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Impinger II – Advantage Digital Service Manual - International
8
TROUBLESHOOTING GUIDE
IMPINGER II ADVANTAGE
SERIAL NUMBER 2038616 AND ABOVE
(OVENS WITH PUSH BUTTON CONTROLS)
MODEL 1154-000-EA NAT. GAS 230VAC 50 HZ. 1 PHASE
MODEL 1155-000-EA LP GAS 230VAC 50 HZ. 1 PHASE
REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS
SYMPTOM POSSIBLE CAUSE EVALUATION
Oven fan will not run Incoming power supply Check breaker, reset if required. Check power plug to
be sure it is firmly in receptacle. Measure incoming
power, call power co. if needed.
Fuse, 10 amp 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 fan With power off, check continuity between switch
terminals. Replace as needed.
Motor, main fan Check for opens, shorts or grounds. With power off, 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 supply Check breaker, reset if required. Check power plug to
be sure it is firmly in receptacle. Measure incoming
power, call power co. if needed.
Switch, main fan With power off, check continuity between switch
terminals. Replace as needed.
Cooling fan Line voltage should now be at the cooling fan. If voltage
is present, check motor for opens, shorts or grounds.
With power off, check for locked rotor.
No automatic control
box cooling
Incoming power supply Check breaker, 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
thermostat is open, replace cooling fan thermostat.
Cooling fan Line voltage should now be at the cooling fan. If voltage
is present, check motor for opens, shorts or grounds.
With power off, check for locked rotor.
Oven will not heat
Serial Number
2045407 & Below
Gas supply Check for adequate gas supply and be sure that the
manual gas shut off valve is open. Also check flexible
gas line connection.
Main fan If not operating, refer to “Oven fan will not run”.
Gas pressure switch This switch is located inside the gas valve and should
close when gas pressure is present.
WITH POWER OFF: Remove 3 prong plug (on gas
valve) and measure continuity between terminals 2 and
3. If no continuity, check the following: Proper gas
pressure supply to gas valve as marked on the oven
specification plate. Check for proper adjustment of the
gas pressure switch, 10 for Nat. gas, 27 for LP gas or
4.5 for town gas. Check the filter in gas valve for