Tag: water-heater

All the articles with the tag "water-heater".

• Navien E027 Error Code - Causes & Fix

  30 May, 2026

  E027 means abnormal air pressure sensor activity. Most often caused by blocked venting or a dirty air filter. Check airflow first.

• Navien E016 Error Code - Causes & Fix

  30 May, 2026

  E016 means heat exchanger overheat protection. Most common fix: clean the inlet filter and check for scale buildup in the exchanger.

• Navien Tankless E013 Error Code - Causes & Fix

  30 May, 2026

  E013 on Navien tankless means abnormal pump operation. Most common fix: check pump wiring and connectors, then replace the pump if faulty.

• Navien E011 Error Code - Causes & Fix

  30 May, 2026

  E011 on Navien tankless means high water pressure or a faulty pressure sensor. Most often fixed by replacing the water pressure sensor.

• Navien E010 Error Code - Causes & Fix

  30 May, 2026

  E010 signals abnormal air pressure or airflow fault in the combustion system. Clean the air filter and check vents for blockages first.

• Navien E008 Error Code - Causes & Fix

  30 May, 2026

  E008 means the outlet thermistor circuit is shorted. The most common fix is replacing the outlet temperature sensor or its wiring.

• Navien E007 Error Code - Causes & Fix

  30 May, 2026

  E007 means the hot water outlet thermistor circuit is open. Most likely fix: replace the outlet temperature sensor or repair its wiring.

• Navien E006 Error Code - Causes & Fix

  30 May, 2026

  E006 means the heating supply outlet thermistor is shorted. Most units need a new thermistor after checking wiring and connectors.

• Navien E005 Error Code - Causes & Fix

  30 May, 2026

  E005 means the flow sensor isn't spinning properly. Most likely fix: clear debris from the sensor or replace the flow sensor assembly.

• Navien E004 Error Code - Causes & Fix

  30 May, 2026

  E004 means false flame detection. Check for vent blockages and clean the flame rod first-most common fix for this safety lockout.

• Navien E002 Error Code - Causes & Fix

  30 May, 2026

  E002 means low water pressure or insufficient supply to your Navien tankless heater. Check that the inlet valve is fully open first.

• Navien E001 Error Code - Causes & Fix

  30 May, 2026

  E001 on Navien tankless heaters usually signals a flame detection or ignition fault. Clean the flame rod and check gas supply first.

• Bradford White 3 Flashes - Causes & Fix

  30 May, 2026

  3 flashes on a Bradford White gas water heater means a thermal well sensor or gas control fault. Most often the thermal well is damaged.

• Bradford White 5 Flashes Error Code - Causes & Fix

  30 May, 2026

  5 flashes on Bradford White gas water heaters means false pilot flame present. The pilot valve is stuck open and you need a new gas control.

• Navien E109 Error - Causes & Fix

  30 May, 2026

  E109 signals a fan or air-intake fault in your Navien tankless water heater. Most often fixed by cleaning the air filter or fan area.

• A.O. Smith E2 Error Code - Causes & Fix

  30 May, 2026

  E2 means over-temperature shutdown on A.O. Smith electric tankless heaters. Most common fix: replace the thermistor sensor.

• A.O. Smith E1 Error Code - Causes & Fix

  30 May, 2026

  E1 on an A.O. Smith tankless water heater means high-temperature shutdown. Most often caused by a faulty sensor or thermostat.

• Bosch E9 Error Code - Causes & Fix

  30 May, 2026

  E9 means the overheat limiter on your Bosch tankless water heater has tripped. Most often caused by scale buildup in the heat exchanger.

• Rinnai Error Code 25 - Causes & Fix

  30 May, 2026

  Rinnai error code 25 means condensate backup has tripped the safety switch. Clear blocked drain lines or check the condensate pump.

• Rheem Tankless Water Heater Error 76 - Causes & Fix

  30 May, 2026

  Error 76 means communication failure between your Rheem tankless heater and its remote control. Check wiring connections first.

• Bosch EA Error Code - Causes & Fix

  30 May, 2026

  EA means your Bosch tankless water heater fails to ignite. Most often it's a gas supply problem, low pressure, or air in the line.

• Noritz Error Code 11 - Ignition Failure Causes & Fix

  30 May, 2026

  Code 11 means ignition failure: the burner won't light or lights briefly then fails flame detection. Clean the ignition rod first.

• Rinnai Code 12 - Flame Failure & Lost Flame Fix

  30 May, 2026

  Code 12 means flame failure or lost flame. Most often it's low gas pressure, a dirty flame rod, or a venting problem.

• Rinnai Error Code 11 - Causes & Fix

  30 May, 2026

  Code 11 means ignition failure: the burner won't light. Most common fix is cleaning the flame rod and igniter or checking gas supply.