Easy Radiant Works ED-40S Installation And Operating Instructions Manual - page 20
20
TROUBLE
SHOOTING
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.
Lack of power at the input of the controls caused by:
Check the line voltage (120 v)
The thermostat is not calling for heat
The fan is not running and therefore not closing the air proving switch
Blocked combustion air inlet or blockage in exhaust venting
Faulty air flow connection
The blocked flue air switch in open position
The combustion air switch should be in the closed position
Faulty 24 volt transformer
Low voltage supply to unit
Having established power at the control, and still no ignition occurs then the control itself is
suspect and should be changed.
If the igniters operate and 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 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.