POWER IGN HEATING CLEAN
VA¢ LOCK CHECK 8CI_EH
FV-SENSE E¢O LDO_W THMSTR
b
ELECTRONIC CONTROL DISPLAY
Please check guidelines below. For your safety, water heater service should be performed only by a qualified service person.
Read the GENERAL SAFETY INFORMATION supplied by the water heater manufacturer.
2.
4.
CONTROL DISPLAY STATUS
"POWER" Flashing
"HEATING" and "SHORT" Flashing
"HEATING" and "OPEN" Flashing
"HEATING", "OPEN", and "SHORT" Flashing
"ECO" and "OPEN" Flashing
PROBLEM
Communication Error
The system has detected a
communication error between the upper and lower controls.
The
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.
Weak flame sensor current.
Water temperature in the tank has exceeded 185°F (85°C) and has activated the ECO.
SOLUTION
1.Check the
runs between the upper and lower controls. Check that the wiring is not broken, and the connectors on both ends are properly seated in the mating connectors.
2.Replace the upper control, if the error code
does not clear - cycle power to the water heater "Off" and "On" to reset.
3.Replace the lower control if the problem persists.
1.Turn the power off for 10 to 20 seconds then on again to clear the error code.
2.If the error code persists or cannot be cleared, replace the lower control.
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
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.
4.Ensure the flame sensor is clean - use
ultra fine steel wool or
5.Ensure the hot surface ignitor is positioned to provide consistent ignition.
6.Check for any cracks in the ignitor assembly ceramic insulators - replace ignitor assembly if damaged.
7.Check resistance of the ignitor at room
temperature (77°F - 25°C) at the plug end. Replace ignitor if the resistance is not within 1.72 to 2.4 ohms at room
tem peratu re.
1.Ensure flame sensor is making good contact with the burner flame, ensure flame is steady.
2.Ensure the flame sensor is clean - use
ultra fine steel wool or
1.Turn the power off for 10 - 20 seconds then on again to clear this error code.
2.Replace the lower control if the error code persists.
38
