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33

LED STATUS

PROBLEM

CORRECTIVE ACTION

0 FLASHES (LED NOT LIT)

Pilot light is not lit or Thermopile 
has not yet reached normal 
operating temperature.

Turn Gas Control Valve/Thermostat knob to OFF. Wait 
10 minutes, then attempt to relight Pilot by following 
the lighting instructions on the water heater’s label. 
Until the Thermopile reaches its normal operating 
temperature, the Status Light will not blink, even if the 
Pilot is lit. It may take up to 90 seconds of continuous 
Pilot operation before the Thermopile reaches normal 
operating temperature and the Status Light starts to 
blink. 

If the Status Light does not blink after three lighting 
attempts, check to make sure unit is getting gas. 
Remove the outer door. Press reset button. Replace 
outer door. Turn Gas Control Valve/Thermostat knob 
to OFF. Wait 10 minutes, then attempt to light Pilot by 
following the lighting instructions on the water heater’s 
label. Look through the view port for the Pilot flame. If 
Pilot is not visible, the spark igniter or gas supply to the 
Pilot should be checked.

If the Pilot is visible and the Status Light does not blink 
after 90 seconds of continuous Pilot operation, the Pilot 
flame may not be heating the Thermopile sufficiently 
(weak Pilot), the Thermopile may be defective, or wiring 
connectors may be loose.

NOTE: If the water heater has been operating but 
has stopped and will not re-light, check the flame-
arrestor for signs of high temperature (blue or black) 
discoloration indicating a flammable vapor incident. If 
you suspect a flammable vapor incident has occurred, 
do not use this appliance. Immediately call a qualified 
technician to inspect the appliance. Water heaters 
subjected to a flammable vapors ignition will require 
replacement of the entire water heater. 

RED LIGHT ON (SOLID)

Pilot light was recently 
extinguished and the Thermopile 
is cooling down.

Turn Gas Control Valve/Thermostat knob to OFF. Wait 
10 minutes for the Thermopile to cool, then attempt 
to relight Pilot by following the lighting instructions on 
the water heater’s label. 

NOTE: This gas control 

valve/thermostat has built-in circuitry that requires 
waiting 10 minutes between lighting attempts. 

Until the Thermopile reaches its normal operating 
temperature, the Status Light will not blink, even if the 
Pilot is lit. It may take up to 90 seconds of continuous 
Pilot operation before the Thermopile reaches normal 
operating temperature and the Status Light starts to 
blink.

1 FLASH (EVERY 3 SECONDS)

Normal operation.

No corrective action necessary.

2 FLASHES

Pilot is lit but the Thermopile is 
not producing the required output 
voltage.

Turn Gas Control Valve/Thermostat knob to OFF. The 
Thermopile is probably defective, but loose wiring 
connections or a weak Pilot flame can also cause this 
symptom.

STATUS LIGHT AND DIAGNOSTIC CODE TROUBLESHOOTING CHART

Содержание GAS WATER HEATER

Страница 1: ...h any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier ca...

Страница 2: ...Pipe Installation 17 Combination Space Heating Potable Water System 17 18 Solar Installation 18 Important Information About this Water Heater 19 Operating Your Water Heater 20 26 Lighting Instruction...

Страница 3: ...ty equivalent to a licensed tradesman in the fields of plumbing air supply venting and gas supply including a thorough understanding of the requirements of the National Fuel Gas Code as it relates to...

Страница 4: ...period of non use Read instruction manual before installing using or servicing water heater Fire or Explosion Harzard Hydrogen gas can be produced in a hot water system after a period of non use gener...

Страница 5: ...tat T Drain Valve U Manifold Burner Assembly V Flue W Metal Drain Pan X Piezo Igniter Y Base Ring Filter ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMERS TO VENT TERMINATION ON ROOF A B D F G H I W V...

Страница 6: ...future users of this water heater will need it for future reference Service to the FVIR System should only be performed by a qualified technician Examples of a qualified technician include licensed pl...

Страница 7: ...the area of the water heater leave the area immediately and call the fire department from a neighbor s home Do not attempt to clean the spill until all ignition sources have been extinguished Fire or...

Страница 8: ...ice used in conjunction with a piped drain pan These devices are available from some plumbing supply wholesalers and retailers and detect and react to leakage in various ways Sensors mounted in the dr...

Страница 9: ...an L P gas supply Do not connect an L P gas water heater to a natural gas supply Failure to follow these instructions can result in death explosion or carbon monoxide poisoning Explosion Hazard Gas R...

Страница 10: ...in the occurrence of a leak in the system the gas will settle at floor level Basements crawl spaces closets and areas below ground level will serve as pockets for the accumulation of gas Before lighti...

Страница 11: ...y a qualified technician using the installation instructions Examples of a qualified technican include gas technicians authorized gas company personel and authorized service persons Failure to so do c...

Страница 12: ...typical examples of each method Louvers and Grilles In calculating free area for ventilation and combustion air supply openings consideration must be given to the blocking effect of protection louver...

Страница 13: ...y CSA International this certification applies to the vent damper device only and does not mean they are certified for use on this water heater U L recognized fuel gas and carbon monoxide CO detectors...

Страница 14: ...y is clear and free of obstructions The chimney must be cleaned if previously used for venting solid fuel appliances or fireplaces Also consult local and state codes for proper chimney sizing and appl...

