Diagnostic Flowchart to Troubleshoot Repair an Oil Burner. OIL BURNER WONT RUN CONTENTS Diagnostic steps for an oil burner that wont start or wont keep running what to check in what order. POST a QUESTION or READ FAQs about oil burner inspection, diagnosis, repair, troubleshooting procedure, how to get the oil burner running again, best order of diagnostic steps. REFERENCESInspect. APedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website. Oil burner wont start or wont keep running Step by step checklist to to diagnose repair an oil burner that wont run or keeps stopping. Oil burners used on oil fired heating boilers, furnaces, or water heaters can often be diagnosed using a visual inspection approach as well as optional simple test equipment described here. This article series answers most questions about all types of heating system troubleshooting, inspection, diagnosis, and repairs. We describe how to inspect, troubleshoot and repair heating and air conditioning systems to inform home owners, buyers, and home inspectors and students of heating service methods about common heating system defects. The articles at this website describe how to recognize common oil fired heating appliance operating or safety defects, and how to save money on home heating costs. Green links show where you are. Copyright 2. 01. 7 Inspect. Apedia. com, All Rights Reserved. Oil Burner Wont Run Diagnostic Steps what to check in what order. This article series explains the inspection, diagnosis, repair of oil burners used in heating appliances such as hot water boilers, steam boilers, water heaters. If your heat is not working properly, and the problem does not seem to be the oil burner itself, see NO HEAT BOILER hot water or steam heatorsee NO HEAT FURNACE forced warm air heat. We have collected oil burner diagnostic procedures from several texts, 1 2. For example it makes sense to check for a valve or switch that is off, or an oil filter that is clogged, before we start disassembling the fuel unit. If the OIL BURNER WILL NOT STARTA good starting point is at HEAT WONT TURN ON. You can return here from that article. Start right at the room thermostat. Or jump right into the detailed oil burner diagnostic step sequence below. Make a quick visual check for. Is there electrical power First test for voltage across terminals 1 2 at the stack relay or cad cell relay primary control. No voltage. Voltage present, next, jump across the thermostat terminals. The burner relay pulls in and. Carrier Hvac Installation Procedures Handbook Pdf' title='Carrier Hvac Installation Procedures Handbook Pdf' />Oil Burner Wont Run Diagnostic Flowchart to Troubleshoot Repair an Oil Burner. OIL BURNER WONT RUN CONTENTS Diagnostic steps for an oil burner that wont start. HVAC is based on inventions and discoveries made by Nikolay Lvov, Michael Faraday, Willis Carrier, Edwin Ruud, Reuben Trane, James Joule, William Rankine, Sadi Carnot. In 1902, the first modern electrical air conditioning unit was invented by Willis Carrier in Buffalo, New York. After graduating from Cornell University, Carrier. If youre a fan of classic science fiction from the likes of Ray Bradbury, Isaac Asimov, and Robert A. Heinlein, youre in luck. Archive. org now has a massive. The oil burner fires up. Check the flame for normal appearance, remove your thermostat jumper and make sure the thermostat calls for heat. The system seemed to run OK when you jumped the TT terminals, right With your thermostat jumper removed If the burner does not again go off on reset or lock out then. Check for short on cycling of the oil burner. This condition can lead to off on reset. Not short cycling the system should be OKOil Burner System short cycles. Check for loose wires at controls, power, thermostats c. Check for hot or burned relay switch contacts,Check for thermostat bounce or thermostat internal wiring or flat cable connection defects THERMOSTATS, HEATING COOLINGCheck the aquastat HI, LO and DIFF settings AQUASTAT CONTROLSCheck also for improper voltage. Check the low water cutoff switch that can also bounce if one is present LOW WATER CUTOFF VALVECheck for improperly set heat anticipator HEAT ANTICIPATOR Adjustment if present or. Check for improperly set HVAC cycle or swing temperature variation THERMOSTAT SWITCHES, INTERNALIf all of these look ok you may need to change the primary control relay. Thanks to HVAC tech Anthony Alaggio for suggestions about oil burner short cycling. If the burner oil burner does not fire up, there is a problem with the thermostat or the 2. V thermostat circuit. You may need to change the 2. V transformer or the thermostat. If the burner fires up but goes off on reset again. Check for a bad flame, bad firing, dirty nozzle, electrodes, oil leak at the nozzle adapter, blocked combustion air. If a stack relay is used, check for a dirty or broken helix. If a cad cell relay is used, check for a dirty or failed cad cell eye. If these look OK you probably have to change the primary control relay. The oil burner does not fire up successfully. Paint Tool Sai Mac With Pen Pressure Not Working on this page. If the burner motor started, check for. Savage 2: Tortured Soul more. Soar To Success Reading Intervention Program. No oil flow comes out of the burner. You already checked that there is really oil in the tank, right OIL TANK GAUGESCheck that the oil tank float gauge is not stuck. Check for a dirty or clogged oil filter OIL FILTERS on HEATING EQUIPMENTCheck for a dirty, clogged oil burner nozzle Oil Burner NozzlesPDFBleed the fuel unit of any trapped air, then check the pressure pressure out, vacuum in on the oil lines. Check any oil safety valves, check valves, PRVs, OIL LINE SAFETY VALVES, OSVs. Check for a clogged strainer in the oil burner fuel unit. Check that the burner motor is turning the burner blower and fuel unit a bad coupling or a bad motorCheck for an oil line that is clogged or blocked by ice outdoor tank or sludge a clue is to see how much crud is in the bottom of the oil filter canister. OIL LINE CLOGGING FIXIf there is oil flowing freely at the oil line and all of the above check out, we suspect that the fuel unit is not pumping. No ignition oil comes out of the nozzle but there is no ignition. Check. Check for voltage at the primary, terminals 24 or if constant ignition 23. Test the ignition transformer for spark old timers know a screwdriver trick if the flame is blue and reaches mostly across the gap of the transformer springs with the screwdriver an inch or so away, the transformer is probably ok. Watch out this is very high voltage you could be shocked or killed this old timers trick is not officially recommended and our service tech declined to be photographed performing this step. Other, recommended oil burner ignition transformer test procedures are provided by the manufacturer. If the transformer is weak the spark will be dead, not bridge the gap to the screwdriver, or not extend to at least 34 the width between the contact springs, or will be orange not blue in color. If the transformer does not check out, replace it. If the transformer looks OK check closely the ignition leads including for cracked shorting ceramic insulators in the burner assembly or an improper or improper gap or damaged electrodes. You already looked to be sure the electrodes were not bridged with soot and crud, right If the burner motor does not start, check for. Check primary terminals 2 3. Check for live voltage at wires powering the motor if no power there and the relay pulled then there may be a broken wireIf hot and ground are good at the motor, check for a thermal overload switch pop on the motor if its out, let the motor cool, reset it and start again. RESET SWITCH, ELECTRIC MOTORIf after reset of the thermal overload the motor still wont start, replace the motor. At ELECTRIC MOTOR DIAGNOSTIC GUIDE we describe both offline and online electric motor circuit analysis MCA test procedures. If the oil burner fires but just intermittently oil burner chatters or starts and stops. Check for loose electrical connections at all power and control wiring connections. Here is an example from reader M. F. the furnace draft fan began to pulse several times upon starting.