Slant/Fin Sentry Series - Manual (Page 4)

NOTE: READ MANUFACTURER'S INSTRUCTION MANUAL INCLUDED IN VENT DAMPER CARTON.
Figure 5.
Figure 6. Figure 7.
SYMPTOM POSSIBLE CAUSE REMEDY
TROUBLESHOOTING GUIDE
(listed in order of probability)
Heating required and burner
will not operate. Damper open.
Burner operates normally.
Burner shuts down normally,
but damper will not close.
Burner will not operate.
Damper closed and will not
open.
Burner will not operate.
Damper operates normally.
Damper vane stops in other
than fully open or fully closed
position.
Intermittent burner operation.
(Damper operates normally.)
Burner operates with damper
closed.
INSTALLATION AND SERVICE SHOULD BE PERFORMED BY A QUALIFIED INSTALLING OR SERVICE AGENCY.
Thermostat is set wrong. Reset room thermostat to call for heat.
No electrical power. Turn on switch, replace fuse, reset circuit breaker, or
repair wiring.
Improper wiring. Recheck and correct any wiring errors.
Defective burner components. Check, repair or replace burner components, gas valve,
pilot, IID, IID sensor, etc.
Damaged or defective damper operator. Replace damper operator.
Damper is blocked open. Check for free damper movement, and remove blockage.
Improper wiring. Recheck and correct any wiring errors.
Damaged or defective damper operator. Replace damper operator.
No call for heat. Reset thermostat (heat or hot water) to call for heating.
Damper is blocked closed. Check for free damper movement and remove blockage.
Improper wiring. Recheck and correct any wiring errors in line and low volt-
age circuits.
Broken return spring (if equipped). Replace drive assembly.
Improper wiring. Recheck and correct any wiring errors.
Defective burner components. Check, repair or replace burner components.
Improper wiring. Recheck and correct any wiring errors.
Damper is blocked. Check for maximum 90° damper movement. If less than
90°, remove blockage.
Missing roll pin damper stop. Replace stainless steel roll pin.
Broken coupling. Inspect and replace drive assembly.
Broken return spring (if equipped). Replace drive assembly.
Broken spring stop (if equipped). Replace drive assembly.
Burner access door open. Re-install door and fasten with wing nuts.
Bent or broken coupling. Replace drive assembly.
Bad ground. Recheck and correct any wiring errors.
Damaged or defective switch. Replace damper operator.
Improper wiring. Recheck and correct any wiring errors.
Burner operates before
damper is open.
SLANT/FIN CORPORATION, Greenvale, N.Y. 11548 • Phone: (516) 484-2600
FAX: (516) 484-5921 • Canada: Slant/Fin
LTD/LTEE , Mississauga, Ontario
www.slantfin.com