General Assist Technical Reference
Wired Remote Controller Wiring
2-wire non-polar and 3-wire polarity-sensitive controller connections
Use the correct wiring method for the remote controller type. Two-wire controllers use a non-polar connection, while three-wire controllers are polarity sensitive and must be connected to the matching terminals.
2-wire wired remote controllers
The two-wire wired remote controller uses a non-polar 2-wire connection.
Key point: The two remote-controller conductors can be connected either way around. Polarity does not need to be observed.
| Item | Requirement |
|---|---|
| Controller type | 2-wire wired remote controller |
| Polarity | Non-polar |
| Cable size shown | AWG 16-22 (approximately 1.3-0.3 mm²) |
3-wire wired remote controllers
Three-wire remote controllers are polarity sensitive.
Important: Connect terminals 1, 2 and 3 at the indoor unit to the corresponding 1, 2 and 3 terminals on the wired remote controller. Do not interchange the conductors.
| Item | Requirement |
|---|---|
| Controller type | 3-wire wired remote controller |
| Polarity | Polarity sensitive |
| Terminal matching | 1 to 1, 2 to 2, 3 to 3 |
| Cable size shown | AWG 22 (approximately 0.3 mm²) |
Quick reference
| Remote controller wiring | Polarity | Connection rule |
|---|---|---|
| 2-wire | Non-polar | Either conductor can be connected to either remote-controller terminal |
| 3-wire | Polarity sensitive | Match terminal numbers exactly: 1-1, 2-2, 3-3 |