How much does it cost to replace a thermocouple on a gas water heater?
Thermocouple – $20 to $150 The thermocouple is an apparatus that senses whether the pilot light is lit and triggers the gas control valve. Repairs typically cost about $150 to have it done professionally, though a new thermocouple itself only costs about $20 on average.
How do you change the thermocouple on a water heater?
Start by reconnecting the pilot and burner supply tubes, as well as the thermocouple, to the gas control valve. Make sure the thermocouple is only a quarter turn more than hand-tight. If you have an electronic ignition, the Piezo igniter needs to be reconnected now too. Next, open the gas shut-off valve, then switch the gas control valve to “ON”.
What causes a gas water heater to shut off?
Thermocouple failure is a common problem with residential gas water heaters. The thermocouple is a thermoelectric device that shuts off the gas supply to the water heater if the pilot light goes out.
What happens when the thermocouple goes out on a gas heater?
The thermocouple generates a small amount of electrical current when it has been heated by the flame. This small amount of electric current keeps the pilot gas valve open. If the pilot light goes out, the electrical current stops and the gas valve closes. Simply put; no flame, no gas flow.
When does the pilot go out on a gas water heater?
The pilot in my gas water heater (Aquamax 205) has been going out sporadically over the last 2 weeks. Yesterday, I replaced the thermocouple with a universal thermocouple and cleaned out the dust and soot from the burner area.
How do you change a thermocouple in a hot water heater?
How to Replace a Hot Water Heater Thermocouple Step 1: Familiarize Yourself with Your Water Heater Step 2: Access the Thermocouple Step 3: Release the Thermocouple Step 4: Install Replacement Thermocouple Step 5: Re-insert Burner Unit Step 6: Test Water Heater and Finish
Do all water heaters have a thermocouple?
Not all gas water heaters have a thermocouple. Some newer models have an advanced temperature control system. Essentially, it is a microprocessor that constantly monitors and controls burner operation and maintains consistent and accurate water temperature levels.
What does the thermocouple do on my water heater?
The thermocouple is part of the pilot burner assembly and connects to the gas control valve on the outside of the water heater. It is a simple device that converts the heat from a burning flame into a small electrical current , allowing it to work like a switch to control the flow of gas from the gas supply valve .
Where is the thermocouple on a hot water heater?
The thermocouple is attached to the water heater at two locations. The first location is at the underside of the gas valve. The thermocouple looks like a bare copper wire with a fitting on the end.
