Lincoln 1133-000-A - Manual (Page 12)

Impinger II – Advantage Digital Service Manual - Domestic 12
TROUBLESHOOTING GUIDE
ELECTRIC OVENS
1130-000-A 208VAC 60 HZ. 1 PHASE
1131-000-A 240VAC 60 HZ. 1 PHASE
1132-000-A 208VAC 60 HZ. 3 PHASE
1133-000-A 240VAC 60 HZ. 3 PHASE
SYMPTOM POSSIBLE CAUSE EVALUATION
Oven fan will not run Incoming power supply Check circuit breakers. Reset if required. Call
power co. if needed.
Fuses, 10 Amp, motor and
controls Check, replace if necessary.
Fuse holder Check, replace if necessary.
Hi-limit thermostat,
control box 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.
Switch, main power Check continuity between switch terminals.
Replace switch as needed.
Main fan motor Check for supply voltage 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.
Capacitor Check for shorts or grounds.
WARNING: Capacitor has a stored charge,
discharge before testing.
No control box cooling Incoming power 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.
Switch, main power Check continuity between switch terminals.
Replace switch as needed.
Cooling fan Check for supply voltage 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.
No automatic control box
cooling Incoming power supply 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.
Cooling fan thermostat Check the cooling fan thermostat. (Thermostat
closes at 120
°F and opens at 100°F). With the
cooling fan thermostat pre-heated, check for
continuity. If switch is open, replace cooling fan
thermostat.
Cooling fan Check for supply voltage at cooling fan. If no
voltage is present, trace wiring back to cooling
fan thermostat. If voltage is present, and motor
does not run, check for opens, shorts or grounds.
WITH POWER OFF: Check for locked rotor.
Oven will not heat Main fan motor Check for main fan operation. If it is not
operating, refer to “Oven fan will not run”.
Air pressure switch This normally open switch should close when the
main fan is activated. Refer to the “Removal and
installation” section for proper adjustment.
Replace as needed.
Hi-limit thermostat, Terminals are normally closed. If open, reset