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Impinger II – 1100-000-A Series (SN 2038615 & Below) Service Manual –Int’l
11
temperature display.
TROUBLESHOOTING GUIDE
ELECTRIC OVENS
MODEL 1164-000-EA 400/230 VAC 50 HZ. 3 PHASE
REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS
SYMPTOM POSSIBLE CAUSE EVALUATION
Incoming power supply Check circuit breakers. Reset if required. Call
power company if needed.
Oven cavity hi-limit
thermostat
Terminals are normally closed. If open, reset
and test oven for proper operation. If
thermostat will not hold for maximum oven
temperature, and oven is not exceeding
temperature dial setting, check for proper
location of capillary bulb in its spring holder. If
above checks okay, replace hi-limit thermostat.
Fuse, 10 Amp Check, replace if necessary.
Fuse holder Check, replace if necessary.
Control box hi-limit thermostat Check for voltage on both sides of the 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.
Main fan switch With power off, Check continuity between
switch terminals. Replace as needed.
Main fan motor Check for opens, shorts or grounds. With
power off, turn fan blade to check for locked
rotor.
Oven fan will not run
Capacitor Check for shorts or grounds.
WARNING: Capacitor has a stored charge,
discharge before testing.
Check for main fan operation. If not operating,
refer to “Oven fan will not run”.
No control box cooling
Cooling fan Line voltage should now be at the cooling fan.
If voltage is present, check motor for shorts or
opens. With power off, check for locked rotor.
Incoming power supply Check circuit breakers. Reset if required. Call
power company if needed.
Oven cavity hi-limit
thermostat
Terminals are normally closed. If open, reset
and test oven for proper operation. If
thermostat will not hold for maximum oven
temperature, and oven is not exceeding
temperature dial setting, check for proper
location of capillary bulb in its spring holder. If
above checks okay, replace hi-limit thermostat.
Cooling fan thermostat 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 thermostat.
No automatic control box
cooling
Cooling fan Line voltage should now be at the cooling fan.
If voltage is present, check motor for shorts or
opens. With power off, check for locked rotor.
Control box cooling fan
continues to run
Cooling fan thermostat This normally open thermostat should close at
120°F (48.9°C) and reopen at 100°F (37.8°C).
Replace as needed.