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Adjust thermostat on water heater
Resources:
How to replace electric water heater thermostat
How to replace gas control thermostat
How to increase amount of hot water

Average bath-shower temperature 104
Save 3-5% operating cost for adjusting 10 lower
Gas
Cautions: Use adequate lighting. No candles, open flame or smoking. Inspect for leak, rust, soot, missing parts. If you smell gas, leave building, and call gas company. Minor gas leak, shut off gas to heater, and call gas company. Gassy smell but no gas leak, clean soot from flueway. How to clean flue   Troubleshoot gas water heater
coleman flashlightBuy
Flashlights at Amazon
Headlamps at Amazon
Safety Equipment for Professionals

Electric
Cautions: Use adequate lighting.  Inspect for leak, rust. Never touch wet water heater, or water that was wet.
For safety, turn off 30 Amp circuit breaker. Troubleshoot electric water heater
How to check if power is off
Gas Electric


Identify gas valve

Do not turn off gas unless smell of gas is present

coleman flashlight

Use Flat & phillips screwdrivers
+ Flashlight

Resources:
How to test if electricity is OFF
Troubleshoot leaking water heater

Robert Shaw Unitrol Mechanical gas control valve thermostat


Troubleshoot Robert Shaw gas control

Line up dial with notch at top.

Some gas valves rotate opposite direction see

water heater thermostats Electric thermostat

Remove covers (save screws)
Pull out insulation

<>Top thermostat is larger

<>Bottom thermostat is smaller

Don't touch or move wires

 Insulation & cover must be put back when finished or thermostat will not read correct temp


Calibrate Gas control valve:
Calibration on Gas valve is approximate by 5-8F.
If calibration is far off, then rotate dial so temp at faucet is good.

If temperatures fluctuate, then plumbing is first suspect. Check temperature of water at TP valve and at water heater drain valve. Check for stacking or crossover

If plumbing checks out, gas control might be bad.
If temperatures inside tank drop too low before water heater turns ON, then gas valve is bad.




120 is good for most homes
water heater thermostats
Test upper thermostat
Adjust temperature using screwdriver
How to replace thermostat
Therm-o-disc thermostats.
Rated 120, 208, 277, 480 volt
90-150F range.
ECO trip 170F +/-5F
Different models can have higher range, but numbers for temperature are different.

Use flat tip screwdriver to set upper and lower thermostats to 120 this temperature is good for most homes.

For more hot water, set upper thermostat 5-10 higher.

All water heater thermostat settings are approximate > test result at faucet with thermometer.

Resources:
Ways to Increase amount of hot water
Wire thermostat
Troubleshoot thermostat
Replace thermostat

Buy:
Water heater thermostats
Vacation <> tank is heated to about 50 to prevent freezing

Use this setting to save money when hot water is not needed.

Resource
Gas water heater timers

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Aprom thermostat
Rated 120, 208, 277, 480 volt
110-150F range.
ECO trip 180F +/-5F
Different models can have different range, but letters for temperature are different.

If 120 leaves you short of hot water, the tank could have sediment build-up
Resources:
How to clean sediment out water heater
How to flush water heater/ steps
gas valve setting White Rodgers gas control valve thermostat
Line up with small triangle located at 1 PM position.

Troubleshoot White Rodgers gas control


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Aprom thermostat for small under-counter or point of use water heater.
Resources:
How to install point-of-use water heater
Burned thermostat
Burned thermostat
Buy:
Water heater thermostats
Resources:
How to replace thermostats
Test thermostats
Wire water heater thermostats
Troubleshoot electric water heater
White Rogers thermostat White Rodgers Power Vent thermostat

Rotate dial until mark on dial lines up with temperature

Troubleshoot White Rodgers gas control
electric water heater in basement Step 4: Finish electric

Put covers on <> make sure insulation is put back or cool air will cause thermostat to misread temp <> put metal covers on <> pick up tools <> turn on circuit breaker

Resources:
Inspect for water on floor or leaking pipes Troubleshoot leak
water heater thermostat Use cooking thermometer to check temperature at each faucet.
If one faucet is not receiving same temperature, pipes may be clogged, or faucet cartridge is bad
Resources:
Crossover
How to light water heater
Low hot water pressure
Robert Shaw models
Whirlpool self diagnostic control      
Resource
Whirlpool and Craftmaster Energy Smart

Choose 4 different energy settings plus adjust temperature using selector.

