Honeywell VisionPRO HVAC System Error Codes
High-Efficiency HVAC System.
9 error codes documented.
Severity breakdown:
8 warning , 1 informational
Error Codes
| Code | Description | Severity |
| E1 | Communication Error | Warning |
| E2 | Sensor Fault | Warning |
| E3 | EEPROM Error | Warning |
| E351 | Equipment Fault | Warning |
| E352 | Sensor Open | Warning |
| E353 | Sensor Short | Warning |
| E4 | Short Cycle Protection | Warning |
| E5 | Wiring Error | Warning |
| E350 | Low Battery | Info |
Cross-Reference: Shared Codes with Other Honeywell Models