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A.O. Smith INTELLI-VENT, Руководство по устранению неисправностей

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INTELLI-VENT™ CONTROL INFORMATION 

When Used On Gas, Residential, Power Vented 

 Water Heaters  

 
 
 
 

 

 
 

 
 
 
 

        

   Printed in the USA – 0605   

 

          Part No. GTC-070 R3 

 

Revision 2 includes updated troubleshooting information for error codes 3, 4, and 6. 

Revision 3 includes updated troubleshooting for error codes 4 and 6 and technical bulletins 

 

http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Содержание INTELLI-VENT

Страница 1: ...ted in the USA 0605 Part No GTC 070 R3 Revision 2 includes updated troubleshooting information for error codes 3 4 and 6 Revision 3 includes updated troubleshooting for error codes 4 and 6 and technic...

Страница 2: ...standard residential controls Temperature Probe Thermistor The temperature probe houses the ECO and a temperature sensor which is a thermistor Thermistors are thermally sensitive variable resistors A...

Страница 3: ...e Switch 5 Pin Molex Plug Hot Surface Ignitor Flame Sensor Resistor Wire Ignitor Assembly Flame Sensor Silicon Nitride Ignitor Hot Surface Ignitor Front Left Side View Temperature Probe ECO 6 LED indi...

Страница 4: ...s are factory set at 120 F 2 Wake Up the control by holding down both of the temperature adjust buttons at the same time for about one second then release the buttons and the LED lights will indicate...

Страница 5: ...commercial control all six LEDs are yellow The residential control has a vacation temperature setting 70 F and it is referenced on the display There is no vacation setting on a commercial control The...

Страница 6: ...control must be replaced 195 F Commercial resettable reset temp 120 F OPERATING SEQUENCE Pre Purge Time 5 seconds Ignitor Warm up Time 20 seconds Trial for Ignition Period 4 seconds Inter Purge Time...

Страница 7: ...are shown above notice the raised ridges identifying the 1 2 and 3 pins A black marker was used to highlight these ridges for the photograph Service Notes The Black Resistor Wire on the ignitor assem...

Страница 8: ...INTELLI VENT TROUBLESHOOTING GUIDE Technical Training Department Ashland City Tennessee 2005 7 of 24 Wiring Harness Connection Diagram Models Equipped With Vent Temperature Limit Switch...

Страница 9: ...INTELLI VENT TROUBLESHOOTING GUIDE Technical Training Department Ashland City Tennessee 2005 8 of 24 INTELLI VENT SEQUENCE OF OPERATION...

Страница 10: ...s display error codes by flashing the LED lights on and off Important Service Installation Notes 1 Always turn power off for 10 to 20 seconds and then back on again to clear an error code before repla...

Страница 11: ...tch circuit wiring is correct and the air pressure switch is not jumpered Turn off power and unplug the water heater from wall outlet Disconnect both wires from the air pressure switch terminals Check...

Страница 12: ...pipe Defective air pressure switch Check pressure switch contacts with ohm meter during blower operation contacts should close show continuity after blower starts and comes up to speed If air pressur...

Страница 13: ...cle the power to the water heater off and on to reset Check Repair Gas supply is off or too low of pressure to operate Insure manifold gas pressure is present and within requirement Insure the flame s...

Страница 14: ...ff for 10 20 seconds then on again to clear these error codes If any of these error codes persist or cannot be cleared replace the Intelli Vent control ERROR CODE 10 FLAME SENSED OUT OF SEQUENCE Flame...

Страница 15: ...iagnostic check detected a temperature adjust button stuck closed Check Repair Make sure no objects are leaning against the front of the control Lightly press and release each of the buttons once If t...

Страница 16: ...resistor wire between pins 3 4 with an ohm meter A If the reading taken is less than 2000 or more than 1 7 million ohms replace the ignitor assembly B If the reading taken is between 2000 and 1 7 mil...

Страница 17: ...m www statewaterheaters com If it is determined there is not a sufficient supply of combustion air or fuel gas resolve these problems first The test procedures outlined in this technical bulletin pres...

Страница 18: ...INTELLI VENT TROUBLESHOOTING GUIDE Technical Training Department Ashland City Tennessee 2005 17 of 24 FLAME SENSOR ALIGNMENT CONT...

Страница 19: ...nce test Check the ignitor resistance with an ohm meter set on a low scale Ignitor resistance should be between 11 5 and 18 8 ohms If the resistance of the ignitor is not within this range replace the...

