Troubleshooting Guide 1116 - 1117 - Lincoln 1100 Series Service Manual

REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS
SYMPTOM
Oven fan will not run
No main fan cool down
Main fan runs after 20
minute cool down
20 minute cool down
No control box cooling
18

TROUBLESHOOTING GUIDE 1116 - 1117

MODEL 1116 / NATURAL GAS / 120VAC / 60 HZ / 1 PHASE
MODEL 1117 / L.P. GAS / 120VAC / 60 HZ / 1 PHASE
POSSIBLE CAUSE
Incoming Power Supply
Main Fan Switch
20 Minute Time Delay
Main Fan Relay
Fuse Holder
Main Fan Motor
Capacitor
20 Minute Time Delay Relay
Main Fan Relay
Time Delay Relay
Incoming Power
Main Fan Switch
20 Minute Time Delay
Main Fan Relay
Cooling Fans
GAS OVENS
EVALUATION
Check breakers/Reset if required Check power plug to
be sure it is firmly in receptacle. Measure incoming
power/call Power Co. if needed.
Check continuity between switch terminal.
Check for 120 VAC at terminal #1 to neutral on 20
minute Time Delay Relay. If no voltage is present,
trace wiring back to power source. If voltage is present
at terminal #1, check for 120 VAC at terminal #2 to
neutral. If no voltage is present, and Main Fan Switch
is closed, replace Time Delay
Check for 120 VAC to coil of the Relay, if no voltage
is present, trace wiring back
Delay Relay. If voltage is present, check to insure
contacts are closing.Fuse, 10 Amp Check, replace if
necessary
Check, replace if necessary.
Check for opens, shorts, or grounds. WITH POWER
OFF: turn fan blade to check for locked rotor.
Check for shorts or grounds. WARNING: Capacitor
has a stored charge, discharge before testing.
Check for 120 VAC at pin #2 and #3 while main fan is
running. Turn off main fan switch and 120 VAC should
continue to be present for 20 minutes at terminal 2.
Check if relay is operating and terminals are remaining
closed for main fan cool down of 20 minutes
NOTE: The time delay relay will keep the coil of main fan relay
closed, maintaining main fan operation for cool down for
approximately 20 minutes.
120 VAC at terminal 2 should discontinue
approximately 20 minutes after the main fan switch is
switched off. If the switch is open and voltage
continues at terminal 2, replace Time Delay. When
voltage at terminal 2 of Time Delay ceases ,the main
fan relay must open.
Check main circuit breakers, reset if required, call power
company if needed.
Check continuity between switch terminals.
With fan switch on, check for 120 VAC at terminal 2 of
Time Delay.
Check continuity of 120 VAC coil. Check for power to
the relay coil (120 VAC).
120 VAC should now be at the fan motors. If voltage is
present, check motors for shorts or opens WITH
POWER OFF: Check for locked rotor.
Impinger II –1100 Series Service Manual - Domestic
to 20 minute Time