Страница 15: ...losed System Thermal Expansion 5 Install a shut off valve in the cold water inlet line It should be located close to the water heater and be easily accessible Know the location of this valve and how t...

Страница 16: ...y cause excessive restriction to water flow is not recommended Use only 95 5 tin antimony or other equivalent solder Any lead based solder must not be used Piping that has been treated with chromates...

Страница 17: ...tions If this water heater is to be used to supply both space heating and domestic potable drinking water the instructions listed below must be followed Be sure to follow the manual s shipped with the...

Страница 18: ...water heating appliances when used to supply potable water Some jurisdictions may require a backflow preventer in the incoming cold water line This may cause the temperature and pressure relief valve...

Страница 19: ...t contain negative pressure producing devices such as exhaust fans fireplaces etc Is there a furnace air handler in the same room space as the water heater If so has a return air duct system been atta...

Страница 20: ...e outer door If the Pilot Does Not Light 1 Wait 10 minutes before another lighting attempt If the pilot does not light the Igniter may not be sparking or the unit may not be getting gas or for a new i...

Страница 21: ...hnician or your gas supplier DANGER Hotter water increases the risk of scald injury Consult the instruction manual before changing temperature Refer to the Lighting Instructions in the Installation Ma...

Страница 22: ...49 C 60 C is recommended by most dishwasher manufacturers The thermostat is adjusted to the pilot position when it is shipped from the factory Water temperature can be regulated by moving the temperat...

Страница 23: ...the heated water may vary Operating Modes and Settings Standard Mode The controller adjusts the water heater to maintain the temperature set by the user Vacation Setting The Vacation setting VAC sets...

Страница 24: ...ater conditioning company to successfully eliminate all water odor problems Artificially softened water is exceedingly corrosive because the process substitutes sodium ions for magnesium and calcium i...

Страница 25: ...water heater drain valve and allow all of the water to drain from the tank Flush the tank with water as needed to remove sediment 6 Close the drain valve refill the tank and restart the water heater...

Страница 26: ...d billed accordingly When ordering replacement parts always have the following information ready 1 model serial and product number 2 type of gas 3 item number 4 parts description See Repair Parts Sect...

Страница 27: ...ILOT THERMOPILE ASSEMBLY PILOT THERMOPILE ASSEMBLY IGNITER CONNECTOR THERMAL SWITCH CONNECTORS PILOT THERMOPILE THERMOPILE CONNECTOR WHITE WIRE RED WIRE PILOT TUBE NOT SHOWN FOR CLARITY FIGURE 26 7 Ro...

Страница 28: ...ort if glass is missing or damaged removed Replace door gasket if damaged Failure to follow these instructions can result in death explosion or fire 1 Check the door gasket for damage or imbedded debr...

Страница 29: ...Figure 19A 2 Turn off the gas at the manual shut off valve on the gas supply pipe Figure 3 3 Drain the water heater Refer to the section of Draining and Flushing and follow the procedure 4 Disconnect...

Страница 30: ...ostat temperature limit was ex ceeded Status light will blink 4 flashes 11 Pilot line or orifice clogged 12 Non functioning thermopile 13 Air for combustion obstructed 14 FVIR Flame Arrestor blocked w...

Страница 31: ...section 5 Clean filter See Cleaning the Combustion Chamber and Flame Arrestor section SMOKING AND CARBON FORMATION SOOTING 1 Insufficient combustion air 2 Low gas pressure 3 Water heater flue or vent...

Страница 32: ...on if the return air duct is in the same location Correct size of openings to allow sufficient air NO YES YES NO Section C Pilot light will not remain lit Complete this section after completing Sectio...

Страница 33: ...water heater has been operating but has stopped and will not re light check the flame arrestor for signs of high temperature blue or black discoloration indicating a flammable vapor incident If you s...

Страница 34: ...mostat 8 FLASHES This condition only appears if the gas control temperature knob has been turned off and the thermopile continued to produce electric power This condition can occur if the thermopile d...

Страница 35: ...35 NOTES...

Страница 36: ...1 DRAFT HOOD 2 HEAT TRAP COLD SOME MODELS 3 HEAT TRAP HOT SOME MODELS 4 COLD WATER DIP TUBE 5 ANODE ROD 6 TEMPERATURE PRESSURE RELIEF VALVE LOCATED TOP OR SIDE 7 DRAIN VALVE 8 GAS CONTROL VALVE THERM...

Страница 37: ...12B Burner L P Gas Item 13A Manifold Burner Assembly contains the door gasket manifold tube pilot thermopile assembly manifold component block thermal switch and burner Natural Gas Low Nox Item 13B M...

Страница 38: ...on location in the United States its territories or possessions and Canada sized in accordance with proper sizing techniques for residential water heaters bearing a rating plate which has not been alt...

Страница 39: ...M DOES NOT CONSTITUTE PROOF OF PURCHASE OR PROOF OF INSTALLATION DISCLAIMERS NO EXPRESSED WARRANTY HAS BEEN OR WILL BE MADE ON BEHALF OF THE WARRANTOR WITH RESPECT TO THE MERCHANTABILITY OF THE HEATER...

Страница 40: ...40 Copyright 2010 A O Smith Corporation All rights reserved...

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