Defective safety
magnet.(mV Plus
systems)
Verify operation of safety magnet in the
following manner.
(A) Depress and hold pilot button.
(B) Verify open-circuit thermocouple
voltage as described in previous step.
© Reconnect thermocouple to valve.
(D) Measure the Millivoltage between
the solder button on the base of the
safety magnet, and the valve body. If the
mV reading is above 6mV for vented
appliances, and the safety magnet does
not hold, replace the valve.
(E) If closed circuit mV reading is the
same as the open circuit reading, the coil
is electrically open. Replace the valve.
Defective Safety
Magnet.(Millivolt
system)
Verify operation of safety magnet in the
following manner.
(A) Remove all wires from the terminals
TPTP and TP. If the voltage is above
110mV and the safety magnet does not
hold , replace the valve.
Pilot injector blocked. Replace injector with a new injector of
the exact size and type.
Pilot drops out Wrong pilot injector Replace the injector with a new injector
supplied specifically for the appliance
and gas type in question.
Oxypilot activated Examine flue system. Repair as
necessary.
No gas to main
burner with pilot
running.
Low gas pressure to
appliance.
Adjust inlet pressure with the main
burner running.(see diagram).
Control knob not in ON
position.
Rotate OFF/PILOT/ON control knob to
the ON position.
Thermostat/wall
switch will not
cycle main burner.
Thermostat not in ON
position.
Turn thermostat ON, and adjust
temperature control to call for heat.
Thermo-generator
output voltage not
within design
parameters.
Refer to item #7 in the set-up guide. If
unable to meet minimum requirements,
replace thermo-generator.
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