Vulcan-Hart ML135341-00048, ML-135340-00036 Safety Ignition Module, Indicator Light Removal

Models: 24RRG 36RRG 60RRG 48RRG ML-135342-00060 ML-135339-00024 ML135341-00048 ML-135341-00048 ML-135340-00036

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INDICATOR LIGHT

INDICATOR LIGHT

The indicator light illuminates fully to indicate that the corresponding thermostat and burner have turned on and gas is flowing through the corresponding solenoid valve. The indicator light will illuminate at a lower intensity when the pilot safety circuit is being made (pilot lit) but the corresponding burner solenoid valve and thermostat are not on. The indicator light will exhibit no illumination if the pilot safety circuit is not made (pilot not lit).

INDICATOR LIGHT TROUBLESHOOTING

SYMPTOM – LIGHT DOES NOT COME ON WHEN THERMOSTAT AND BURNER ARE ON.

1.Check for loose or excessively greasy/dirty terminal connections

2.Check for approx. ½ line voltage between the two indicator light terminals with the corresponding burner and thermostat off.

A. If no voltage – check wires coming in from the corresponding safety ignition module to the solenoid to the light for shorts or breaks.

3.With thermostat on and corresponding burner lit – check for 120 voltage between both wires at the light.

A.If no voltage – check wires coming from the corresponding thermostat to the solenoid to the light for shorts or breaks. Check thermostat and safety ignition module

B.If you have 120V – replace indicator light.

INDICATOR LIGHT TROUBLESHOOTING Disconnect the electrical power and follow lockout / tagout procedures

INDICATOR LIGHT REMOVAL

1.Remove the control panel

2.Label and disconnect wires to the light

3.Squeeze the light retainers and slide the light out through the front of the control panel

4.Reverse the procedures to install and check for proper operation

SAFETY IGNITION MODULE

The safety ignition module is a direct spark ignition control that utilizes a microprocessor circuit for ignition and flame sensing. The flame sensing is achieved via flame rectification. The unit will continue to spark and keep the corresponding solenoid valves locked out until a minimum flame current of 1.0 μA is achieved.

INDICATOR LIGHT REMOVALPin 1

Pin 2

Pin 3

Pin 4

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Vulcan-Hart ML135341-00048, 48RRG Safety Ignition Module, Indicator Light Troubleshooting, Indicator Light Removal