller Dia 13 15 16 Depth 3 15 16 Fan motor model Indoor Outdoor UF4S 11A7P S UE6 41C7P S UF4S 21C7P S UE6 41C6P S Source 265 V 1 phase 60Hz Rpm High Indoor...

Page 14: ...STW0933H2 STW0934C2 STW0934H2 STW0935C2 STW0935H2 STW1233C2 STW1233H2 STW1234C2 STW1234H2 STW1235C2 STW1235H2 STW1534C2 STW1534H2 STW1535C2 STW1535H2 Heater element Rating 265 V 3 00kw 11 4A 4 00kW 15 2A 5 00kW 19 0A Resistance Ω 21 28 5 at 68 F 15 96 5 at 68 F 25 54 5 at 68 F Watt density w in2 39 4 40 6 27 4 Wire diameter In Dia 0 040 Dia 0 048 Dia 0 040 Straight length of wire Ft Length 51 8 Le...

Page 15: ...W H2 Wall Sleeve Dimensions Dimensions of Wall Opening Unit Dimensions Minimum wall sleeve opening Wall opening of 42 1 4 x 16 1 4 is required 41 1 8 15 15 16 7 1 2 21 1 2 Top view Front view Side view 421 4 161 4 13 3 4 42 16 Unit inch Unit inch ...

Page 16: ... valve Accumulator Outdoor heat exchanger Indoor heat exchanger Cooling cycle Heating cycle Capillary tube Heat Pump Models Models STW H2 Compressor Accumulator Condenser Evaporator Capillary tube Cooling Electric Heating Models Models STW C2 12 ...

Page 17: ...0 6 770 6 370 5 930 TC 7 750 7 440 7 100 6 720 6 310 CI 0 42 0 46 0 5 0 57 0 63 72 22 2 SHC 3 880 3 760 3 630 3 490 3 340 67 76 24 4 SHC 4 900 4 780 4 660 4 520 4 370 19 4 80 26 7 SHC 5 970 5 850 5 730 5 590 5 440 84 28 9 SHC 6 990 6 880 6 750 6 610 6 310 88 31 1 SHC 7 750 7 440 7 100 6 720 6 310 TC 8 160 7 870 7 570 7 230 6 870 CI 0 42 0 46 0 51 0 57 0 64 72 22 2 SHC 2 690 2 590 2 490 2 370 2 250...

Page 18: ...00 TC 9 930 9 540 9 100 8 620 8 090 CI 0 56 0 61 0 67 0 77 0 87 72 22 2 SHC 4 730 4 580 4 400 4 210 4 010 67 76 24 4 SHC 5 760 5 600 5 420 5 240 5 030 19 4 80 26 7 SHC 6 830 6 670 6 490 6 310 6 100 84 28 9 SHC 7 850 7 690 7 520 7 330 7 120 88 31 1 SHC 8 870 8 720 8 540 8 350 8 090 TC 10 460 10 090 9 700 9 270 8 800 CI 0 57 0 62 0 68 0 78 0 88 72 22 2 SHC 3 510 3 380 3 240 3 080 2 910 71 76 24 4 SH...

Page 19: ...0 760 10 020 TC 13 090 12 580 12 000 11 360 10 670 CI 0 79 0 87 0 95 1 1 1 24 72 22 2 SHC 6 170 5 960 5 720 5 470 5 200 67 76 24 4 SHC 7 440 7 230 7 000 6 740 6 470 19 4 80 26 7 SHC 8 770 8 560 8 320 8 070 7 800 84 28 9 SHC 10 040 9 830 9 590 9 340 9 070 88 31 1 SHC 11 310 11 100 10 860 10 610 10 340 TC 13 790 13 310 12 790 12 230 11 600 CI 0 8 0 88 0 96 1 11 1 26 72 22 2 SHC 4 640 4 460 4 270 4 0...

