Line 0 Flashcards
Which meter has a very high internal resistance
Voltmeter
If the leads of the ohm meter are connected across the contacts of a relay coil, the meter should read?
The resistance of the coil
Tested under load in the safety circuit the thermocouple should be replaced if the millivoltage drops below
8-10mv
If a pilotstat fails to produce sufficient magnetic field to hold the safety open with the 2-5 millivolts of applied voltage , we consider the coil
Providing normal operation
when using a power pile to power thermostat cunductor it must be located withen
under 60 ft
when responding to a no heat call
check for gas pressure and power at appliance not panel
to reset a furnace with remost reset ignition module that has gone into lockout by?
turn off thermostat for 30 seconds
120 volts across supposedly closed relay coil means
relay coil bad, open circuit
on a call for heat the spark egniter is energized and the pilot will stay lit for 30 seconds before the ignition module locks out
main gas valve is faulty
on call for service furnace runs for 3 minutes and shuts down, several minutes later repeats
Hitting high LIMIT!
Circulating blower is faulty not circulating air
responding to call for no heat
turbo blower is operating and pilot is lit but no burner is lit
main gas valve faulty
