See guide for install and startup information.

General Information & Support

• Training attendance registration & "Hisense Comfort" app overview

• Technical support hotline details

Product Overview & Model Identification

• Outdoor unit nomenclature (S5 Series)

• Indoor unit nomenclature & unit types

• S5 Series outdoor combinations (6 to 20 tons)

• System component layouts (S5 Heat Recovery & Hi-Comfort Heat Pump)

Physical Installation Guidelines

• 4-Way cassette clearances & height limits

• Ceiling ducted suspension and service clearances

• Multi-port switchbox orientation and port identification

• Multi-module outdoor unit alignment and foundation spacing

Piping Standards

• S-Series heat pump piping limitations (distances, sizing, prohibited fittings)

• Outdoor unit service valve connection locations

Electrical & Control Wiring

• Power and communication wire specifications

• Terminal block designations for outdoor, indoor, and switchbox units

• Communication wiring architecture diagrams

• 24VAC thermostat adapter wiring and configuration

Addressing & DIP Switch Configuration

• Outdoor unit binary addressing (DSW2 / DSW4)

• Indoor unit binary addressing (DSW) and 8421 code reference tables

• Multi-port switchbox port disabling settings (DSW2 / DSW3)

Startup, Diagnostics & Troubleshooting

• 7-segment display reading (ODU & switchbox fault codes)

• Common startup alarm codes (d1-22, 05, 03, 35, C4, 31, 01, 19)

Warranty Registration

• Standard vs. extended warranty terms (2-year to 10-year coverage)

• Extended warranty eligibility and submission criteria

• Online portal submission process (Hi-Selection file & Hi-Checker data packaging)