Safe visible checks
- Thermostat display and settings
- Filter condition and return-air path
- Visible outdoor-unit obstruction
- Photos of the code, unit, and nameplate
Product troubleshooting
Carrier® WeatherMaker® - 8.5 Ton Packaged Rooftop Gas Heat & Electric Cool Unit R-410A (208/230-3-60) troubleshooting and error codes
Use this table to identify what the visible code may mean and what information to share when scheduling service. Keep checks simple and visible; do not open electrical, refrigerant, gas, or sealed equipment compartments.
Error-code table
Search codes for Carrier® WeatherMaker® - 8.5 Ton Packaged Rooftop Gas Heat & Electric Cool Unit R-410A (208/230-3-60)
| Code | Meaning | System area | Safe first step | Action |
|---|---|---|---|---|
| Off | Hardware failure | IGC board | Record the displayed code or LED pattern, avoid repeated reset attempts, and schedule GreenFlow service. | View details |
| 1 Flash | Fan ON delay modified | Fan timing | Record the displayed code or LED pattern, confirm thermostat or controller demand, check visible airflow and outdoor-area conditions, and schedule service if the condition remains. | View details |
| 3 Flashes | Flame sense fault | Flame sensing | Record the displayed code or LED pattern, avoid repeated reset attempts, and schedule GreenFlow service. | View details |
| 4 Flashes | Four consecutive limit switch fault | Limit switch | Record the displayed code or LED pattern, avoid repeated reset attempts, and schedule GreenFlow service. | View details |
| 5 Flashes | Ignition fault | Ignition | Record the displayed code or LED pattern, avoid repeated reset attempts, and schedule GreenFlow service. | View details |
| 6 Flashes | Induced draft motor fault | Induced draft motor | Record the displayed code or LED pattern, avoid repeated reset attempts, and schedule GreenFlow service. | View details |
| 7 Flashes | Rollout switch lockout | Rollout switch | Record the displayed code or LED pattern, avoid repeated reset attempts, and schedule GreenFlow service. | View details |
| 8 Flashes | Internal control lockout | IGC board | Record the displayed code or LED pattern, avoid repeated reset attempts, and schedule GreenFlow service. | View details |
| 9 Flashes | Temporary software lockout | IGC board | Record the displayed code or LED pattern, avoid repeated reset attempts, and schedule GreenFlow service. | View details |
No matching error codes found.
Safety note
What is safe to check before service
These pages are meant to help document the issue, not replace diagnosis. GreenFlow should handle pressure-switch, electrical, refrigerant, lockout, recurring, and warranty-related conditions.
Stop and call
- Repeated lockouts or recurring faults
- Pressure-switch or sensor faults
- Electrical odor, unusual noise, or ice buildup
- Any sealed cabinet, refrigerant, gas, or warranty issue
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Our Happy Customers
Sharad W.
Green Flow and the people who work there are terrific. Vlad and Andre are excellent. Andre was very helpful. He was punctual, respectful, efficient and knowledgeable. He did not try to sell me something I didn’t need ( as others have done before). I was charged $99 which...
Anna G.
They quickly identified the issue with the heating system and fixed it efficiently. He explained everything clearly and made sure I understood what was going on. Very professional and reliable, extremely satisfied with the service.
Ray
Just had a service call because my tankless water heater stopped working with E110 code. Andrey located the root cause real quick and fixed the issue within half an hour, also gave reasonable recommendations for further maintenance.
Anna F.
They showed up within an hour of me making the call on a Sunday. They fixed our system and taught us how to replace the fuse in the future. We would definitely call again.