General Assist Technical Reference
Test Run from Remote Controller
How to place an air conditioner into Test Run operation
Instructions for wired and wireless remote controllers
A Test Run can be started in several different ways depending on the remote controller and indoor unit model. Test Run operation bypasses normal room-temperature demand and operates the system in either Forced Cooling or Forced Heating.
1. What Does Test Run Do?
Test Run is primarily used during installation, commissioning and service work to force the air conditioner to operate without waiting for the normal room-temperature control conditions.
| Normal Operation | Operation is controlled according to room temperature and set temperature. |
| Test Run | Room-temperature demand is bypassed so the system can operate in forced cooling or forced heating. |
Important: The exact Test Run method depends on the remote controller and indoor unit model. Use the procedure applicable to the controller installed on the system.
2. Wired Remote Controller – UTY-RNNYN
For the UTY-RNNYN wired remote controller, Test Run is activated using a button combination.
| 1 | Stop the air conditioner operation. |
| 2 | Press the Master Control button and the Fan Control button simultaneously for approximately 2 seconds or more. |
| 3 | Confirm that the Test Run indication appears on the remote controller display. |
| 4 | To stop Test Run, press the START/STOP button. |
UTY-RNNYN: Stop operation → Hold Master Control + Fan Control for 2 seconds or more → Test Run starts.
3. Wired Remote Controller – UTY-RVNYN
The UTY-RVNYN controller provides Test Run through the controller's Service menu.
| 1 | Access the controller's Service menu. |
| 2 | Select Test Run from the Service menu. |
| 3 | Follow the controller prompts to begin Test Run operation. |
Service Menu Reference
- Test run
- Function setting
- Error history
- I.U. address verification
- Version
4. Wired Remote Controller – UTY-RNNYNZ3
The UTY-RNNYNZ3 also provides Test Run through its Maintenance menu.
| 1 | Open the Maintenance menu. |
| 2 | Select Test Run. |
| 3 | Follow the on-screen instructions to start the Test Run. |
Maintenance Menu Reference
| Test Run | R.C. Address Setting |
| I.U. Address Verification | Function Setting |
5. Wireless Remote Controller
Many wireless remote controllers include a dedicated TEST RUN button.
The TEST RUN button is commonly a small recessed button on the remote controller and may require a pen tip or similar non-damaging object to operate.
| 1 | Locate the recessed TEST RUN button on the wireless remote controller. |
| 2 | Point the remote controller towards the indoor unit receiver. |
| 3 | Press the TEST RUN button to initiate Test Run operation. |
Manual AUTO / Forced Cooling
Some indoor units can also be placed into forced operation using the MANUAL AUTO button located on the indoor unit.
MANUAL AUTO: Press and hold the button for more than 3 seconds to initiate Forced Cooling Operation.
Model variation: Button location, required press duration and available forced-operation functions can vary between indoor unit models. Always refer to the applicable service or installation manual where available.
6. Quick Reference
| Controller | Test Run Method |
|---|---|
| UTY-RNNYN | Stop operation, then hold Master Control + Fan Control for 2 seconds or more |
| UTY-RVNYN | Service menu → Test Run |
| UTY-RNNYNZ3 | Maintenance menu → Test Run |
| Wireless Remote Controller | Press recessed TEST RUN button |
| Indoor Unit MANUAL AUTO | Press and hold for more than 3 seconds for Forced Cooling on applicable models |
Service note: Test Run is intended for commissioning and diagnostic purposes. Do not leave the system operating in Test Run unnecessarily, as normal room-temperature control is bypassed.