Page 20: ...2 740 11 860 TC 15 490 14 880 14 200 13 450 12 620 CI 1 1 1 21 1 32 1 52 1 72 72 22 2 SHC 7 190 6 930 6 630 6 320 5 980 67 76 24 4 SHC 8 460 8 200 7 910 7 590 7 250 19 4 80 26 7 SHC 9 790 9 530 9 230 8 920 8 580 84 28 9 SHC 11 060 10 800 10 500 10 190 9 850 88 31 1 SHC 12 330 12 070 11 770 11 460 11 120 TC 16 320 15 750 15 140 14 470 13 730 CI 1 11 1 22 1 34 1 54 1 75 72 22 2 SHC 5 620 5 400 5 160...

Page 21: ...TC 7 750 7 440 7 100 6 720 6 310 CI 0 42 0 46 0 5 0 57 0 63 72 22 2 SHC 3 880 3 760 3 630 3 490 3 340 67 76 24 4 SHC 4 900 4 780 4 660 4 520 4 370 19 4 80 26 7 SHC 5 970 5 850 5 730 5 590 5 440 84 28 9 SHC 6 990 6 880 6 750 6 610 6 310 88 31 1 SHC 7 750 7 440 7 100 6 720 6 310 TC 8 160 7 870 7 570 7 230 6 870 CI 0 42 0 46 0 51 0 57 0 64 72 22 2 SHC 2 690 2 590 2 490 2 370 2 250 71 76 24 4 SHC 3 72...

Page 22: ...C 9 930 9 540 9 100 8 620 8 090 CI 0 58 0 63 0 69 0 78 0 87 72 22 2 SHC 4 730 4 580 4 400 4 210 4 010 67 76 24 4 SHC 5 760 5 600 5 420 5 240 5 030 19 4 80 26 7 SHC 6 830 6 670 6 490 6 310 6 100 84 28 9 SHC 7 850 7 690 7 520 7 330 7 120 88 31 1 SHC 8 870 8 720 8 540 8 350 8 090 TC 10 460 10 090 9 700 9 270 8 800 CI 0 58 0 64 0 7 0 79 0 88 72 22 2 SHC 3 510 3 380 3 240 3 080 2 910 71 76 24 4 SHC 4 5...

Page 23: ...10 760 10 020 TC 13 090 12 580 12 000 11 360 10 670 CI 0 8 0 88 0 96 1 1 1 24 72 22 2 SHC 6 170 5 960 5 720 5 470 5 200 67 76 24 4 SHC 7 440 7 230 7 000 6 740 6 470 19 4 80 26 7 SHC 8 770 8 560 8 320 8 070 7 800 84 28 9 SHC 10 040 9 830 9 590 9 340 9 070 88 31 1 SHC 11 310 11 100 10 860 10 610 10 340 TC 13 790 13 310 12 790 12 230 11 600 CI 0 81 0 89 0 97 1 12 1 26 72 22 2 SHC 4 640 4 460 4 270 4 ...

Page 24: ... 11 860 TC 15 490 14 880 14 200 13 450 12 620 CI 1 13 1 24 1 35 1 54 1 72 72 22 2 SHC 7 190 6 930 6 630 6 320 5 980 67 76 24 4 SHC 8 460 8 200 7 910 7 590 7 250 19 4 80 26 7 SHC 9 790 9 530 9 230 8 920 8 580 84 28 9 SHC 11 060 10 800 10 500 10 190 9 850 88 31 1 SHC 12 330 12 070 11 770 11 460 11 120 TC 16 320 15 750 15 140 14 470 13 730 CI 1 14 1 25 1 37 1 56 1 75 72 22 2 SHC 5 620 5 400 5 160 4 9...

Page 25: ... 7 440 7 100 6 720 6 310 CI 0 42 0 46 0 5 0 57 0 63 72 22 2 SHC 3 880 3 760 3 630 3 490 3 340 67 76 24 4 SHC 4 900 4 780 4 660 4 520 4 370 19 4 80 26 7 SHC 5 970 5 850 5 730 5 590 5 440 84 28 9 SHC 6 990 6 880 6 750 6 610 6 310 88 31 1 SHC 7 750 7 440 7 100 6 720 6 310 TC 8 160 7 870 7 570 7 230 6 870 CI 0 42 0 46 0 51 0 57 0 64 72 22 2 SHC 2 690 2 590 2 490 2 370 2 250 71 76 24 4 SHC 3 720 3 620 ...

