Summary
This article provides a field-ready installation and commissioning guide for the UTY-RNRYZ1 wired wall controller. It covers compatibility, cabling, mounting, wiring, DIP settings, initialisation, addressing, and basic diagnostics—without links.
Applies to
Indoor units that support 2-wire wired remotes only (approx. 2017 onward platforms).
Single, group, and (where supported) multi-remote control installations.
Compatibility note: This remote is for 2-wire systems. On the indoor PCB, the remote mode must be set to 2WIRE. Using a 3-wire terminal or the wrong DIP setting will cause communication errors.
1) Parts & tools
In the box
Remote controller (front case + rear case)
Fixing screws (M4 × 16 mm)
Installation manual / operating manual
R/C mounting hardware
Cable band for strain relief
You provide
2-core non-polar, twisted pair cable (see specs below)
Flathead screwdriver, drill, level
Putty/sealant for cable hole
Small insulated screwdriver for DIP switch
2) Electrical requirements (2-wire bus)
Cable type:
Sheathed 2-core or shielded 2-core, twisted pair
Conductor: 0.33 to 1.25 mm² (approx. 22–16 AWG)
Routing rules:
Keep at least 2 m away from TV/radio lines; avoid parallel runs with mains.
Do not bundle with power or transmission cables.
If near strong EMI sources, use shielded cable and earth the shield per local rules (one end only).
Maximum length (guide): depends on gauge and system; typical runs up to 100 m are supported—follow the indoor unit table on site. Use continuous runs (no star wiring).
3) Mounting location & dimensions
Recommended height: ~1.4 m from finished floor to controller bottom.
Avoid direct sun, draughts, heat sources, or dew/condensation.
If using room sensor in the controller, keep clear of exterior walls and cold drafts; otherwise you may select the indoor unit sensor in settings.
Rear case hole pattern (approx.): 120 mm (W) × 120 mm (H) footprint; standard switch-box mounting supported.
4) Wiring topologies
A) Single control
One UTY-RNRYZ1 drives one indoor unit (or an indoor group on the VRF network).
B) Group control
One controller can simultaneously operate up to 16 indoor units as a group (wiring in/out daisy chain). All units must share a functional earth and correct address plan.
C) Multiple remote control (where supported)
VRF: Up to 4 wired remotes on one indoor unit
RAC: Up to 2 wired remotes
Do not mix 1 wired type with 2 wired type beyond the stated limits.
5) Cable preparation & strain relief
Strip lengths (typical): A = 7 mm, B = 7 mm, C = 25 mm.
Use the supplied cable tie for strain relief so pulling force does not load the terminal screws.
Tightening torque at terminal block: 0.8–1.2 N·m (8–12 kgf·cm).
6) Installation steps
6.1 Prepare the rear case
Switch box mount: Fix rear case to box; seal cable hole with putty.
Direct wall mount: Drill/tap anchors; feed cable through rear case; seal wall penetration.
On-wall trunking: Route conduit/trunk; de-burr; secure rear case; seal entries.
6.2 Front case removal
Release two side claws with a flat-blade screwdriver; lift off front case from rear case.
Disconnect the small internal connector only when necessary.
6.3 DIP switch (front case PCB)
Set the small backup-battery/clock DIP to ON (enables backup function). Handle with an insulated screwdriver.
6.4 Connect the 2-wire cable (controller end)
Land on non-polar terminals (Y1/Y2). Polarity does not matter.
Keep functional earth separate; never tie to telephone/ground/water pipe.
6.5 Connect at the indoor unit (choose one)
Method 1 — Connector pigtail (inbox lead):
Cut and strip controller cable.
Join to the supplied connecting cable with an insulated crimp (red/black).
Plug the connector into the indoor on-board socket (e.g., CN01).
On the indoor PCB, set SW1 = 2WIRE.
Method 2 — Terminal block:
Terminate directly to the exclusive remote terminal block.
On the indoor PCB, set SW1 = 2WIRE.
Tightening torque: 0.5–0.6 N·m (5–6 kgf·cm).
Important: Always power OFF the indoor unit before changing SW1 (2WIRE/3WIRE). Switching live can damage the PCB.
6.6 Attach the front case
Fit the front case carefully; confirm no cables are pinched.
Finalize with screws; clean the fascia.
7) Power-up & initialisation
Restore power; if an error screen appears, power down all units, re-check wiring and DIP, then retry.
Follow the Setup Wizard in order:
Language
Master/Slave (set Master for single controller; slaves for additional remotes in multi-remote installs)
Date & Time
Temperature unit (°C/°F)
Password defaults (enable/disable installer/admin password use)
Optional installer settings (from Initial Setting / Maintenance menus):
RC Sensor Setting (Room temp by Controller or Indoor Unit)
RC Group Name (label zones/rooms)
Master Indoor Unit (for multi-connected systems)
Display Item Settings (Filter sign, Room temp on home screen)
I.U. Display Number / Address Verification (identify and verify unit addresses)
Function Setting (apply indoor-unit function numbers per installation needs)
8) Maintenance & test functions (controller menu)
Error History — stores up to ~32 entries (oldest auto-deletes).
Setting Status List — snapshot of current configuration.
Filter Sign Reset — reset after cleaning cycle.
Version — firmware/build details.
Test Run — timed test (~60 min) for connected units; cancel via On/Off.
Installer Password Change — change 4-digit installer code.
Initialization — resets the controller (re-enter settings after).
9) Addressing & verification (VRF/RAC networks)
Auto addressing typically occurs at first start; if needed, use R.C. Address Setting → Manual to set 01–32 per indoor on the shared remote cable.
I.U. Address Verification helps locate the indoor unit: select the address → the indoor beeps/blinks (when supported).
Avoid duplicates on the same remote cable. Record addresses on the as-built drawing.
10) Quick fault reference (wired-remote system)
CC.1 — Sensor error
02.1 — Transmission PCB error
12.1 — Wired remote communication error
12.3 — Remote controller capacity excess
12.4 — Remote controller start-up error
26.4 / 26.5 — Address duplication / Address setting error
15.4 — Data acquisition error
First checks: 2-wire DIP at indoor = 2WIRE, cable continuity, no star wiring, terminals tight, correct master/slave roles, and compatible indoor platform (2017+ 2-wire support).
11) Commissioning checklist (attach to job card)
Indoor PCB SW1 = 2WIRE confirmed (power OFF during change)
Cable: 2-core twisted, size verified; route clear of mains & EMI sources
Rear case sealed; strain relief fitted; terminal torques correct
Controller DIP (backup) set; date/time and language set
Master/Slave roles and group membership defined
Sensor source chosen (RC vs IU)
Addresses verified; display numbers labelled
Test run completed; no error codes present
Owner handover: basic use + filter sign reset
Key takeaways
UTY-RNRYZ1 is a 2-wire only wired remote—ensure the indoor unit platform supports 2-wire (≈2017+) and the indoor DIP is set to 2WIRE.
Use non-polar twisted pair, follow sound wiring practice, and complete the on-screen setup and address checks for a clean handover.