Adjust thermostat from 80 to 150
Thermostat probe or sensor is immersed in water inside tank.
Water temperature around the thermostat probe can drop 15-25 before main burner is activated.

Thermostat probe is same-similar for all types of gas water heater control valves.

The temperature sensor (copper tube) contains two things: "the ECO (energy cut off), and a temperature probe thermistor.
Thermistors are thermally (heat) sensitive variable resistors. A change in water temperature changes the resistance (measured in ohms) of the thermistor. The gas Gas control valve thermostatcontrol valve interprets change in resistance as a change in temperature and uses information to activate and deactivate call for heat."

 ECO (energy cut off) will trip if water inside residential tank exceeds 180-188F high limit. This will cause thermostat to shut off gas to burner.

 ECO is typically single-use and gas control must be replaced. The new electronic gas control, such as Intellivent control valve used on some power vent models, and the Honeywell electronic gas control valves are resettable after overheat event. Models vary, and reset is not possible for every condition.
Resources:
How water heater thermostat work
Basic parts and operation of gas water heater
Gas control thermostat Intellivent gas control valve thermostat.
White Rodgers Intellivent is used on power vent models
Range 80-150, Error flashes if water temperature reaches 160

Mechanical thermostat are increasingly replaced by electronic thermostats, allowing error and diagnostic codes. Thermostat probe is same design as mechanical thermostats.
Gas control thermostat Honeywell atmospheric gas control valve thermostat.
This style Honeywell is used on atmospheric vent models
Range 55-160, ECO trip at 180

Gas control thermostat Honeywell power vent gas control valve thermostat.
This style Honeywell is used on power vent models
Range 90-160, ECO trip at 188

Note: the TCO (thermal cut off) located on front of combustion chamber is rated 188. If water temperature inside tank exceeds TCO limit, the ECO located inside gas control valve will trip and shut down fuel to burner, then issue error sequence.


Honeywell atmospheric vent gas control
Icon gas valve

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Reliance/ Honeywell gas control
American / Honeywell gas control
Kenmore water heater gas valve
Craftmaster/ Whirlpool
Bradford White
AO Smith
Resources:
Troubleshoot Honeywell gas control valve
Honeywell power vent gas control
Honeywell gas valve

Buy
Example Honeywell gas control valve at Amazon
Reliance NG at Amazon
Resources:
Troubleshoot Honeywell gas control valve
Troubleshoot power vent water heater
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Adjust temp on Honeywell gas valve
Icon gas control valve error codes
To reset gas control, rotate dial to OFF, wait 10 minutes for gas to clear. Then relight.
How to light water heater
How to light water heater/ pdf
How to light Whirlpool energy smart
Bradford White Service manual

More Bradford White service manuals
How to replace gas control valves
How to test gas control valve
How to light Honeywell gas control

How to install gas water heater

Replacement
How to test & replace Honeywell gas control valve
How to replace Honeywell gas control valve
Buy
Honeywell gas control at Amazon
Honeywell gas control at Amazon
American / Honeywell gas control at Amazon
Honeywell gas valve for propane
Honeywell natural gas valve
Kenmore water heater gas valve
Whirlpool Gas control valve
Honeywell/Whirlpool gas control valve thermostat settings, error codes
Temperature setting image
How to light water heater
Whirlpool energy smart manual
Manuals at Whirlpool

Troubleshoot gas water heater
Honeywell gas valve
Adjust temperature/ error codes on Honeywell
Range 90 to 156
Hot is 120 F // Very Hot 156
ECO limit 199 F
How to light Honeywell gas valve
Dampered Fury gas troubleshooting codes
Induced draft troubleshoot codes
Error codes
Error codes2
Error codes
Icon gas valve error codes
Service manual
Bradford White service manual 2
Test gas control/ from BW service manual
Power vent water heater issues
Sequence of operation
How to clean burner
Replacement
How to replace water heater gas valve
Buy
Example Honeywell gas control valve at Amazon
Kenmore gas valve
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Temperature settings
How to light water heater/ pdf
Full service manual

Replacement
How to test & replace Honeywell gas control valve
How to replace Honeywell gas control valve
Buy
Honeywell gas control at Amazon
Honeywell gas control at Amazon
Honeywell Smart Valve AO Smith
Honeywell Smart Valve
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Temperature settings and features
Smart valve error codes
Smart Valve service manual

