Pentair Pool Products MiniMax NT Series Service Manual page 43

Troubleshooting
Pressure switch (water) .................................................................................................. 24 volts
High limit switch (outlet) .............................................................................................. 24 volts
High limit switch (inlet) ................................................................................................ 24 volts
Thermal fuse (fusible link) ............................................................................................ 24 volts
Gas valve ....................................................................................................................... 24 volts
Thermostat board ........................................................................................................... 24 volts
Transformer (secondary) ................................................................................................ 24 volts
Flame rectifier (signal sent back to module) ........................................ (7 micro amps) 24 volts
Hot surface igniter (only when heater firing) .............................................................. 120 volts
Reset switch .......................................................... (depends on input voltage) 120 or 240 volts
Fan motor .............................................................. (depends on input voltage) 120 or 240 volts
Troubleshooting
F1 – (Power output for fan circuit)
F2 – (white wire) 120 volts input – Fan circuit- when wired for 240vac
F2 – (white wire) Neutral when wired 120vac
24VAC – (orange wire marked 24 volts) – 24 volt supply to ignition module (this wire is hot
whenever the transformer is energized) - this is a direct lead
IND – (orange wire marked IND) – 24 volts from T-stat board when heater switch ON triggered
by the completion of the safety circuit.
Rev. B 2-11-04
PROPER COMPONENT VOLTAGES
FENWAL IGNITION
SEQUENCING MODULE
43
P/N NTSM03