Easy Radiant Works ED-40U, Operating Instructions Manual

Page: 31 / 44

31
TROUBLESHOOTING
WARNING
Improper adjustment, alteration, service or maintenance can cause property damage, injury or
death.
This heater must be installed and serviced only by a trained gas service technician.
If at the onset of ignition, no ignition occurs, the following should be checked.

Check the line voltage (120 V). Ensure that polarity is correct and ground is solid.

Verify that 120V power supply voltage is adequate and consistent

Verify that the thermostat is functional, and that thermostat wire is intact.

Ensure that the appliance blower fan is operational.

Check for a blocked combustion air inlet or blockage in exhaust venting.

Inspect for a faulty air switch connection, or damaged air switch air inlet tubing.

Verify that the blocked flu air switch is operational.

Verify that the combustion air switch is operational.

Verify that the 24 Volt transformer is operational.
Having established power at the control, and still no ignition occurs then the control itself is
suspect and should be changed.
If the igniter operates and there is still no ignition, then the gas valve is suspect. Be sure that the
main gas supply is on, that the gas cock in the drop line is on, and that the shut off cock on the
gas valve is open. If all gas cocks are open, then power to the gas valve should be checked. If
there is power to the valve and it does not open then the valve should be replaced.
Continued lockout of the control may indicate that the flame sensor is not providing the signal
back to the control (flame sensing circuit). If the sensor is in the proper position and the lockout
condition continues, then the grounding connections of the burner, control, and transformer
should be checked. Proper polarity must be maintained in the building wiring. Reversed
polarity or insufficient supply voltage can cause intermittent ignition failure. If this does not
solve the problem, then the control is suspect.
Ignition control modules are solid state; computerized devices that require consistent supply
voltage while in operation.
See control specific troubleshooting on following pages.