L.B. White TS080 Owner's Manual And Instructions

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L.B. White TS080 Owner's Manual And Instructions Manual pdf 19 page image

BLUNT POINTEDOBJECTIGNITION CONTROLRESET SWITCH(WHITE PUSH BUTTON)REDDIAGNOSTICLIGHTREAD THIS ENTIRE SECTION BEFOREBEGINNING TO TROUBLESHOOT PROBLEMS.The following troubleshooting flow charts provide systematicprocedures for isolating equipment problems. The chartsare intended for use by a QUALIFIED GAS HEATER SERVICEPERSON. DO NOT SERVICE THESE HEATERS UNLESS YOUHAVE BEEN PROPERLY TRAINED.TEST EQUIPMENT REQUIREDThe following pieces of test equipment will be required totroubleshoot this system with minimal time and effort.• Digital Multimeter - for measuring AC and DC voltage andresistance.• Low Pressure Gauge - for checking inlet and outletpressures of the gas control valve against dataplaterating.INITIAL PREPARATION Visually inspect equipment for apparent damage. Check all hoses for abrasion and wear. Replace anythat are suspect. Make sure heater is properly installed and meetsminimum clearances to nearest combustiblematerials. (Refer to dataplate on the heater.) Check all wiring for loose connections and worninsulation.Refer to the system operation sequence in this section(page 20) to gain an understanding as to how the heateroperates during a call for heat.Understanding the sequence of operation of the ignitionmodule and related components is essential as it will relatedirectly to problem solving provided by the flow charts.The ignition control module is self-diagnostic. The red lighton the module will flash a 2, 3 or 5 flash pattern repetitivelydepending upon the problem which is diagnosed. Toeffectively use the flow charts, you must first identify whatthe problem is by the light pattern of the red diagnosticlight. If the light is flashing, the pattern will be followed by apause and then a repeat of the pattern until the problem iscorrected. Refer to the table on page 20 for furtherdirection to troubleshooting any problems.The red diagnostic light will only be on when the selectorswitch is positioned to “Heat” and the thermostat is setabove room temperature. The light will not be on when theselector switch is positioned to “Vent”.Ignition Control Lock-Out For safety, the ignition control in this heater continuallymonitors air proving components (fan motor and airproving switch) and burner flame. The ignition control will lock out the control system if itdoes not recognize burner flame presence or if airproving components fail. Either condition causescontrol valve closure to occur. Other problems may create a lock-out condition (seeTroubleshooting flow charts), however, most commonreasons for system lock-out are:-- Improperly shutting the heater down by closing offthe heater’s fuel supply while heater is still inoperation.(Refer to page 14 for proper shut downprocedures.)-- Not having a sufficient L.P. Gas supply, therebyallowing the heater to run out of fuel. (Refer topage 10 for proper sizing of L.P. Gas supply.) System lock-out is identified by:-- Fan motor not operating-- Heater no longer burning gas-- Red diagnostic light on ignition control flashing2, 3 or 5 times repetitively, depending on problem. The red diagnostic light is located adjacent to thewhite reset switch button on the ignition control. Theignition control is at the gas inlet end of the heater andis readily seen when the heater’s access door isopened. The red light and reset switch are easilylocated. Ignition control will require resetting whentroubleshooting and repairing the heater. See resetinstructions below.Resetting Ignition Control1. Insure heater is connected to an approved electricalsupply and a sufficient gas supply is being used.2. Open fuel supply valves to heater.3. Insure selector switch and thermostat are calling forheat.4. Using a small pointed object, push down the whitereset switch button on the ignition control and holdfor 4-5 seconds until the fan motor starts. At thispoint release the button. The heater will light. Seeillustration below.IMPORTANT Use only light pressure to reset the switch. Excessive pressure may damage the reset.Troubleshooting GuideWARNINGElectrical Shock and Burn Hazard Troubleshooting this system may require operating theunit with line voltage present and gas on. Use extremecaution when working on the heater. Failure to follow this warning may result in propertydamage, personal injury or death.19