Page 26: ...820 9 430 9 000 8 520 8 000 CI 0 57 0 62 0 68 0 77 0 85 72 22 2 SHC 4 690 4 530 4 360 4 170 3 970 67 76 24 4 SHC 5 710 5 560 5 380 5 200 5 000 19 4 80 26 7 SHC 6 780 6 630 6 450 6 270 6 070 84 28 9 SHC 7 810 7 650 7 480 7 290 7 090 88 31 1 SHC 8 830 8 670 8 500 8 310 8 000 TC 10 340 9 980 9 590 9 170 8 700 CI 0 57 0 63 0 69 0 78 0 86 72 22 2 SHC 3 470 3 340 3 200 3 050 2 880 71 76 24 4 SHC 4 490 4...

Page 27: ...0 020 TC 13 090 12 580 12 000 11 360 10 670 CI 0 8 0 88 0 96 1 1 1 24 72 22 2 SHC 6 170 5 960 5 720 5 470 5 200 67 76 24 4 SHC 7 440 7 230 7 000 6 740 6 470 19 4 80 26 7 SHC 8 770 8 560 8 320 8 070 7 800 84 28 9 SHC 10 040 9 830 9 590 9 340 9 070 88 31 1 SHC 11 310 11 100 10 860 10 610 10 340 TC 13 790 13 310 12 790 12 230 11 600 CI 0 81 0 89 0 97 1 12 1 26 72 22 2 SHC 4 640 4 460 4 270 4 070 3 84...

Page 28: ... 690 TC 15 270 14 670 14 000 13 260 12 450 CI 1 13 1 24 1 35 1 54 1 72 72 22 2 SHC 7 100 6 840 6 550 6 240 5 910 67 76 24 4 SHC 8 370 8 110 7 820 7 510 7 180 19 4 80 26 7 SHC 9 690 9 430 9 150 8 840 8 510 84 28 9 SHC 10 970 10 710 10 420 10 110 9 780 88 31 1 SHC 12 240 11 980 11 690 11 380 11 050 TC 16 090 15 530 14 920 14 270 13 540 CI 1 14 1 25 1 37 1 56 1 75 72 22 2 SHC 5 530 5 310 5 070 4 820 ...

Page 29: ... 7 440 7 100 6 720 6 310 CI 0 42 0 46 0 5 0 57 0 63 72 22 2 SHC 3 880 3 760 3 630 3 490 3 340 67 76 24 4 SHC 4 900 4 780 4 660 4 520 4 370 19 4 80 26 7 SHC 5 970 5 850 5 730 5 590 5 440 84 28 9 SHC 6 990 6 880 6 750 6 610 6 310 88 31 1 SHC 7 750 7 440 7 100 6 720 6 310 TC 8 160 7 870 7 570 7 230 6 870 CI 0 42 0 46 0 51 0 57 0 64 72 22 2 SHC 2 690 2 590 2 490 2 370 2 250 71 76 24 4 SHC 3 720 3 620 ...

Page 30: ...9 430 9 000 8 520 8 000 CI 0 57 0 62 0 68 0 77 0 85 72 22 2 SHC 4 690 4 530 4 360 4 170 3 970 67 76 24 4 SHC 5 710 5 560 5 380 5 200 5 000 19 4 80 26 7 SHC 6 780 6 630 6 450 6 270 6 070 84 28 9 SHC 7 810 7 650 7 480 7 290 7 090 88 31 1 SHC 8 830 8 670 8 500 8 310 8 000 TC 10 340 9 980 9 590 9 170 8 700 CI 0 57 0 63 0 69 0 78 0 86 72 22 2 SHC 3 470 3 340 3 200 3 050 2 880 71 76 24 4 SHC 4 490 4 360...

Page 31: ...0 020 TC 13 090 12 580 12 000 11 360 10 670 CI 0 8 0 88 0 96 1 1 1 24 72 22 2 SHC 6 170 5 960 5 720 5 470 5 200 67 76 24 4 SHC 7 440 7 230 7 000 6 740 6 470 19 4 80 26 7 SHC 8 770 8 560 8 320 8 070 7 800 84 28 9 SHC 10 040 9 830 9 590 9 340 9 070 88 31 1 SHC 11 310 11 100 10 860 10 610 10 340 TC 13 790 13 310 12 790 12 230 11 600 CI 0 81 0 89 0 97 1 12 1 26 72 22 2 SHC 4 640 4 460 4 270 4 070 3 84...

