Easy Radiant Works Middleman EZM-90-40, Руководство пользователя

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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.