Model reference

Bradford White RG150S*(N,X)

Water Heater

1 document11 error codes

Available documentation

Service Manual

Flammable Vapor Ignition Resistant Water Heaters SERVICE MANUAL Troubleshooting Guide and Instructions for Service44 pg
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1 flash every 4 seconds (green) on my Bradford White RG150S*(N,X)

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Pilot is lit and main burner is off;

From Service Manual 363366, p.18:

1.Access service mode to confirm the active fault code and read stored error history.

2.Disconnect the sensor and measure resistance. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens. A reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

Error codes (11)

CodeMeaning

1 flash every 4 seconds (green)Pilot is lit and main burner is off; gas valve is powered and waiting for…1 flash every second (green)Main valve is open and main burner is lit; thermostat is calling for heat and…2 flashesLow thermopile voltage; main burner not lit 3 flashesInsufficient water heating; thermal sensor out of calibration or faulty gas…4 flashesTemperature cut-out limit reached causing shutdown; excessive tank temperature 5 flashesElectronics, sensor, or gas valve fault detected. Temperature sensor fault 6 flashesWater leak detected by accessory module; excessive amount of water in drain…7 flashesGas control electronic fault detected 8 flashesStanding pilot remains on while setpoint knob is in OFF position; pilot valve…No LEDGas control is not powered; pilot assembly is not lit Solid ON (green/red)Control is in shutdown/OFF mode; setpoint knob was recently turned to OFF…

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