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SYMPTOM
Oven fan will not run
No control box cooling
No automatic control
box cooling
Control box cooling fan
continues to run
Oven will not heat
S/N N31348 and
Below
6
TROUBLESHOOTING GUIDE
IMPINGER ADVANTAGE GAS OVENS
SERIAL NUMBER N28654 AND ABOVE
(OVENS WITH PUSH BUTTON CONTROLS)
POSSIBLE CAUSE
Incoming power supply
Fuse, 10 Amp
Fuse holder
Switch, oven power
Motor, main fan
Incoming power supply
Fuse, 10 Amp
Fuse holder
Switch, oven power
Cooling fan
Incoming power supply
Cooling fan thermostat
Cooling fan thermostat
Main fan
Gas supply
Air pressure switch
Oven cavity hi-limit
thermostat
Gas pressure switch
EVALUATION
Check circuit breaker, reset if required. Check power
plug to be sure it is firmly in receptacle. Measure
incoming power, call power co. if required.
Check, replace if necessary.
Check, replace if necessary.
Check for line voltage supplied to switch. If no voltage is
present, trace wiring back to fuse holder. Check
continuity between switch terminals. Replace switch as
needed.
Check for line voltage supplied to motor. If no voltage is
present, trace wiring back to oven power switch. Check
motor for opens, shorts or grounds.
WITH POWER OFF: Turn fan blade to check for locked
rotor.
Check circuit breaker, reset if required. Check power
plug to be sure it is firmly in receptacle. Measure
incoming power, call power co. if required.
Check, replace if necessary.
Check, replace if necessary.
Check for line voltage supplied to switch. If no voltage
is present, trace wiring back to fuse holder. Check
continuity between switch terminals. Replace switch as
needed.
Check for supply voltage to the cooling fan. If no
voltage is present, trace wiring back to the fuse holder.
If voltage is present and motor does not run, check
motor for opens shorts or grounds.
WITH POWER OFF: Check for locked rotor.
Check circuit breaker, reset if required. Check power
plug to be sure it is firmly in receptacle. Measure
incoming power, call power co. if required.
Check cooling fan thermostat (thermostat closes at
120°F and opens at 100°F). With cooling fan thermostat
pre-heated, check for continuity
See "Cooling fan thermostat" (NOTE: Thermostat will
remain closed if control box temperature remains above
120°F.
If not operating, refer to "Oven fan will not run"
Check for adequate gas supply and be sure that the
manual gas shut off valve is open. Also check flexible
gas line connection.
Check air switch terminals for supply voltage to
terminals NO2 and COM. If voltage is present on one
side only, check for air tube blockage or misalignment. If
these are okay, adjust air pressure switch or replace
switch as needed.
Terminals are normally closed, opens at 350°C (660°F).
If open, reset and test oven for proper operation. If
thermostat will not hold for maximum temperature, and
oven is not exceeding control setting, check for proper
location of the capillary bulb in its spring holder. If above
checks are okay, replace hi-limit thermostat.
This switch is located inside the gas valve and should
close when gas pressure is present.
Impinger I – Adv Digital – Gas Service Manual – International
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