Page 32: ...TC 15 270 14 670 14 000 13 260 12 450 CI 1 13 1 24 1 35 1 54 1 72 72 22 2 SHC 7 100 6 840 6 550 6 240 5 910 67 76 24 4 SHC 8 370 8 110 7 820 7 510 7 180 19 4 80 26 7 SHC 9 690 9 430 9 150 8 840 8 510 84 28 9 SHC 10 970 10 710 10 420 10 110 9 780 88 31 1 SHC 12 240 11 980 11 690 11 380 11 050 TC 16 090 15 530 14 920 14 270 13 540 CI 1 14 1 25 1 37 1 56 1 75 72 22 2 SHC 5 530 5 310 5 070 4 820 4 550...

Page 33: ...3 F 6 1 C W B 2 Above characteristics indicate heat pump heating operation which does not include electric heater operation 3 Because this air conditioner heats a room by drawing in the heat of the outside air heat pump system the heating efficiency will fall off when the outdoor temperature is very low which consequently makes the room temperature decrease At this time heat is provided by the ele...

Page 34: ...er STW1222C2 1223C2 1225C2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 208V 1 phase 60Hz Rating conditions Running amps A 0 17 0 17 0 43 0 43 4 30 4 80 4 9 5 4 Power input kW 0 040 0 035 0 100 0 090 0 960 0 965 1 10 1 09 Full load conditions Running amps A 0 17 0 17 0 43 0 43 5 50 6 20 6 1 6 8 Power input kW 0 040 0 035 0 100 0 090 1 240 1 235 1 38 1 36...

Page 35: ...35C2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 265V 1 phase 60Hz Rating conditions Running amps A 0 15 0 38 3 67 4 2 Power input kW 0 040 0 100 0 960 1 10 Full load conditions Running amps A 0 15 0 38 4 77 5 3 Power input kW 0 040 0 100 1 240 1 38 Model Number STW1534C2 1535C2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performan...

Page 36: ...223H2 1225H2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 208V 1 phase 60Hz Rating conditions Running amps A 0 17 0 17 0 43 0 43 4 30 4 70 4 9 5 3 Power input kW 0 040 0 035 0 100 0 090 0 960 0 955 1 10 1 08 Full load conditions Running amps A 0 17 0 17 0 43 0 43 5 50 6 00 6 1 6 6 Power input kW 0 040 0 035 0 100 0 090 1 240 1 225 1 38 1 35 Model Number ...

Page 37: ...er STW1222H2 1223H2 1225H2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 208V 1 phase 60Hz Rating conditions Running amps A 0 17 0 17 0 43 0 43 3 90 4 30 4 5 4 9 Power input kW 0 040 0 035 0 100 0 090 0 880 0 875 1 02 1 00 Full load conditions Running amps A 0 17 0 17 0 43 0 43 5 00 5 50 5 6 6 1 Power input kW 0 040 0 035 0 100 0 090 1 140 1 135 1 28 1 26...

Page 38: ... 1234H2 1235H2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 265V 1 phase 60Hz Rating conditions Running amps A 0 15 0 38 3 67 4 2 Power input kW 0 040 0 100 0 960 1 10 Full load conditions Running amps A 0 15 0 38 4 77 5 3 Power input kW 0 040 0 100 1 240 1 38 Model Number STW1534H2 1535H2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor...

Page 39: ...er STW1233H2 1234H2 1235H2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 265V 1 phase 60Hz Rating conditions Running amps A 0 15 0 38 3 37 3 9 Power input kW 0 040 0 100 0 880 1 02 Full load conditions Running amps A 0 15 0 38 4 47 5 0 Power input kW 0 040 0 100 1 170 1 31 Model Number STW1534H2 1535H2 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Moto...

