Booking today · Houston service windows 9–12 · 1–4 · 4–7 Independent GE specialists · Licensed & insured Mon–Fri 7:00 AM - 8:00 PM · Sat 8:00 AM - 6:00 PM
(713) 547-5545 Arrange a Repair
Error code · Water Heater

GE GeoSpring PF/PH Code F16, F17: No Hot Water at Mixing Valve Outlet

F16 and F17 on GE Profile GeoSpring PF and PH series water heaters (2025 and newer) report no hot water at the mixing valve outlet. On models with an electronic mixing valve, the outlet thermal cutoff…

Medium · inspection needed
Arrange a Repair(713) 547-5545
Code
F16, F17
Appliance
Water Heater
Brand
GE
Warranty
30-day workmanship

What F16, F17 means

F16 and F17 on GE Profile GeoSpring PF and PH series water heaters (2025 and newer) report no hot water at the mixing valve outlet. On models with an electronic mixing valve, the outlet thermal cutoff has tripped. On models without one, a jumper wire is missing. F16 applies only to models with the integrated mixing valve. The result is hot water that never arrives at the faucets even though the tank itself may be warm.

Common causes of F16, F17

  • Tripped thermal cutoff at the mixing valve outlet
  • Missing or loose jumper wire on non-mixing-valve models
  • Mixing valve wiring connection
  • Control board input for the outlet circuit
✓ One safe check you can try

1. Note the code and model number and check whether your unit has a mixing valve on the outlet. 2. Check the breaker is on. 3. Do not open covers or reach for the jumper or wiring. 4. Be careful with any hot water at the tank and call us.

! Why to stop there
  • Which of the two causes applies depends on the model, so we look at the unit first.
  • If the cutoff tripped, we also need to learn why it tripped.
  • We test before replacing anything and quote the price first.
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.
→Same appliance

Other Water Heater codes

F15GE GeoSpring First-Generation GEH50DEED Code F15: DataFlash memory error Attention! Tank not filled!GE GeoSpring GEH50DNSRSA Message "Attention! Tank not filled!": Fill before power 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
F16, F17F16, F17 questions
Does my unit have a mixing valve?

Only some PF and PH models do. If you are not sure, read us the model number from the rating label and we will tell you before we arrive which of the two situations applies.

Why is the tank warm but the faucets cold?

The code describes the outlet circuit, not the tank itself. With the cutoff open or the jumper missing, the control treats the outlet as unavailable, so hot water is held back.

Is it safe to keep using the unit?

We would rather you leave it off and call, since a tripped cutoff means something got too hot or a wiring link is missing. We inspect it and give you a written price.

Book a visit

Still seeing F16, F17?

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

(713) 547-5545