Robert Shaw models
Robert Shaw troubleshooting/ pdf
General troubleshoot/ pdf
General troubleshoot manual /pdf
How to light water heater/pdf
Magnet testing
Test thermocouple
Gas valve testing
Recalibrate gas control/ pdf
How to light gas water heater
Replacement
How to replace water heater gas valve
Buy
Gas water heater thermostats at Amazon
SIT gas control valve for water heater
SIT gas control valve for water heater
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How to light and set temperature SIT gas control
Robert shaw gas control valve
Robert Shaw 120Volt input gas control valve
Wiper Control and Gas Valve assembly
Triangle pointed upward is 120 degrees F
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Error Codes and troubleshoot
Guardian power vent Robert Shaw error code
Rheem parts list
American power flex parts
General manual with lighting instructions
Replace water heater gas control and FV
Check pressure switch, blower, gas control
Sequence of operation
How to light water heater
Replacement/ Buy
Rheem wiper SP20123A thermostat KIT
Wiper SP20123B valve/ no thermostat
To reset: turn the red control knob on and off 6 times within 30 seconds to reset the board.
White Rogers thermostat
Troubleshooting/ pdf

How to light gas water heater
How to replace water heater gas valve
gas valve setting
Service manual
Service manual 2
Service manual 3
How to light water heater/pdf
General troubleshoot manual /pdf
White Rodgers gas control valve replacement pdf
Power vent water heater issues
Magnet testing
Test thermocouple
Gas valve testing
How to light gas water heater
White Rodgers NG replace, install, set temp
Replacement
How to replace water heater gas valve
Buy
Gas water heater thermostats at Amazon
Rheem gas control valve at Amazon
Remove gas valve
How to replace gas control thermostat
How to replace gas control
Replace gas control
Operation and safety
How to replace Honeywell gas control
Buy universal gas control wrench
Or make a wrench out of plywood

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Instructions
Adjust temperature rheem tankless
How to set Rheem tankless temperature 2012
Bosch ariston thermostat
Bosch Ariston under-counter water heater thermostat
How to install and wire under counter water heater
Ariston manual with part numbers
Geo spring control panel
GE Geo Spring hybrid manual
Review GE heat pump water heater

Kenmore with power anode rod
How to light Effex water heater
Review Kenmore

Whirlpool energy smart electric/ Smart Grid
Water heater remote
Water heater remote
Ruud heat pump water heater

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State hybrid electric manual

How to install tank-type gas water heater
How to troubleshoot Rheem tankless

How to troubleshoot Bosch tankless

Troubleshoot electric water heater

Troubleshoot gas water heater



How to troubleshoot electric water heater
How to replace element and clean out tank
How to remove rusted element
Water heater will not drain
Stacking
copper pipe
  

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Buy:
Water heater thermostats at Amazon
Resources
How to wire water heater thermostats

How to replace water heater thermostats

How water heater thermostats work

How electric water heater works
TP valve           

Water leak around bottom of tank <> even minor leak <> means water heater needs service
Do it yourself
Do it yourself water heater repairs/info

Maintain efficiency
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Intermatic parts
Intermatic trippers and parts
 Dayton Westek TE06WHBWoods Power pack
Wire T1906 and T1905 timers
  
Wire T-101 T103 T104 timers
Paragon timers and manuals
Tork TU universal timer
Westek box timers
Wire EH40 and WH40 timers
  
Tork timers and manuals
Tork TU universal timer
Troubleshoot Intermatic
Sylvania timers
Sprinkler timers Pool timers and manuals
Intermatic T104P201

GE box timers
Wire GE 15207 timer

How to set analog  timers
Intermatic GM series
Intermatic GM series

Gas and electric water heaters Support the economy:
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Resources:
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How to install electric water heater
Troubleshoot gas water heater
Troubleshoot electric water heater
Point of use water heaters
Gas and electric water heaters Industrial electric at Amazon

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Tekton automotive
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Saws and saw blades
box timers Compare box timers

Control water heater w/ Z-wave
Intermatic control centers Control centers:
+ manuals and parts


All control centers and parts

Including Z-wave
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Compare programmable timers
Compare countdown timers

Off delay
On delay
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Modules
Din rail
Woods
Control water heater
Low voltage power packs Recirculation systems

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