Page 40: ... IDC BLK THERMISTOR CONTROLLER HEATER ASS Y CAPACITOR FMO OUTDOOR FAN MOTOR 1 1 3 3 5 4 3 3 4 5 6 5 GRY WHT YEL RED RED BLK WHT FMI CM BRN PNK RED CAPACITOR FMI CAPACITOR CM POWER SUPPLY PTAC 230 208 V 8512 5253 69800 COMP OVERLOAD COMPRESSOR POWER CORD R S C INDOOR FAN MOTOR SENSOR FUSE RH HEATER THERMAL LIMIT GRY BLU BLK WHT To avoid electrical shock hazard be sure to disconnect power before che...

Page 41: ...CAPACITOR FMO OUTDOOR FAN MOTOR 1 1 3 3 5 4 3 3 4 5 6 5 GRY WHT YEL RED RED BLK WHT FMI CM BRN PNK RED CAPACITOR FMI CAPACITOR CM TERMINAL BASE POWER SUPPLY 2 1 PTAC 265 V 8512 5253 72200 COMP OVERLOAD COMPRESSOR R S G C INDOOR FAN MOTOR SENSOR FUSE RH HEATER THERMAL LIMIT GRY BLU BLK WHT BLK WHT TEMP SETTING To avoid electrical shock hazard be sure to disconnect power before checking servicing an...

Page 42: ...CITOR FMO OUTDOOR FAN MOTOR 1 1 3 3 5 4 3 3 4 5 6 5 GRY WHT YEL RED RED BLK WHT FMI CM BRN PNK RED CAPACITOR FMI CAPACITOR CM POWER SUPPLY PTHP 230 208 V 8512 5253 72000 COMP OVERLOAD COMPRESSOR POWER CORD R S C INDOOR FAN MOTOR SENSOR FUSE RH HEATER THERMAL LIMIT GRY BLU BLK WHT RED RED TEMP SETTING REV COIL 4 WAY VALVE G GRN GRN YEL To avoid electrical shock hazard be sure to disconnect power be...

Page 43: ...ITOR FMO OUTDOOR FAN MOTOR 1 1 3 3 5 4 3 3 4 5 6 5 GRY WHT YEL RED RED BLK WHT FMI CM BRN PNK RED CAPACITOR FMI CAPACITOR CM COMP OVERLOAD COMPRESSOR R S C INDOOR FAN MOTOR SENSOR FUSE RH HEATER THERMAL LIMIT GRY BLU BLK WHT BLU BLU TERMINAL BASE POWER SUPPLY 2 1 G BLK WHT PTHP 265 V 8512 5253 72300 TEMP SETTING REV COIL 4 WAY VALVE To avoid electrical shock hazard be sure to disconnect power befo...

Page 44: ... cycle switch Power cord 208 230V model only Outdoor fan motor capacitor FMO Indoor fan motor capacitor FMI Terminal base 265V model only Selector switch Thermo set Terminal base Power cord Fan cycle switch Jumper wire Red For class 2 remote and FDC Left Side View Right Side View 265 V models 230 208 V models To avoid electrical shock hazard be sure to disconnect power before checking servicing an...

Page 45: ...J6 J5 J3 J4 J9 R2 Q8 R22 R95 R46 R5 R51 R3 R4 IC3 C3 C2 D23 ZD1 R49 R50 R23 J11 D16 D8 D15 C4 D12 C19 C7 RY6 RY1 RH RY3 RY7 RY4 RY5 AL01 CN14 VA2 G VA1 3C T1 R101 1 1 3 1 3 1 5 1 3 6 1FA4B1A044400 0 SELECTOR SEC PRY G L1 L1 L2 FMO CM WHT 3 CN12 THERMO SELECTOR THERMO WHT SW STW2 SL 1FA4B1A044500 0 SW STW2 TH 12 11 10 14 13 9 8 7 6 5 4 3 2 1 3 2 1 CL DC FDC AC CN15 RED R37 WHT WHT WHT WHT WHT CN10 ...

Page 46: ...heck that power is being supplied 7 1 2 Check lead wires and connectors Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct WARNING Hazardous voltage can cause ELECTRIC SHOCK or DEATH Disconnect power or turn off circuit breaker before you start checking or servicing ...

Page 47: ...circuit with other parts properly connected and then measure insulation resistance of entire air conditioner again to locate other defective part 2 Replace defective part with new one NOTE Measure insulation resistance of electrical parts Example Compressor Fan motor Capacitor Relay etc NO Set circuit breaker to OFF 1 Pull the power plug out of the wall outlet Measure insulation resistance of unit...

