🚿Water Heater

5-FLASH

Bradford White · RG240T6N eF Series

Bradford White RG240T6N eF Series 5-FLASH Error Fix: Temperature Sensor Failure

The ICON System LED blinks five times, indicating the temperature sensor (thermistor) inside the gas control valve is reading an open or short circuit. The gas valve cannot monitor water temperature and will not allow the burner to fire as a safety precaution. The thermistor is built into the gas control valve on Bradford White ICON System models — it is not a separately replaceable part. If the 5-flash code appears, the entire gas control valve assembly must be replaced. Before replacing, check the wiring connector on the gas valve for loose or corroded pins.

critical2 fixes available✨ Free fix available

Quick Answer

Error 5-FLASH on the Bradford White RG240T6N eF Series means: Temperature Sensor Failure. The top-ranked community fix is “Replace Entire Gas Control Valve Assembly” (hard difficulty, ~90 min, DIY cost: $150-$250). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · water heater

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many water heater repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $350-$500.

Other Bradford White Models with Error 5-FLASH

D-W-2-75T6BN Ultra Low NOx

water_heater · 2 fixes

MI50S6BN 50 Gallon 76,000 BTU Magnum Series Commercial Natural Gas Water Heater

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MI50T6FBN 50 Gallon 40,000 BTU Natural Gas Magnum Commercial Water Heater

water_heater · 2 fixes

RG250T6N 50 Gallon 40,000 BTU 0.67 EF Defender Safety System Gas Water Heater

water_heater · 2 fixes

RG2PV40T6N 40 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System

water_heater · 2 fixes

RG2PV50H6N 50 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System

water_heater · 2 fixes

Other Bradford White RG240T6N eF Series Error Codes

1-FLASH

Normal Operation — System OK

2 fixes

2-FLASH

Thermopile Voltage Low

2 fixes

4-FLASH

High Temperature / ECO Trip

2 fixes

7-FLASH

Gas Control Valve Electronics Failure

2 fixes

8-FLASH

Power Interruption / Loss of Pilot Signal

2 fixes

LED-OFF

No Power to Gas Control — LED Dark

2 fixes

MECH-ANODE

Anode Rod Depleted — Rotten Egg Smell or Corrosion

2 fixes

MECH-DIP-TUBE

Broken Dip Tube — Lukewarm Water

2 fixes

People Also Ask About Bradford White RG240T6N eF Series Error 5-FLASH

What does error code 5-FLASH mean on a Bradford White RG240T6N eF Series?

Error code 5-FLASH on the Bradford White RG240T6N eF Series means: Temperature Sensor Failure. The ICON System LED blinks five times, indicating the temperature sensor (thermistor) inside the gas control valve is reading an open or short circuit. The gas valve cannot monitor water temperature and will not allow the burner to fire as a safety precaution. The thermistor is built into the gas control valve on Bradford White ICON System models — it is not a separately replaceable part. If the 5-flash code appears, the entire gas control valve assembly must be replaced. Before replacing, check the wiring connector on the gas valve for loose or corroded pins.

How do I fix error code 5-FLASH on my Bradford White RG240T6N eF Series?

The most successful fix is "Replace Entire Gas Control Valve Assembly" (hard difficulty, ~90 minutes). Estimated DIY cost: $150-$250. HomeMD has 2 community-ranked fixes for this error.

Is error code 5-FLASH on a Bradford White RG240T6N eF Series serious?

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Bradford White RG240T6N eF Series error 5-FLASH myself?

Yes — the top-ranked community fix ("Replace Entire Gas Control Valve Assembly") is rated hard difficulty and takes about 90 minutes. Tools needed: Adjustable wrench, Multimeter, Pipe thread sealant, Flashlight.

How much does it cost to repair Bradford White RG240T6N eF Series error 5-FLASH?

DIY cost: $150-$250. Professional repair typically costs $350-$500. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Bradford White RG240T6N eF Series have?

The Bradford White RG240T6N eF Series has 8 other known error codes, including: 1-FLASH (Normal Operation — System OK), 2-FLASH (Thermopile Voltage Low), 4-FLASH (High Temperature / ECO Trip), 7-FLASH (Gas Control Valve Electronics Failure), 8-FLASH (Power Interruption / Loss of Pilot Signal), and 3 more.

Which other Bradford White models have the 5-FLASH error?

Error code 5-FLASH also appears on 6 other Bradford White models: D-W-2-75T6BN Ultra Low NOx, MI50S6BN 50 Gallon 76,000 BTU Magnum Series Commercial Natural Gas Water Heater, MI50T6FBN 50 Gallon 40,000 BTU Natural Gas Magnum Commercial Water Heater, RG250T6N 50 Gallon 40,000 BTU 0.67 EF Defender Safety System Gas Water Heater, RG2PV40T6N 40 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System, RG2PV50H6N 50 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Bradford White RG240T6N eF Series have?

The Bradford White RG240T6N eF Series has 8 other known error codes:

1-FLASH — Normal Operation — System OK (2 fixes)
2-FLASH — Thermopile Voltage Low (2 fixes)
4-FLASH — High Temperature / ECO Trip (2 fixes)
7-FLASH — Gas Control Valve Electronics Failure (2 fixes)
8-FLASH — Power Interruption / Loss of Pilot Signal (2 fixes)
LED-OFF — No Power to Gas Control — LED Dark (2 fixes)
MECH-ANODE — Anode Rod Depleted — Rotten Egg Smell or Corrosion (2 fixes)
MECH-DIP-TUBE — Broken Dip Tube — Lukewarm Water (2 fixes)

Which other Bradford White models have the 5-FLASH error?

Error code 5-FLASH also appears on 6 other Bradford White models:

D-W-2-75T6BN Ultra Low NOx (water heater) · 2 fixes
MI50S6BN 50 Gallon 76,000 BTU Magnum Series Commercial Natural Gas Water Heater (water heater) · 2 fixes
MI50T6FBN 50 Gallon 40,000 BTU Natural Gas Magnum Commercial Water Heater (water heater) · 2 fixes
RG250T6N 50 Gallon 40,000 BTU 0.67 EF Defender Safety System Gas Water Heater (water heater) · 2 fixes
RG2PV40T6N 40 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System (water heater) · 2 fixes
RG2PV50H6N 50 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System (water heater) · 2 fixes

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