Overview
During the Signature Countertop 2.0 Installation wizard, an automatic initial diagnostic test runs to help identify if any wires, boards, or connections are loose or damaged. The test can be re-run after checking and resolving any issues that were found, until all checks pass. This test takes about 30 seconds.
An additional set of final diagnostic tests will run at the end.
See below for information about the types of errors that may display, and what steps to take.
In this Article (click to jump)
How to Run the Tests
🔌 NOTE: If the wrong voltage is selected in the first step (Select power configuration...), the tests will fail. If this happens, simply use the onscreen prompts to restart the test and select the correct voltage to try again.
- To start test, ensure the selected power configuration matches the supply voltage (120 V or 240 V), and then tap the Play button onscreen.
- If all tests pass, the Continue button is enabled. Tap it to proceed with install.
- If there's a failure, the Continue button is disabled.
- Tap the View button to see the list of error(s).
- See links below to get help with a specific error and troubleshoot to resolve.
- After resolving any issue(s), re-run the test by tapping the Play button again.
Initial Diagnostic Checks - Errors
Select from the links below to view the support article for each error message that may appear during the initial installation diagnostic checks.
| Name of error (Click for troubleshooting) | Link | Triggered by/Note: |
| BUCB 24VDC out of range | Link | Voltage was read below 23.25 V, or above 24.5 V. |
| HUCB 24VDC out of range | Link | Voltage was read below 23.25 V, or above 24.5 V. |
| BUCB Watchdog 24VDC out of range | Link | Voltage was read below 23.25 V, or above 24.5 V. |
| HUCB Watchdog 24VDC out of range | Link | Voltage was read below 23.25 V, or above 24.5 V. |
| HUCB 12VDC out of range | Link | Voltage was read below 11.5 V, or above 12.25 V. |
| BUCB 5VDC out of range | Link | Voltage was read below 4.75 V, or above 5.25 V. |
| HUCB 5VDC out of range | Link | Voltage was read below 4.75 V, or above 5.25 V. |
| HUCB Current (24V) out of range | Link | Current was read below 0.2 A, or above 0.8 A. |
| HUCB Current (12V) out of range | Link | Current was read below 0.4 A, or above 1.2 A. |
| HUCB Current (Valves) out of range | Link | Current was not read, or above 0.05 A. |
| BUCB Current (Valves) out of range | Link | Current was not read, or above 0.05 A. |
| BUCB Chiller Current (AC) out of range | Current was not read, or above 0.1 A. | |
| BUCB LOW Current (AC) out of range | Current was not read, or above 0.1 A. | |
| BUCB Current (DC) out of range | Current was read below 0.25 A, or above 1 A. | |
| HUCB Flow Sensor out of range | Link | N/A for PV |
| SBC CPU temp out of range | Link | SBC CPU temperature is below 0° C, or above 70° C. |
| SBC GPU temp out of range | Link | SBC GPU temperature is below 0° C, or above 70° C. |
| HUCB temp out of range | HUCB temperature is below 0° C, or above 50° C. | |
| Head unit humidity out of range | Head Unit humidity is below 10%, or above 90% humidity. | |
| Ice bank temp too low / not connected | Link | Ice Bank temperature is below 0° C, above 30° C, or not detected (NaN). |
| BUCB temp out of range | Link | BUCB temperature is below 0° C, or above 50° C. |
| Buffer Tank Pressure Too High/Too Low/ Not Connected | Link | Buffer Tank Pressure sensor is below -15 psi, above 120 psi, or not read (NaN). |
| Dispense detect pressure out of range | Link | Dispense Pressure sensor is below -15 psi, or above 120 psi. |
| Low Pressure Switch State | Link | Low Pressure CO2 Switch was not detected. |
| High Pressure Switch State | Link | High Pressure CO2 switch was not detected. |
| Demand pump current out of range | Link | Demand Pump current was read below 0.5 A, or above 5 A. |
| Inlet solenoid current out of range | Link | Inlet Solenoid current was read below 0.3 A, or above 0.65 A. |
| Ice bank fill solenoid current out of range | Link | Ice Bank Fill Solenoid current was read below 0.3 A, or above 0.65 A. |
| Still solenoid current out of range | Link | Still Solenoid current was read below 0.3 A, or above 0.65 A. |
| Sparkling solenoid current out of range | Sparkling Solenoid current was read below 0.3 A, or above 0.65 A. | |
| Ambient solenoid current out of range | Ambient Solenoid current was read below 0.3 A, or above 0.65 A. | |
| Flavor pump current out of range | Link | Flavor pump current was read below 0.1 A, or above 0.6 A. |
| Flavor sense reading out of range | Flavor sense values below 465, or above 545 (unitless) | |
| Lost USB communication to Compact Chiller. | SBC lost USB communication to Compact Chiller BUCB. | |
| Lost USB communication to Head Unit Control Board | Link | SBC lost USB communication to HUCB. |
Final Diagnostics Test - Errors
Select from the links below to view support for each error message that may appear during the final additional checks to verify the chiller compressor and heater are functioning properly.
| Name of error (Click for troubleshooting) | Link | Triggered by/Note: |
| Agitator current out of range | Link | Agitator current was read below 0.1 A, or above 2 A. |
| Compressor current out of range | Link | Compressor current was read below 1.2 A, or above 3.5 A. |
| Chiller fan current out of range | Link | Chiller Fan read below 2200 rpm, or above 4500 rpm. |
| Leak detected at the base of the chiller | Link | Water detected in base of Compact Chiller. |
| Lost USB communication to Compact Chiller | SBC lost USB communication to Compact Chiller BUCB. | |
| Lost USB communication to Head Unit Control Board | Link | SBC lost USB communication to HUCB. |
| High CO2 Switch Not Detected | Link | High Pressure CO2 switch was not detected. |
| Lost IoT connection | SBC lost IoT (internet) connection. |