Adams Condensing Oil-Fired Furnace - Manual (Page 22)

Table 1 System and General Troubleshooting
PROBLEM POSSIBLE CAUSE REMEDY
OH burner
sputtering el
noctle
Etectrodes out of adjustment or defective. Check electrode settings. Check electrodes for dirt bulkt4ip or cracks in porcelain.
Poor transformer high voitage connections
or defective transkmner.
Check contacts between the Igniter and electrodes. If OK, replace the igniter.
Fuel oil Nter clogged. Replace fuel oil storage tank filter and/or fuel oil in-line filter.
Defechve oil pump. Check burner motor/fuel dl pump coupling. Check oil pump pressure. Replace fuel oil
pump If necessary.
Fuel oil line parttalty clogged or contains
air.
Bleed air from oil line.
If proMeiTi persists, replace
oil H im .
Ctieck stack
temperature.
System temperature rise too high. 'Refer to start up procedure for correct temperature rise. Check for clogged air filters.
Check blower fan for excess dirt build-up or debrts. Speed up blower fan if necessary.
Poor fan ofT delay timing selection, {№
stops too soon) Fan control timer.
Check ofT delay timing setting for a delay off between 390 and 600 seconds.
Fuel oil leak. Check fuel on line for leaks. Repair or replace if necessary.
Stack temperature too high. Check stack temperature. Stadr températures will normally range from 20-42 degrees
^xwe ambient.
Thermostat Improperly adjusted or in poor
location. Check thermostat heat anticipator setting agdnst measured amperage draw. Increase
heat anticipator setting If necessary. If the thermostat is being influenced by drafts,
sunlighi, ductwork, etc., relocate to more suitable location.
Morettian (0)
smoke
Insufficient combustion air at oil burner Adjust oil burner combustion air to gain the highest C02 or lowest (Hectical 02 content
In the flue gas (see Burner Set Up).
Heat otchanger partially blocked Chedc for soot build up in turbulators of secondary heat exchanger
Soot bulk) up on
the Mast tube
(end coning).
Poor alignment of between oil burner blast
tube and fire pot.
Chedt alignment. Blast tube should be centered with fire pot burner opening. Oilburrter
head should be
У* Inch back frari the inside surface of the fire pot.
Flame impingement caused by incorrect
nozzte araie.
Check noQle sia and »xHe. Check distance from head to inside surtace of the fire pot.
Defective fire pot. Check fire pot. Repair or replace.
Furnace will not
warm home to
desired
temperature.
Airflow blocked or dirty air filter. Clean or replace air filter.
Thermostat adjustments or location.
Check thermostat heat anticipator setting against measured amperage draw. Increase
heat anticipator setting if necessary. If the thermostat is beir^ Influenced by drafts,
sunlight, duct work, etc., rekx^e to more suitable kx;aUon.
Insufficient airflow. Check ай dampers. Opencloseddampers Including registers In unused rooms. Check
system temperature rise. Iftemperature rise is too high, speed up blowerfan.
Defective high limit corrtrol. Test high limit funcfion of all limit switches. Use a duct thermometer to assess accuracy
of limit control. Check for obstructions to airflow around limit switch bj-metal elements.
Replace control if necessary. NOTE: A. high limit Is auto-resd. B. Auxiliary limit Is
manual re^.
Under-sized nozzle. Check nozzle. If problem is not caused by air flow problems, use larger nczzle, If
petmMed by rating Plate.
Blower ^n motor stopping intermittently
on overload
Check blower fan motor amperage draw. Check motor ventiiation ports, clean if
necessary. Replace motor if necessary.
Burner motor stopping Intermittently on
overload.
Check burner motor. R^ilace if necessary
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