Lincoln 1131-000-A, 116-000-A Main fan, Centrifugal switch of main fan, motor, Hi-limitthermostat

Models: 1117-000-A 1132-000-A 1130-000-A 1131-000-A 116-000-A 1133-000-A

1 32
Download 32 pages 25.41 Kb
Page 8
Image 8

 

Main fan

If not operating, refer to “Oven fan will not run”.

 

 

 

 

Centrifugal switch of main fan

Check for 120VAC at wire #5 (input to centrifugal

 

motor

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.

 

Hi-limit thermostat,

Terminals are normally closed. If open, reset

 

oven cavity

thermostat and retest. If thermostat will not hold

 

 

for maximum oven temperature, and oven is not

 

 

exceeding temperature setting, check for proper

 

 

location of capillary bulb in its spring holder. If the

 

 

capillary checks okay, replace the hi-limit

 

 

thermostat.

 

Burner blower motor

Check for 120VAC supplied to burner blower

 

 

motor at wire #13 to neutral. If no voltage is

 

 

present, trace wiring back to the main power

 

 

switch. If voltage is present, and the motor is not

 

 

running, check for opens, shorts or grounds.

 

 

WITH POWER OFF: Turn motor to check for

 

 

locked rotor.

 

Burner transformer

Check for 120VAC supplied to the primary of the

 

 

burner transformer. If no voltage is present, trace

 

 

wiring back to the oven cavity hi-limit thermostat.

 

 

If voltage is present, check for 24VAC at

 

 

transformer secondary. If there is primary voltage

 

 

but no secondary voltage, replace burner

 

 

transformer.

 

Centrifugal switch of burner

Check for 24VAC at motor connector, wire #13 to

 

blower motor

neutral. If voltage is not present, trace wiring back

 

 

to transformer. If voltage is present, check for

 

 

voltage at wire #14 to neutral. If no voltage is

 

 

present at wire #14, and motor is running, replace

 

 

burner blower motor.

 

Ignition control

Check for 24VAC at ignition control terminals

 

 

marked “24V”, if no voltage is present, trace wiring

 

 

back to centrifugal switch. Check for 120VAC to

 

 

ignition control at terminal “L1” to neutral. If no

 

 

voltage is present, trace wiring back to main

 

 

power switch. When 24VAC is supplied to the

 

 

ignition control, the ignition control switches

 

 

120VAC to the hot surface igniter If 24VAC and

 

 

120VAC are supplied to ignition control, but there

 

 

is no voltage at the hot surface igniter, replace the

 

 

ignition control.

 

Hot surface igniter

If 120VAC is present at hot surface igniter

 

 

terminals, visually check to see that the igniter is

 

 

heating (igniter may be viewed through the port in

 

 

the end of burner tube). The igniter should glow

 

 

bright red. If the igniter does not heat, replace the

 

 

hot surface igniter.

 

Ignition control

After 45 seconds of hot surface igniter pre-heat,

 

 

the ignition control will switch 23VAC to the gas

 

 

control valves. Check for 24VAC output from

 

 

ignition control across terminals marked “valve”

 

 

and “valve gnd”. If no voltage is present, replace

 

 

ignition control.

 

Gas control valves

When 24VAC is supplied to the gas control

8

Impinger II – Advantage Digital Service Manual - Domestic

Page 8
Image 8
Lincoln 1131-000-A Main fan, Centrifugal switch of main fan, Check for 120VAC at wire #5 input to centrifugal, motor