mypros+
Error code reference

Bradford White Water Heater Error Code 1 flash every 4 seconds

Stand-by mode, waiting for call for heat (no fault); temperature demand is satisfied.

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 1 flash every 4 seconds error code actually means

This flashing pattern simply means your water heater is working normally and waiting for you to need hot water. The water in the tank is already at the temperature you set, so the burner is resting. There is nothing wrong with your unit.

Diagnostic procedure

The full 1 flash every 4 seconds 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
Normal operation. Adjust thermostat to desired temperature level if needed.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock 1 flash every 4 seconds procedure $9.95

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

Most common causes of 1 flash every 4 seconds

Ranked by how often they cause this code
  1. 1Temperature demand is satisfied
  2. 2Low hot water usage period
  3. 3Thermostat set too low
  4. 4Oversized unit for application

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 1 flash every 4 seconds

What does 1 flash every 4 seconds mean on a Bradford White water_heater?
This pattern is the standby indicator, meaning the unit is fully operational but not currently heating. The tank water has reached the set temperature, so the burner is idle. This is normal behavior and does not indicate any fault or problem with the unit.
Is it safe to use my Bradford White water heater when it shows 1 flash every 4 seconds?
Yes, this pattern indicates completely normal and safe operation. The unit is in standby mode and will automatically begin heating when hot water is drawn from the tank. There are no safety concerns associated with this flash pattern.
Will resetting my Bradford White water heater clear the 1 flash every 4 seconds pattern?
A reset is unnecessary and will not change anything meaningfully, since this pattern is not an error condition to be cleared. After a reset, the unit will return to the same standby flash pattern once the water temperature is satisfied again. Simply allow the unit to operate normally.
Do I need to fix anything when my Bradford White water heater shows 1 flash every 4 seconds?
No repair or service action is needed. This flash pattern confirms the control system is working correctly and the water is already at your desired temperature. If the hot water temperature at the tap is not to your preference, simply adjust the thermostat dial on the unit.
How much does it cost to address a 1 flash every 4 seconds code on a Bradford White water heater?
There is no cost involved because this is not a fault code. No parts, labor, or service call is required. If you want the water temperature adjusted, that is simply a matter of turning the thermostat dial on the unit, which costs nothing.

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

Get Started

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