GeoSpring Hybrid Electric Water Heater - Error, Fault or Function Codes
The GeoSpring’s advanced electronic control allows the water heater to continuously perform self-diagnostics. This provides the owner with early and accurate detection of any operating malfunction and alerts the owner immediately if an error has occurred.
The digital display provides an error, fault or function code that the owner can communicate to the servicer. This will help identify the type of problem with the water heater and ensure the product can be repaired on the first visit.
| Fault Code | Condition | Action |
| F-A* | T4 Not Rising | Call service |
| F-B* | Discharge Temp Not Stable | Call service |
| F-C | Evaporator Not Frost Free | Call service |
| F-D | Superheat Too Low | Call service |
| F-E | Discharge Temperature Above Limit | Call service |
| F-F | Electronic Expansion Valve Out of Range | Call service |
| F-G | T5 Ambient Temperature Check | Technician service data |
| F-H* | Compressor Load Test | Technician service data |
| F-I | Refrigerant Leak Test | Call service |
| F-J* | Concurrent Load High Current | Call service |
| F-L* | Evaporator Not Defrosting | Call service |
| F2 | T2 Tank Temperature Sensor | Call service |
| F3 | Compressor Failure | Call service |
| F4 | Fan Failure | Call service |
| F5 | T3a Sensor (Evap inlet temperature) Failure | Call service |
| F6 | T3b Sensor (Evap outlet temperature) Failure | Call service |
| F7 | T4 Sensor (Compressor outlet) Failure | Call service |
| F8 | T5 Sensor (ambient temperature) Failure | Call service |
| F9 | Lower Heating Element Failure | Call service |
| F10 | Upper Heating Element Failure | Call service |
| F11 | Dry Tank Fault | Turn power off to unit , fill tank with water per manual, then turn power back on. |
| bAd linE (F12) | The voltage is too low at power-up | Turn power off to unit, correct wiring issue, then turn power back on. |
| F13 | Stuck Key Fault | Call service |
| Dirty Filter (F14) | Filter is dirty | See owner's manual for cleaning instructions |
| F15 | DataFlash Fault | Call service |
| F16* | Anode Rod Depleted | Call service, see 'Anode Rod Maintenance & Service' info in owner's manual. |
| F17* | Empty Tank or Anode Rod Wired Incorrectly | Call service |
| F18* | Current Transformer Wired Incorrectly | Call service |
| F19* | Low Line Voltage | Technician service data |
| F20* | Condensate Drain Pan Port Clogged | See owner's manual for cleaning instructions |
| F21* | Application Update Failure | Call service |
| F22* | Parametric Date Updated Failure | Call service |
| F23* | Micro A/D Failure | Call service |
*Some models
This information is provided as a point of reference only. Any time an error, fault or function code is displayed, service will be required.
Please Note: Any failure of the heat pump will result in an automatic switch to the resistance heat mode to ensure a constant supply of hot water.
For service and support on the GeoSpring Hybrid Electric Water Heater, please contact 1-888-443-4394, Monday - Friday from 8:00 AM to 8:00 PM EST.