Filter
Top Products
Impinger I – 1400 Series Advantage Service Manual - Dom & Int’l
16
Flame Sensor To check for flame sensor operation, connect a digital
multimeter (capable of measuring D.C. micro amps)
between the flame sensor wire and Ignition Control.
Sensor current from sensor control is 3 micro amps
minimum. If these readings are not achieved replace
igniter/sensor assembly. Also check for any type of
damage to flame sensor wire and connections.
Flame will not stay on
Ignition Control If there is sufficient flame sensor current, but the
burner will not remain ignited, check the reset button
on ignition control. If all above are okay, replace
ignition control.
No Pilot Pilot Orifice If all above are operating properly, but there is no pilot
flame, check for any obstructions in pilot orifice.
Flame Sensor (There should be a visible pilot flame at this time.) To
check for flame sensor operation, connect a digital
multimeter (capable of measuring D.C. micro
amperes) between the flame sensor wire and the
ignition control. NOTE: this is a current measurement
and the meter must be connected in series. Proper
current readings should be minimum of 3 micro AMP.
D.C. If these readings are not achieved, replace
igniter/sensor assembly. Also check for any type of
damage to flame sensor wire and connections.
Power Supply If there is sufficient micro-amp current, but the flame
will not stay lit, check for proper polarity of the input
power supply.
Pilot flame, but burner
will not stay ignited
Ignition Control If there is sufficient flame sensor current, but the
burner will not remain ignited, check reset button on
ignition control, if all above are okay, replace ignition
control.
Gas Control Relay Check for 220 VAC to relay coil. If no voltage is
present, trace wiring back to ignition control. If voltage
is present, check to insure contacts are closing.
Temperature Control Check for 120 VAC across L1 and L2 on temperature
control board. If no voltage is present, retrace wiring
back to power supply. Turn the temperature
adjustment knob to the maximum temperature
position and check for 120 VAC at the load terminal to
neutral. If 120 VAC is not present, proceed as
follows: If 120 VAC is present and unit is not heating,
see "Solenoid Valve."
Thermocouple Probe Remove thermocouple leads from the temperature
control board and measure the millivolt output of these
leads. Refer to chart in page 25 for proper readings.
If the thermocouple probe checks good, then the
problem is usually with the temperature control board.
Indicator light is on,
but no main
flame(Model 1456-
1457)
Solenoid Valve If output voltage is present at temperature control
board, check for voltage at solenoid valve. If voltage
is present, listen for valve to open and close. Also
check for opens, shorts in coil. Replace as needed.
Indicator light is on,
but no main flame
(1474-1475-1476)
Temperature Control Check for 120 VAC across L1 and L2 on temperature
control board. If no voltage is present, retrace wiring
back to power supply. Turn the temperature
adjustment knob to the maximum temperature
position and check for 220 VAC at the load terminal
to neutral. If 220 VAC is not present, proceed as
follows: If 220 VAC is present, and unit is not heating,
see "Flame Monitor". Check for 220 VAC at terminal
"COM" on temperature control board. If no voltage is
present, trace wiring back to ignition control.