11-3. Checking Electrical Components
11-3-1. Components
Flow |
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| (Normal) Upper: Volt, Amp. | Remarks | ||||||
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No. |
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| Wire Color | (Normal) Lower: Resistance | |||||||
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1 |
| T |
| WHT – BLU | DC | 1 – 12 (Pulse) | Flap motor | |||||
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| 300 – 450 Ω | |||||||||
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| BLU – BRN | AC | 100 – 130 V |
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2 |
| S |
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| 30 – 60 Ω |
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| Indoor fan motor | ||||
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| RED – BLU | DC | 1 – 12V |
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| More than 3000 Pulse/min. |
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| 50°F (10°C) | 9.0 – 11.0 kΩ | Indoor | ||
3 |
| Z |
| 1WHT – GRY2 | 68°F (20°C) | 5.5 – 7.0 kΩ | ||||||
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| room temperature sensor | ||||||||||
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| 86°F (30°C) | 3.5 – 4.5 kΩ | |||
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4 |
| U |
| 3BLK – BLK4 | 50°F (10°C) | 100 – 120 kΩ | Indoor | |||||
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| 68°F (20°C) | 50 – 60 kΩ | coil temperature sensor | ||||||||
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5 |
| B |
| BLK – BLK | AC | 100 – 130 V | Reversing valve | |||||
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| 300 – 400 Ω | |||||||||
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| BLK – WHT | 1 – 5 Ω |
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6 |
| R |
| WHT – PNK |
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| Compressor | |||||
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| BLK – PNK |
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7 |
| Terminal block |
| WHT | 3 – 5 A |
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| Ampere current | ||||
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| 68°F (20°C) | 9.8 – 10.8 KΩ | Outdoor | ||
8 |
| KM |
| BLK – BLK | 86°F (30°C) | 6.8 – 7.3 KΩ | ||||||
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| thermistor 1, 2 | ||||||||||
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| 140°F (60°C) | 2.4 – 2.6 KΩ | |||
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| D |
| PUR – PUR | AC | 30 – 115 V | Combustion blower motor | |||||
9 |
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| 10 – 30 Ω |
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| N |
| RED – BLU | DC | 1 – 5 V |
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| Combustion blower motor | ||||
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| More than 1000 Pulse/min. | fan speed sensor | ||||||||
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! |
| O |
| BLU – BLU | DC | 5 – 24 V |
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| 40 – 160 Ω | control valve | ||||||||
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" |
| J |
| BLK – Ground | AC | 100 – 130 V | Flame sensor probe | |||||
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| More than DC 1 µA | ||||||||||
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# |
| P |
| YEL – YEL | Not more than DC 1 V | Thermal fuse | ||||||
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| Not more than 1 Ω | bimetal thermostat | |||||||||
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$ |
| I |
| WHT – WHT | DC | 90 – 120 V | Gas valve 1 | |||||
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| 1 – 2.5 kΩ |
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% |
| I |
| ORG – ORG | DC | 90 – 120 V | Gas valve 2 | |||||
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| 1 – 2.5 kΩ |
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& |
| G |
| RED – RED | AC | 100 – 130 V | Ignition transformer | |||||
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( |
| E |
| BLK – BLK | AC | 100 – 130 V | ON/OFF valve 1 | |||||
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| 300 – 500 Ω | |||||||||
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) |
| F |
| BLK – BLK | AC | 100 – 130 V | ON/OFF valve 2 | |||||
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| 300 – 500 Ω | |||||||||
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| C |
| WHT – BLU | AC | 100 – 130 V |
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| V |
| WHT – BRN |
| 70 – 150 Ω | Outdoor fan motor | |||||
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| WHT – PNK |
| 300 – 500 Ω |
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+ |
| W |
| PNK – PNK | Not more than AC 1 V | Overload relay | ||||||
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| Not more than 1 Ω | ||||||||||
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Operation |
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| Outdoor Unit Voltage at Terminal Block |
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| 1 – 2 |
| 1 – 3 |
| 1 – 4 |
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Cooling • Dry |
| 100 – 130 V |
| 100 – 130 V | 0 V |
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| Heating |
| 100 – 130 V |
| 100 – 130 V | 100 – 130 V |
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| OFF |
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| 100 – 130 V | 0 V |
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