Negative PPM Codes
Published: 2024-10-22 Revised: 2025-09-25
If you are running non-LDARtools monitoring software, you may not see the prompts mentioned in the Avoiding Contamination article. To remediate this, you can install Firmware 5.196 or newer, which will allow you to see these numbered error PPM codes:
| PPM Displayed | Means… |
|---|---|
| -16 | Generic flameout. |
| -40 | Pump at max power for too long, report the issue. |
| -41 | Probe Flow is blocked. Check Probe/ Change Filter. |
| -42 | Feels like you just removed my filter. Please give me a fresh filter so we can get back to work. |
| -45 | Looks like we just found a high PPM leak. Wait 30 seconds and reignite me. (Chamber overtemp) |
| -46 | Trying to ignite! If 3rd attempt fails, report the issue. |
| -100 | Generic flameout. |