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TROUBLESHOOTING
LED STATUS
An open earth ground circuit to the ignition
system.
Wiring error or a high resistance to earth
ground.
Pressure switch remained closed longer than 5
seconds after the call for heat began.
Pressure switch remained open longer than
5 seconds after the combustion blower was
energized.
Error in the hot surface igniter circuit.
System in lockout.
Problem in the gas valve driver circuit.
Problem with the internal circuit.
Problem with the internal circuit.
Flame signal sensed out of proper sequence.
ECO activated.
One of the temperature adjust buttons stuck
closed.
Water temperature sensor is either open or
short circuited.
PROBLEM
SOLUTION
1. Check that the earth ground connection is
properly connected.
2. Check that the earth ground conductor on the
water heater is properly connected.
1. Check for proper connection of line neutral and
hot wires.
2. Check that the water heater is securely
connected to earth ground.
1. Pressure switch wiring is incorrect.
2. Replace pressure switch.
1. Pressure switch wiring is incorrect.
2. Pressure Switch tubing is not connected correctly.
3. Air intake or exhaust obstructed.
1. Check that all wiring is correct and secure.
2. Replace hot surface igniter.
1. Gas supply is off or too low to operate.
2 Hot surface igniter not positioned correctly.
3. Low voltage to the water heater.
4. Electric polarity to unit is incorrect - test and cor-
rect.
1. Turn power to the water heater off for 10 seconds
and then back on.
2. Replace gas control valve.
1. Turn power to the water heater off for 10 seconds
and then back on.
2. Replace gas control valve.
1. Turn power to the water heater off for 10 seconds
and then back on.
2. Replace gas control valve.
1. Replace gas control valve.
1. Replace gas control valve.
1. Press and release each of the buttons once.
2. Replace gas control valve.
1. Check that all wiring is correct and secure.
2. Replace gas control valve.
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