How to Fix Continuous Filter Alarm on Geospring Water Heater
GE GeoSpring water heater error codes
These error code explanations can help you diagnose a problem with your GE GeoSpring water heater.
The control panel beeps and the error code appears in the digital display when the control detects a component failure. For example, when the control detects that the evaporator fan isn't running, the GeoSpring water heater displays the F4 code and its control panel beeps. Follow the troubleshooting tips shown in the chart below to diagnose and repair the F4 code or other codes that appear in the display.
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Error Code
Condition
DIY advice
FA
Compressor discharge temperature not rising
Check/Repair
The T4 sensor (compressor outlet temperature sensor) must detect at least a 20-degree temperature rise during the first 30 minutes of run time. Disconnect the power or unplug the water heater and check T4 sensor mounting, wiring and ohm resistance. T4 sensor should measure approximately 55k ohms at 77 degrees Fahrenheit or 188k-2k when the compressor discharge temperature is 30-250 degrees. If all the steps above check out and the compressor outlet temperature still is not rising, call a service technician to check the sealed refrigerant system for proper charge and to check the thermal expansion valve (TXV).
Possible parts
T4 sensor, Thermal expansion valve
FB
Compressor discharge temperature not stable
Check/Repair
The T4 sensor (compressor outlet temperature) must be greater than 120 degrees Fahrenheit after 30 minutes of run time. Disconnect power or unplug the water heater and check T4 sensor mounting, wiring and ohm resistance. T4 sensor should measure approximately 55k ohms at 77 degrees or 188k-2k when the compressor discharge temperature is 30-250 degrees. If all the steps above check out and the compressor discharge temperature still is not stable, call a service technician to check the sealed refrigerant system for proper charge and the thermal expansion valve (TXV) operation.
Possible parts
T4 sensor, Thermal expansion valve
FC
Evaporator frosted over
Check/Repair
The T3a sensor (evaporator inlet temperature) must be greater than 20 degrees Fahrenheit after 30 minutes of run time. Disconnect power or unplug the water heater and check T3a sensor mounting, wiring and ohm resistance. The T3 sensor should measure approximately 10k ohms at 77 degrees or 57k-3k when the evaporator inlet temperature is 15-130 degrees. If all the steps above check out, call a service technician to check the sealed refrigerant system for proper charge and the thermal expansion valve (TXV) operation.
Possible parts
T3a sensor, Thermal expansion valve
FD
Super heat is too low
Check/Repair
Disconnect power or unplug the water heater and then check temperature sensors T3a, T3b and T5 mounting, wiring and the ohm resistance of each sensor. Sensors T3a, T3b and T5 should measure approximately 10k ohms at 77 degrees Fahrenheit. Check and clean the filter. If all the above steps check out, call a service technician to check the sealed refrigerant system for proper charge and the thermal expansion valve (TXV) operation.
Possible parts
T3a sensor, T3b sensor, T5 sensor, Thermal expansion valve
FE
Discharge temperature above the limit
Check/Repair
The compressor discharge temperature exceeded 240 degrees Fahrenheit. Verify that T4 sensor (compressor outlet temperature sensor) measures approximately 188k-2k ohms after 30 minutes of run time. Disconnect power or unplug the water heater and then check T4 sensor mounting, wiring and ohm resistance. If all the above steps check out, call a service technician to check the sealed refrigerant system for proper charge and the thermal expansion valve (TXV) operation.
Possible parts
T4 sensor, Thermal expansion valve
F2
Tank temperature sensor failure
Check/Repair
The control checks the T2 tank sensor temperature before the compressor starts and it must be 30-u2013170 degrees Fahrenheit. Disconnect power or unplug the water heater and then check T2 sensor mounting, wiring and ohm resistance. The ohm resistance should measure approximately 10k ohms at 77 degrees. If the T2 sensor is okay, replace the power control board (PCB).
Possible parts
T2 sensor, Power control board
F3
Compressor failure
Check/Repair
The control energized the compressor but the current sensor does not detect any current flow. Disconnect power or unplug the water heater and then check the compressor, relay and wiring. Call a service technician if the compressor has failed.
F4
Fan failure
Check/Repair
Disconnect power or unplug the water heater and then check the evaporator for a loose or broken wire connection. If fan motor wiring connections are okay, replace the evaporator fan motor. If the F4 code returns after replacing the evaporator fan, replace the power control board (PCB).
Possible parts
Fan motor, Power control board
F5
T3a sensor failure
Check/Repair
Before the compressor starts, the control checks that T3a, T3b and T5 sensors are all within 15 degrees Fahrenheit of each other. Disconnect power or unplug the water heater and then check T3a sensor mounting, wiring and resistance. The ohm resistance of the T3a, T3b and T5 sensors should measure approximately 10k ohms at 77 degrees. If the sensors are okay, replace the power control board (PCB).
Possible parts
T3a sensor, T3b sensor, T5 sensor, Power control board
F6
T3b sensor failure
Check/Repair
Disconnect power or unplug the water heater and then check the T3b (evaporator sensor) sensor mounting, wiring and the ohm resistance of the sensors. The ohm resistance of sensors T3a, T3b and T5 must measure approximately 10k ohms at 77 degrees Fahrenheit. If the sensors are okay, replace the power control board (PCB).
Possible parts
T3b sensor, T3a sensor, T5 sensor, Power control board
F7
T4 sensor failure
Check/Repair
Disconnect power or unplug the water heater and then check the T4 (compressor outlet sensor) mounting, wiring and ohm resistance of the T4 sensor. The ohm resistance of T4 sensor should measure approximately 55k ohms at 77 degrees Fahrenheit. If the sensor is okay, replace the power control board (PCB).
Possible parts
T4 sensor, Power control board
F8
T5 sensor failure
Check/Repair
Disconnect power or unplug the water heater and then check the T5 (ambient temperature sensor) mounting, wiring and ohm resistance. The ohm resistance should measure approximately 10k ohms at 77 degrees Fahrenheit. If the sensor is okay, replace the power control board (PCB).
Possible parts
T5 sensor, Power control board
F9
Lower heating element failure
Check/Repair
Disconnect power or unplug the water heater and then check the lower heating element and wiring. Check the wiring and connections on the power control board (PCB) and lower heating element. Disconnect the wires from the lower heating element and measure the heating element for ohm resistance using a multimeter. The heating element should measures 12.8-18.75 ohms of resistance. If the lower element and wiring is okay, replace the power control board.
How-to help
Possible parts
Lower heating element, Power control board
F10
Upper heating element failure
Check/Repair
Disconnect power or unplug the water heater and then check the upper heating element and wiring. Check the wiring and connections on the power control board (PCB). Disconnect and measure the heating element for ohm resistance using a multimeter. The heating element should measure 12.8-18.75 ohms of resistance. If the upper element and wiring are okay, replace the power control board.
How-to help
Possible parts
Upper heating element, Power control board
Symptoms common to all water heaters
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Articles and videos common to all water heaters
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Source: https://www.searspartsdirect.com/diy/error-codes/water-heater-repair/1234627/ge-geospring-water-heater/0432
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