mypros+
Error code reference

Norcold Refrigerator Error Code Flash 5

Flame detected at the burner when there should be none

Avg. service call
$285
National average. Trip fee plus diagnostic plus labor. Before parts.
MyPros+ 3-day pass
$9.95
Same diagnostic steps, on your phone. Start now.
You keep in your pocket
~$275
Even before you buy the part.
Skip the service call. Fix it yourself.
Full procedure unlocks instantly.
Get Started

What the Flash 5 error code actually means

Your Norcold refrigerator has detected a flame burning when it should not be, because the valve that controls the gas flow is stuck open and cannot fully shut off. This is a safety issue that means gas is reaching the burner at times it should not be. The refrigerator needs to be turned off and the gas supply disconnected until a technician can replace the faulty gas assembly.

Diagnostic procedure

The full Flash 5 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Replace the gas train assembly.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock Flash 5 procedure $9.95

Or subscribe: $29/month for unlimited access to all codes plus Max AI diagnostics.

Most common causes of Flash 5

Ranked by how often they cause this code
  1. 1Gas valve stuck open mechanically
  2. 2Debris or corrosion in the gas valve
  3. 3Flame sensor fault causing false detection
  4. 4Control board wiring issue

Most DIYers save hundreds by diagnosing before ordering parts.

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass

Questions people ask about Flash 5

What does Flash 5 mean on a Norcold refrigerator?
Flash 5 means the refrigerator's control board has detected a flame at the burner during a period when no flame should be present. This fault points to a gas valve that is mechanically stuck open, allowing gas to flow and burn outside of a normal heating cycle. It is a serious fault that requires the gas supply to be shut off and the gas train assembly to be replaced.
Is Flash 5 on a Norcold refrigerator dangerous?
Yes, Flash 5 represents a potentially dangerous condition. A gas valve stuck open means gas is flowing to the burner when it should not be, which can result in uncontrolled combustion. You should shut off the refrigerator and close the gas supply valve immediately until the gas train assembly is replaced by a qualified technician.
How much does it cost to repair a Norcold refrigerator with a Flash 5 error?
The cost to repair a Flash 5 fault typically involves the price of a replacement gas train assembly plus labor for a qualified technician. Parts costs can range from roughly $150 to $400 or more depending on the specific Norcold model, and labor charges will vary by location and service provider. Getting a quote from an RV appliance service center before proceeding is recommended.
Can I fix Flash 5 on my Norcold refrigerator myself?
The repair involves replacing the gas train assembly, which includes the gas valve and associated gas-supply components. Because the work involves the gas system, it should only be performed by a qualified technician familiar with LP or natural gas appliances. Attempting this repair without proper training and tools creates serious safety risks.
Will resetting the Norcold refrigerator clear a Flash 5 error?
Resetting the unit will not resolve Flash 5. The fault is caused by a mechanical failure of the gas valve, which remains stuck open regardless of any control board reset. The error will return as soon as the board detects the unwanted flame again. The gas train assembly must be physically replaced to correct the underlying problem.

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass