Assessments - 3, GPA: 4.3 ( )

Fabricante : Superior Arquivo Tamanho: 1.49 mb Arquivo Nome : Língua de Ensino:

Check pilot flame, it must impinge on thermocouple (Figure 9 on page 7) Clean and/or adjust pilot for maximum flame impingement on thermocouple. Ensure that the connection between the valve and thermocouple are tight and secure. 3. Pilot burning, no gas to burner, Valve knob “ON,” Wall Switch “ON.” A. Wall switch or wires defective. Check wall switch and wires for proper connections. Jumper wire across terminals at wall switch, if burner comes on, replace defective wall switch. If okay, jumper wires across wall switch wires at valve, if burner comes on, wires are faulty or connections are bad. B. Thermopile may not be generating sufficient millivoltage. Check thermopile with millivolt meter. Take reading at thermopile terminals of gas valve. Should read 325 millivolts minimum with optional wall switch “OFF.” Replace faulty thermopile if reading is below specified minimum. C. Plugged burner orifice. Check burner orifice for stoppage and remove. 4. Frequent pilot/burner outage problem. A. Pilot flame may be too low or blowing (high) causing the pilot/ valve safety to drop out. Clean and/or adjust pilot flame for maximum flame impingement on thermocouple (Figure 9 on page 7). TROUBLESHOOTING THE ELECTRONIC IGNITION SYSTEM Note:Before troubleshooting, make sure that the appliance main line gas shut-off valve and the gas control valve are in the "OPEN" position and the burner ON/OFF switch is in the “ON” position. Important:Valve system troubleshooting should only be accomplished by a qualified service technician. SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION 1. Burner will not light. A. Faulty Valve System. See Below. B. “OFF/ON” or wall switch defective. Disconnect the two black wires from the wire nuts. Test switch(s) for continuity with a multimeter. If continuity is not indicated, switch(s) is defective and must be replaced. Note:Before replacing “OFF/ON” switch, be sure to check wiring for loose connections or broken wires and repair as needed. 2. Burners come “ON” but go “OFF.” A. Burner orifice plugged. Check main burner orifice(s) for stoppage. Clean or replace. B. Obstructed vent system. Check vent system for obstructions. • Turn Off Gas Supply • Assure Valve Switch Is In ON Position • Disconnect Control Harness • Set Thermostat To Call For Heat START • Line Voltage Power • Low Voltage Transformer • Limit Controller • Thermostat • Wiring CHECK NO • Plug Control Harness Into Valve. Wait For Internal Check Delay. YES • Igniter Warms Up And Glows Red. NO • Replace Igniter/Flame Rod Assembly. YES YES1 • Check For Proper Voltage At Control Harness (See Insert A). Voltage Should Be 24V Between Thermostat Or Pressure Switch And 24V Common And 24V Hot. 2 • With Pilot Burner Cable Connected, Measure NO Voltage At Valve HSI Element Output. 24V Nominal. (See Insert B) 1 2 YES • Replace Valve. Insert A End View Of Control Harness Connector 24 Volt Hot 24 Volt Common 24 Volt Switched Check For Damaged Or Missing Terminals In Connector Igniter Terminals Inser...

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