Error code · Water Heater

GE GeoSpring GEH80DFEJ Code F19: Low line voltage

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Code: F19
Appliance: Water Heater
Brand: GE
Warranty: 30-day workmanship

What F19 means

F19 on 2014-2016 GE GeoSpring hybrid electric water heaters in the GEH50DEEJ, GEH50DFEJ, GEH80DEEJ and GEH80DFEJ series reports low line voltage while the unit is running. This differs from bAd linE, which is checked at power-up. F19 means the supply sagged during operation, for example when a large load starts elsewhere in the house. The unit may heat poorly or turn parts of itself off to protect the circuits, and the display shows F19.

Common causes of F19

Voltage sag when heavy loads start in the house
Loose or heated connections at the breaker or the unit
A weak breaker or undersized supply wiring
The control's voltage-sensing input

✓ One safe check you can try

1. Notice whether F19 appears when large appliances start, and tell us. 2. Look at the breaker without opening the panel and note whether it is tripped or feels warm. 3. Switch the heater off at the breaker if the panel feels hot. 4. Do not tighten or open any electrical connections yourself.

! Why to stop there

Low voltage can start in the utility feed, the house panel, the wiring to the heater or the heater itself.
We measure the supply under load, which tells us where to look.
The reading under load decides whether the problem is in the house or in the heater, and we explain which.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Water Heater codes

Heat Pump FailureGE GeoSpring GEH50DXSRGA Message "Heat Pump Failure": Heat pump section problem Water Heater FailureGE GeoSpring GEH50DNSRSA Message "Water Heater Failure": Electric side problem System FailureGE GeoSpring GEH50DXSRGA Message "System Failure": Immediate attention Wiring to unit incorrectGE GeoSpring GEH50DNSRSA Message "Wiring to unit incorrect. Must be 240V not 120V": Supply check EPGE GeoSpring GEH50DXSRGA Code EP: Energy price signal F5, F6, F7, F8GE GeoSpring First-Generation GEH50DEED Codes F5-F8: Sensor failures F9GE GeoSpring First-Generation GEH50DEED Code F9: Bottom element problem F10GE GeoSpring First-Generation GEH50DEED Code F10: Top element problem

F19F19 questions

How is F19 different from F12?

F12, shown as bAd linE, is a check at start-up. F19 shows up while the unit is running, so it often traces to a load changing elsewhere in the house or a connection that heats up.

Could my utility be the cause?

It is possible, but we check inside the house first. Loose connections and breaker problems are common and within our scope. If the issue lies outside the house, we tell you so you can contact the utility.

Is a warm breaker a concern?

Yes, it can indicate a poor connection. Turn the heater off at that breaker and let us inspect it before restoring power, because heat at a connection tends to get worse over time.

Book a visit

Still seeing F19?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 547-5545