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
Back to Carrier® WeatherMaker® - 17.5 Ton Packaged Rooftop Gas Heat & Electric Cool Unit (460-3-60)
Carrier® WeatherMaker® - 17.5 Ton Packaged Rooftop Gas Heat & Electric Cool Unit (460-3-60) 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® - 17.5 Ton Packaged Rooftop Gas Heat & Electric Cool Unit (460-3-60)
| 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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Try another nearby city or contact GreenFlow to confirm service availability.
Our Happy Customers
Melissa S.
The repair person came quickly and was super efficient and polite, and showed me what to do next time. He gave my dog a quick pay and was off again.
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.
Jahangir R.
They were very organized to communicate and be on time to come to look at my air condition to fix it.
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.