Section 3: Troubleshooting - Lincoln Impinger II 1100 Series Service Manual

Troubleshooting Guide – Gas Ovens
S/N: 2038616 to S/N: 2106100101444 (Ovens with push button controls)
Old Model Number
1116-080-A (or A1)
1116-062-AR
1116-023-A
1117-080-A (or A1)
1117-023-A
Problem
Oven fan will not run Incoming power supply
Fuse, 10 Amp
Fuse Holder
Hi-limit thermostat, control box for
(000-A units)
Switch, main power
Main fan motor
Capacitor
No control box cooling Incoming power
Switch, main power
Cooling fan (s)
No automatic control Incoming power supply
box cooling Cooling fan thermostat
Cooling fan(s)
Oven will not heat Gas supply
Manual gas shut off valve
Main oven fan
Centrifugal switch of main fan
motor
Document #: LIN_EOGO_SM_IMPII_S1100_4608349 – 01/22
Section 3
Troubleshooting
" New Model Number
"
1116-xxx-U
"
"
" 1117-000z-U
" 1117-xxx-U
Cause
Check circuit breakers, reset if required. Check power plug to be sure it is
firmly in receptacle. Measure incoming power, call power co. if needed.
Check, replace if necessary.
Check, replace if necessary.
Check for voltage on both sides of switch. Terminals are normally closed.
If open, reset and test oven for proper operation. If thermostat will not
hold, and control box temperature is not exceeding 140°F (60°C), replace
thermostat.
Check continuity between switch terminals. Replace switch as needed.
Check for 120VAC at motor. If no voltage is present, trace wiring back to
main power switch.
WITH POWER OFF: Check for opens, shorts or grounds. Turn fan blade to
check for locked rotor.
Check for shorts or grounds. (15 mfd)
WARNING: Capacitor has a stored charge, discharge before testing.
Check circuit 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 terminals. Replace switch as needed
Check for 120VAC at cooling fan. If no voltage is present, trace wiring back
to power switch. If voltage is present, and motor does not run, check for
opens, shorts or grounds.
WITH POWER OFF: Check for locked rotor and replace as needed.
Check circuit breakers, reset if needed. Call power company if needed.
Check the cooling fan thermostat (thermostat closes at 120°F and opens at
100°F). With the cooling fan thermostat preheated, check for continuity. If
switch is open, replace.
Supply voltage should now be at these motors. If voltage is present, check
motor for opens, shorts or grounds. WITH POWER OFF: Check for locked
rotor and replace as needed.
Check for adequate gas supply to oven.
Check to see that the manual gas shut off valve is open. Also check flexible
gas line connection for any damage.
Check if main oven fan is operating. If not, refer to "Oven fan will not run".
Check for 120VAC at wire #5 (input to centrifugal switch, located at 6-pin
connector in raceway near the main fan motor) to neutral. If no voltage is
present, trace wiring back to the main power switch. If voltage is present,
check for 120VAC at wire #22 (output of centrifugal switch) to neutral. If no
voltage is present at #22, and the motor is running, replace the main fan
motor.
Gas Type Voltage
Natural 120 VAC
LP Gas 120 VAC
Correction
Hz Phase
60 Hz 1
60 Hz 1
23