Rheem GTC Series Guía para resolver problemas descargar pdf (Pagina 32)

A. O. Smith Water Products Company AHSTB02807 Technical Training Department

TB-A028-06 - A. O. SMITH - FVIR INTELLI-VENT TROUBLESHOOTING CHART

# LED STATUS PROBLEM SOLUTION

Ignition/flame failure.

The water heater has reached

the maximum number of retries

and is currently locked out for

one hour.

Cycle the power to the water

heater off and on to reset.

1 Gas supply is turned off - pressure too low. Ensure

supply and manifold gas pressures are within

requirements in the installation manual. Manifold gas

pressure is non-adjustable if pressure is off by more

than 0.3” W.C. replace the Intelli-Vent™ control.

2 Low supply voltage - should be 115 - 125 VAC.

3 Ensure flame sensor is making good contact with the

burner flame, ensure flame is steady see #8 below.

4 Ensure the flame sensor is clean - use ultra fine steel

wool or Scotch-Brite™ pad to clean flame sensor.

5 Ensure the hot surface ignitor is positioned to provide

consistent ignition.

6 Check for any cracks in ignitor assembly ceramic

insulators - replace ignitor assembly if damaged.

7 Check resistance of ignitor at room temperature

(77°F) at the plug end. Replace ignitor if resistance is

not within 11.5 and 18.8 ohms at room temperature.

8 Ensure the correct size of vent pipe (2”, 3”, 4”) was

used per installation manual for vent length. Using

larger pipe than required may cause excessive air

turbulence in the combustion chamber.

Self diagnostic tests have found

a problem with the gas valve

driver circuit, internal

microprocessor, or other internal

circuits.

1 Turn the power off for 10-20 seconds then on again

to clear these error codes.

2 If any of these error codes persist or cannot be

cleared - replace the Intelli-Vent™ control.

Flame signal has been sensed

out of proper sequence.

1 Turn the power off for 10-20 seconds and then on

again to clear this error code.

2 Replace the Intelli-Vent™ control if this error code

persists.

Water temperature in the tank

has exceeded 195°F and has

activated the ECO.

1 Turn the power off for 10-20 seconds then on again

to clear this error code.

2 Replace the control if the error code persists.

The self diagnostic check

detected one or both of the

temperature adjust buttons are

stuck.

1 Press and release temperature adjust buttons. If the

above action does not clear the error, the control will

continue to regulate water temperature at the last

setting. However, settings will no longer be

adjustable - the control should be replaced.

The self diagnostic test has

detected the water temperature

sensor (thermistor) is either

open or shorted.

1 Turn the power off for 10-20 seconds then on again

to clear this error code.

2 Replace the Intelli-Vent™ control if this error code

persists.

Service Note:

Ignitors are wearing parts; the

resistance (ohms) of a hot

surface ignitor will increase over

time. If the resistance at room

temperature is near 18.8 ohms -

consider replacing the ignitor as a

preventative measure.

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