To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
WARNING
!
Troubleshooting
©2012 Viking Preferred Service
15
Switch contact
Signal
Voltage
Wire color code
P1
L1
120 VAC to
neutral
Black
P2
L2
120 VAC to
neutral
Red
P1 to P2
Line voltage
input
240 VAC
Black to Red
2
L1 when
thermostat
closes to
element
120 vac when
thermostat
closes to neutral
Yellow/Black
4
L2 when
thermostat
closes to
element
120 vac when
thermostat
closes to neutral
White/Black
4a
L2 when
thermostat
closes to
element
120 vac when
thermostat
closes to neutral
Red/Black
S2
L2 to Power
Light when
thermostat
closes
120 vac when
thermostat
closes to neutral
Red/White
Aux Switch 4
L2 when
thermostat
closes to
element
120 vac when
thermostat
closes to neutral
White/Black
Aux Switch 4b
L2 when
thermostat Aux
Switch closes to
element
120 vac when
thermostat Aux
Switch closes to
neutral
Blue/Black
Triple Infinite Switch Voltage Measurements