Страница 20: ...ts The outer and inner combustion chamber access covers and the fiberglass insulation between the outer jacket and the combustion chamber must also be installed correctly If not installed properly thi...

Страница 21: ...cts on this air pressure switch will close in response to changes in vent system pressure At the beginning of a heating cycle the ignition control will check if the air pressure switch circuit is open...

Страница 22: ...e term activate means to change state If the contacts are normally open activating the contacts will cause them to close If the contacts are normally closed activating the contacts will cause them to...

Страница 23: ...tial products use the first type shown below SWITCH CONTACTS SWITCH ACTION Normally Open NO Close on a rise in pressure Close on a fall in pressure Normally Closed NC Open on a rise in pressure Open o...

Страница 24: ...the blower comes up to speed record the pressure reading If the pressure reading does not reach the activation point for the pressure switch the vent system must be checked for restrictions too many...

Страница 25: ...24 of 24 AIR PRESSURE SWITCH CIRCUITS 1 4 Blocked Exhaust Switch Normally Open Contacts Close on a Fall in Pressure Vent Temperature Limit Switch Normally Closed Contacts Open on a Rise in Temperatur...

Страница 26: ...requiring the use of the restrictor was reduced to 20 feet or less with this change This means that if the vent distance is greater than 20 feet the restrictor is not needed The series numbers 100 101...

Страница 27: ...ting distance requiring the use of the restrictor was reduced to 20 feet or less with this change This means that if the vent distance is greater than 20 feet the restrictor is not needed The model nu...

Страница 28: ...Additional copies are available from the Ashland City Advertising Department Prepared by the A O Smith State Water Heater Technical Training Department Ashland City Tennessee...

Страница 29: ...ing tube is properly connected not kinked or damaged 3 Check continuity of vent temperature limit switch replace switch if contacts remain open under 160 F 4 Ensure the correct size of vent pipe 2 3 4...

Страница 30: ...ause excessive air turbulence in the combustion chamber 7 8 9 Self diagnostic tests have found a problem with the gas valve driver circuit internal microprocessor or other internal circuits 1 Turn the...

Страница 31: ...eater back in operation and allow it to cycle several times to ensure the problem has been resolved If the error code persists continue to step 3 below 3 Turn off power to the water heater Remove the...

Страница 32: ...that cannot be reset by cycling power to the water heater See the instructions below for the reset procedure 1 Turn off power to the water heater Carefully check the surrounding area for any substanc...

Страница 33: ...ssembly and check the flue baffle ensure the flue baffle is in good condition and properly installed reinstall as necessary and or replace the flue baffle if worn or damaged 5 Ensure water heater is n...

Страница 34: ......

Страница 35: ...Vent Power Direct Vent Cyclone Master Fit BTN BTI models 1 At the beginning of a heating cycle the ignition control will verify the air pressure switch circuit is open before the control energizes th...

Страница 36: ...tinuous conductive path through the switch contacts Open contacts will not allow electricity to flow there is no continuity through the switch contacts The state of the contacts open or closed can be...

Страница 37: ...f switches Service Note Because one of the two air chambers is vented to the atmosphere the ambient in the surrounding area air pressure is critical Ambient air pressure can push or pull on the diaphr...

Страница 38: ...A O Smith fan assisted water heaters This information can usually be found in the sequence of operation section of the owner s manual and or service manual for the product Contact the A O Smith techn...

Страница 39: ...or wear leaks kinks or any kind of debris or condensate in the sensing tube repair replace as necessary Connect a digital manometer to the pressure switch end of the sensing tube as shown above Turn t...

Страница 40: ...t equipped with normally closed air pressure switches Cyclone BTH 120 400 models are equipped with two normally closed air pressure switches a blocked inlet and blocked exhaust switch see pages 7 8 No...

Страница 41: ...locked Intake Air Pressure Switch Cyclone BTH 120 400 Models Normally open contacts close on a rise in pressure Blower Prover Air Pressure Switch Cyclone BTH 120 400 Models Normally closed contacts op...

Страница 42: ...Normally Closed Contacts Open on a Rise in Temperature Molex Plug 6 Pin Plug 4 6 Blocked Inlet Switch Normally Closed Contacts Open on a Fall in Pressure Blower Prover Switch Normally Open Contacts Cl...

Страница 43: ...Intelli Vent Sequence of Operation...

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