The manual test mode can also be initiated by pressing and holding the controller service pin for two (2) seconds.
| UC400 & Symbio 500 Button Location | Symbio 400-B Button Location |
After pressing the service pin, the service LED illuminates green and then turns off after the TGP2 code has advanced to the next step.
At this point, either press the service pin to advance to the next step or stay in the current step for up to one (1) hour.
Exiting Manual Control:
- Cycle through to Step 13
- After one (1) hour, the unit automatically returns to Normal Operation.
- Cycle power at the disconnect
- The unit ignores compressor delays and minimum on/off times for manually testing. However, if a diagnostic is triggered that would typically force the compressor(s) off, the controller then allows any states that request compressor operation and will advance directly to Normal Operation.
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.