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AGE of WATER HEATERS
AIRBOUND HEAT SYSTEM REPAIRS
ALTERNATIVE HOT WATER SOURCES
ANODES & DIP TUBES on WATER HEATERS
ANTIFREEZE for BOILERS
ANTI SCALD VALVES
APPLIANCE EFFICIENCY RATINGS
AQUASTAT CONTROL Functions
BACKDRAFTING HEATING EQUIPMENT
BACKFLOW PREVENTER, HEATER WATER FEEDER
CARBON MONOXIDE - CO
CHECK VALVES, WATER SUPPLY
CHEMICAL CONTAMINANTS in WATER
CHIMNEY INSPECTION DIAGNOSIS REPAIR
CLOGGED SUPPLY PIPING
DEBRIS in WATER SUPPLY, Water Heater
DRAIN a WATER HEATER TANK
ELECTRIC WATER HEATERS
FLOODED HEATING EQUIPMENT REPAIR
FLOODED WATER HEATER REPAIR
GALVANIC SCALE & METAL CORROSION
GAS BURNER Flame & Noise Defects
GAS FIRED WATER HEATERS
GAS PIPING, VALVES, CONTROLS
HOT WATER SUPPLY
INDIRECT FIRED WATER HEATERS
MANUALS & PARTS GUIDES - HVAC
MIXING / ANTI-SCALD VALVES
NO HEAT - NO HOT WATER: HEATER DIAGNOSIS
NOISE / SOUND DIAGNOSIS & CURE
NOISE CONTROL for HEATING SYSTEMS
NOISE, PLUMBING CHECKLIST
NOISE, WATER HEATER
ODORS GASES SMELLS, DIAGNOSIS & CURE
ODORS IN WATER
PIPING IN buildings, Clogs Leaks Types
PLASTIC HEATER VENT
PLUMBING FIXTURES, KITCHEN, BATH
RELIEF VALVE LEAKS
RELIEF VALVES - Water Heaters
SCALE REMOVAL, WATER HEATERS
SEWER GAS ODORS
SOLAR HOT WATER HEATERS
SOOT on OIL FIRED HEATING EQUIPMENT
SPILL SWITCHES - Flue Gas Detection
TANKLESS WATER HEATERS
Temperature Pressure Relief Valves - Water Heaters
THERMOSTATS, WATER HEATER
TIMERS for ELECTRIC WATER HEATERS
WATER CONTAMINANT LEVELS
WATER HAMMER NOISE DIAGNOSE & CURE
WATER ODORS, CAUSE CURE
WATER PIPES, Clogs Leaks Types
WATER PRESSURE & FLOW MEASUREMENT
WATER PRESSURE LOSS DIAGNOSIS & REPAIR
WATER QUANTITY IMPROVEMENT
WATER SOFTENERS & CONDITIONERS
WINTERIZE A BUILDING
Electric water heater controls, switches, & valves: This article describes the location, function, and troubleshooting of key controls and parts in electric hot water heater operation. Additional hidden controls on an electric hot water heater include its thermostat, high temperature cutout. We address these under-the-covers water heater controls beginning at Electric Water Heater Repair Guide. The articles at this website will answer most questions about electrical water heaters as well as many other building plumbing system inspection or defect topics.
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But watch out: sometimes an electric water heater is installed as an additional or backup hot water source, so you'll also want to see if you have other hot water heating equipment installed, such as a Tankless Coil for Hot Water.
Electric Water Heater Controls Behind the Removable Cover Panels on the Heater
Frequently Asked Questions (FAQs) about the controls & switches found on electric water heaters
Question: hot water tank connected to my central heating system is used as an immersion heater
I have a hot water tank which is connected into my central heating system. In the summer
For a water heater that is used for both domestic hot water and heating, I'd suggest adding an automatic mixing valve right at the water heater hot water outlet line. The valve can be set to the desired domestic water temperature for washing and bathing; the valve works by mixing cold in with the outgoing hot.
Also take a look at ANTI SCALD VALVES
Question: water heater output is scalding even with our thermostats set to their lowest settings
With both thermastats set at the lowest setting the water is scalding hot. What is causing this? - Anon 8/12/11
Sounds like a bad thermostat control, or two of them. See
Question: lose pressure when turning on hot water
I have pressure inthe bath tub when the cold water is running, but lose some pressure when turning on the hot water - Aaron 3/12/12
Depending on several variables, particularly water piping layout and routing, in some buildings, turning on hot water will, by taking water off of a common cold supply line, cause a drop in cold pressure. Bosch warns of this problem in their installation instructions for their low pressure tankless water heaters, products sold currently mostly out of the U. S. but also sold in that country until about 2004.
Question: our water won't get hot
Water will not get hot when turn on hot water in house - Claude 11/29/12
Question: can I re-wire my water heater controls to convert from sequential to simultaneous operation?
I understand residential HW heaters are usually sequentially wired.
I agree in concept that one could perhaps change all of the electrical components on a given water heater: elements, controls, safety devices, thermostats &c. to convert from one type of water heater operation (sequential) to another (simultaneous) heater element operation, connecting the heater also to a properly wired and sized electrical circuit.
But frankly I would not take a chance on re-wiring a water heater to operate in any manner other than that specified by the manufacturer for that particular heater and model. Doing so could be unsafe. If you're admant about proceeding, start by giving the manufacturer of your heater a call, ask to speak with a technical engineer, and let us know what is her response.
Questions & answers or comments about the name, location, & function of all of the controls on an electric water heater.
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Technical Reviewers & References
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