Sunfire Heater Support
Medart Engine University offers support for the Sunfire brand of heaters. If you are a dealer needing help diagnosing a no start or erratic operation feel free to contact us.
SunFire heaters generally include their service and maintenance instructions within their Operation & Service Manuals.1 These manuals cover critical tasks such as nozzle replacement, air band adjustments, and fuel pump pressure settings.
Depending on your specific model, you can access the official manuals and parts guides below:
Official Manuals by Model
SunFire SF-80 & SF-120: Download Operation & Service Manual
SunFire SF-150: Download Operating Manual
SunFire SF-100 (Legacy): Download Operating Manual
Key Service Information
If you are troubleshooting a specific issue, these common service procedures are detailed in the manuals:
| Task | Common Specification/Action |
| Air Band Adjustment | Usually set between 1.25 and 1.50. |
| Nozzle Maintenance | Clean or replace if the flame is smoky or the "Green Light" blinks. |
| Fuel Filter | Replace element after every 200 hours of operation. |
| Electrode Gap | Requires a specific gap setting (often checked with a Carlin gauge). |
| Diagnostic Lights | Solid Green: Running correctly. Blinking Green: Flame efficiency issue. |
Parts & Technical Support
Parts Manuals: You can find exploded diagrams and part numbers for all models on the SunFire Parts Support Page.
Direct Support: If you have a specific technical question or a warranty claim, you can call SunFire at +1 (855) 251-1649.
Note: Ensure the unit is unplugged and completely cooled before performing any internal maintenance, especially when accessing the burner assembly or nozzle.