Page 48: ... OFF Set to COOL or HEAT Set to COOL Cooling electric heating models Heat pump models NO Check power supply Power is being supplied to the unit Circuit breaker is tripped Power failure Reset breaker Wait for recovery or contact power company Replace with suitable one larger capacity NO Check capacity of circuit breaker Capacity of circuit breaker is suitable Measure resistance of fan motor winding...

Page 49: ...heck PCB Ass y Controller Check to see if thermal limit in heater assy is opened or closed Fan cannot be turned OK Check fan rotation Turn fan gently once or twice by hand Check fan casing foreign matter on inside Fan motor burnout or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resistance of fan motor winding FMO or FMI Check fan motor capacitor FMO or FMI ...

Page 50: ... the compressor starts operating after about a 3 minute lag Heat pump models Cooling electric heating models CAUTION Check compressor motor capacitor Measure resistance of compressor motor winding NO YES YES Overload relay is working OLR YES Temperature of compressor is abnormally high Refrigerant gas shortage Charge refrigerant gas R22 Rotor may be locked up NO Is room temperature too low Try to ...

Page 51: ...tween suction and discharge air is large enough in cooling operation approx 14 F or more Possibility of gas shortage Measure temperature of suction and discharge air of air conditioner Charge refrigerant gas R22 Check for clogging of air filter Fan speed is set to LOW Clean filter Set fan speed to HIGH Review cooling load estimate if performance of air conditioner is normal Reduce cooling or heati...

Page 52: ...s as the controller tries to detect extremely high room temperature a In Cooling mode The air conditioner continues to operate Thermo ON Compressor does not stop As a result the room becomes too cold b In Heating mode The air conditioner soon stops and will not start again Thermo OFF Heat pump Neither compressor nor electric heater runs Definition of Open or Short Circuit of Sensor Thermistor Open...

Page 53: ...t the lead wires of the desired electric part from terminal plate switch capacitor etc Similarly disconnect the connector Then measure the insulation resistance Figs 2 to 3 Refer to Electric Wiring Diagram If the probe pin cannot enter the connector holes because they are too narrow then use a probe with a thinner pin Fig 2 NOTE Power plug 208 230V model only Ground Probe Insulation tester Fig 1 C...

Page 54: ... a few minutes until it gets cooled down When the resistances between each lead wire are those listed in 2 2 Major Component Specifications the fan motor should be normal Checking the compressor motor winding can be done in a similar manner Remove the terminal cover of the compressor motor setting the resistance measuring range of the multimeter to X1Ω and check the continuity between each of the ...

Page 55: ...leeve Fig 2 9 3 Removing Electrical Junction Box 1 Remove knobs and the control panel from the electrical junction box Fig 3 2 Remove the screws holding the electrical junction box Fig 4a and 4b Fig 3 Knob Control panel Electrical junction box Fig 2 Unit Wall sleeve Fig 1 Front grille Wall sleeve 9 DISASSEMBLY PROCEDURE Fig 4a Electrical junction box Electrical junction box Fig 4b Terminal base Bo...

Page 56: ...tion box Figs 5 and 6 9 4 Removing Electric Heater 1 Remove the 4 screws holding the air outlet frame ass y Fig 7 2 Remove the 2 screws holding the electric heater Fig 8 3 Lift the electric heater up out of the unit Fig 8 Fig 8 Electric heater Fig 7 Air outlet frame ass y Fig 6 Fig 5 Electrical junction box ...

Page 57: ...e and realignment will be necessary Fig 11 3 Insert a hex wrench at the right end of the fan boss and turn it counterclockwise to loosen the fan Fig 12 Do not back the set screw all the way out of the fan boss Otherwise it might fall off and will be very difficult to pick up Fig 12 4 Slide the indoor fan out of the chassis through the opening in the left end where the bearing ass y was removed Fig...

Page 58: ...Fig 14 2 Slide the motor out of the indoor fan hub Fig 15 9 7 Removing Evaporator 1 Remove the air outlet frame ass y Fig 7 Refer to 9 4 Removing Electric Heater 2 Remove the screws holding the evaporator Fig 16 Evaporator Fig 16 Indoor fan motor Fig 15 R T Q S S R T Indoor fan Fig 14 ...

