General Assist Technical Reference
Controller & Accessory Part Number Supersessions
Compatibility and replacement guidance
Guidance for Sales, Service and Parts teams
To maintain product continuity and improve forward compatibility, several controller and accessory part numbers have been superseded. These updates are intended to be form/fit/function equivalent for current applications, while also future-proofing for upcoming model usage.
Quick Summary
| Previous Part | Superseding Part | Replacement Status |
|---|---|---|
| UTY-RNRYT5 | UTY-RNRYT6 | Direct replacement - no compatibility or operation change |
| UTY-RSRYT | UTY-RSRYT1 | Direct replacement - no compatibility or operation change |
| UTY-RHRYT | UTY-RHRYT1 | Direct replacement - no compatibility or operation change |
| UTY-DCGYZ3 | UTY-DCGYZ4 | Direct replacement - no compatibility or operation change |
| UTY-DTGYZ1 | UTY-DTGYZ2 | Technical changes apply - separate guidance required |
Important - UTY-DTGYZ2: This supersession includes functional and technical changes. Do not provide like-for-like replacement assurances until the separate compatibility and application guidance is released.
Replacement Details
1. UTY-RNRYT5 → UTY-RNRYT6
Solution outcome
- Split compatibility: No change
- Multi compatibility: No change
- Existing R410A VRF compatibility: No change
- Future-proofing: Updated to support future model usage
- Customer impact: Same look and operation - no change to user experience
2. UTY-RSRYT → UTY-RSRYT1
Solution outcome
- Split compatibility: No change
- Multi compatibility: No change
- Existing R410A VRF compatibility: No change
- Future-proofing: Updated to support future model usage
- Customer impact: Same look and operation - no change to user experience
3. UTY-RHRYT → UTY-RHRYT1
Solution outcome
- Split compatibility: No change
- Multi compatibility: No change
- Existing R410A VRF compatibility: No change
- Future-proofing: Updated to support future model usage
- Customer impact: Same look and operation - no change to user experience
4. UTY-DCGYZ3 → UTY-DCGYZ4
Solution outcome
- Existing R410A VRF compatibility: No change
- Future-proofing: Updated to support future model usage
- Customer impact: Same look and operation - no change to user experience
5. UTY-DTGYZ1 → UTY-DTGYZ2
Technical change - additional guidance required
- This supersession includes functional/technical changes.
- Action: Separate communications will be issued to detail compatibility and application guidance prior to broad rollout.
Operational Guidance
For Sales, Service and Parts
- Treat the superseding part numbers as the default supply replacement moving forward.
- For UTY-RNRYT6 / UTY-RSRYT1 / UTY-RHRYT1 / UTY-DCGYZ4, advise stakeholders: “direct replacement, no compatibility change, same operation.”
- For UTY-DTGYZ2, do not provide “like-for-like” assurances until the separate guidance note is released.