32
Troubleshooting (cont’d)
SYSTEMS CHECK
Please check guidelines below. For your safety, water heater
service should be performed only by a qualified service
technician.
WARNING
DO NOT BY-PASS ANY CONTROLS TO MAKE HEATER
OPERATE. OPERATE ONLY AS WIRED FROM FACTORY.
LED STATUS
PROBLEM
SOLUTION
An open earth ground circuit to the
1. Check that the earth ground connection is
ignition system.
properly connected.
2. Check that the ground conductor on the
water heater is properly connected.
Wiring error or a high resistance to
1. Check for proper connection of line neutral
earth ground.
and hot wires.
2. Check that the water heater is securely
connected to earth ground.
Pressure switch remained closed longer
1. Pressure switch wiring is incorrect.
than 5 seconds after the call for heat
2. Replace pressure switch.
began.
Pressure switch remained opened longer
1. Pressure switch wiring is incorrect.
than 5 seconds after the combustion
2. Pressure switch tubing not connected
blower was energized.
correctly.
3. Air intake or exhaust obstructed.
Error in the hot surface ignitor circuit.
1. Check that all wiring is correct and secure.
2. Replace hot surface ignitor.
System in lockout.
1. Gas supply is off or too low to operate.
2. Hot surface ignitor not positioned correctly.
3. Low voltage to the water heater.
4. Electric polarity to unit is incorrect - test
and correct.
Problem in the gas valve driver circuit.
1. Turn power to the water heater off for
10 seconds and then back on.
2. Replace gas control valve.
Problem with the internal circuit.
1. Turn power to the water heater off for
10 seconds and then back on.
2. Replace gas control valve.
Problem with the internal circuit.
1. Turn power to the water heater off for
10 seconds and then back on.
2. Replace gas control valve.
Flame signal sensed out of proper
1. Replace gas control valve.
sequence.
ECO activated.
1. Replace gas control valve.
One of the temperature adjust buttons
1. Press and release each of the buttons once.
stuck closed.
2. Replace gas control valve.
Water temperature sensor is either
1. Check that all wiring is correct and secure.
open or short circuited.
2. Replace gas control valve.
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