Page 59: ...Lift the condenser casing off the brackets on the front of the condenser end plates Fig 19 4 Hold the lower part of the condenser with both hands and tilt slightly then lift up carefully to avoid distorting the copper tube Fig 20 Condenser Condenser casing Fig 20 Condenser casing Bracket of condenser Fig 19 Condenser Fig 18 Condenser casing Fig 17 ...

Page 60: ...propeller fan from the motor shaft Fig 22 9 10 Removing Outdoor Fan Motor 1 Remove the condenser Refer to 9 8 Removing Condenser 2 Remove the propeller fan Refer to 9 9 Removing Propeller Fan 3 Cut the clamp holding the fan motor lead wire Fig 23 4 Remove the 4 screws of the fan motor mounting plate Fig 23 Clamp Fan motor Fig 23 Propeller fan Fig 22 Propeller fan Flat blade screwdriver or socket w...

Page 61: ...erature rises above T 1 F T F is set temperature Compressor ON Thermo OFF When the room temperature falls below set temperature T F T F is set temperature Compressor OFF Heating Heater ON When the room temperature falls below T F T F is set temperature Heater ON Heater OFF When the room temperature rises above T 1 F T F is set temperature Heater OFF Room temp T F T 1 F Heater ON ON OFF OFF OFF OFF...

Page 62: ...econds to 4 minutes Thermo ON When the room temperature rises above T F T F is set temperature Compressor ON Thermo OFF When the room temperature rises above T 1 F Compressor OFF Changeover to Heater ON When the room temperature falls below T 4 F the unit turns off heat pump operation and electric heater comes on instead of compressor Changeover to Heat Pump When the room temperature rises above T...

Page 63: ...om from dropping below freezing When the room temperature falls below 46 4 F the electric heater comes ON to keep the room temperature above freezing This function always works at any operational mode even when the unit is OFF The following chart shows an example when the mode selector switch is at OFF position ON ON OFF High High OFF OFF OFF Room temp 46 4 F 47 3 F Heater Indoor fan Room temp NOT...

Page 64: ...the electric heater instead of by heat pump NOTE Outdoor heat exch coil temp Release from defrosting Start of defrosting 41 F 14 F ON Solenoid coil 4 way valve Compressor OFF ON ON ON Electric heater ON ON Fan motor OFF OFF Set speed YES YES Temperature of outdoor heat exchanger coil is below 14 F Temperature of outdoor heat exchanger coil is higher than 41 F Defrosting begins Compressor ON Releas...

Page 65: ...witch HI HEAT provides heating with high fan speed operation LOW HEAT provides heating with low fan speed operation OFF setting stops heating or cooling operation FAN provides fan operation without cooling or heating LO COOL provides cooling with low fan speed operation HI COOL provides cooling with high fan speed operation As long as power is connected to the unit freeze protection always functio...

Page 66: ...CYCLE HEAT HIGH HEAT LOW OFF FAN LOW COOL HIGH COOL THERMOSTAT SELECTOR Cooling Electric Heating Models Heat Pump Models Fan cycle switch CONT CYCLE Fan cycle switch is in the CONT position at time of shipment NOTE When set to CYCLE indoor fan operation synchronizes with that of compressor s or heater s thermo ON and thermo OFF thereby saving power When set to CONT the fan continues to operate reg...

Page 67: ...tion of the air conditioner mount the electrical junction box firmly by using 2 screws Supporting the box with only hooks and slots is unstable and may cause dropping of the box CAUTION Cover plate Junction box Holder Field supply Fuse Field supply Knock out hole A knock out hole is provided on the cover plate of the electrical junction box to mount the fuse and fuse holder Be sure to comply with ...

Page 68: ...For Parts or Service Contact SANYO HVAC SERVICE CENTER SANYO Fisher Service Company 1165 Allgood Road Suite 22 Marietta GA 30062 U S A 300 Applewood Crescent Concord Ontario L4K 5C7 CANADA Jan 30 2002 ...

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Sanyo STW-2 Series, Technical & Service Manual

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