Pentair MiniMax Plus Service Manual page 29

Troubleshooting
If the pilot flame has been established but the main burners won't fire:
1. Check for voltage at the Red wire (MV) on the gas valve. If there is 24VAC present, the gas valve
should open allowing gas to flow to the main burners where the pilot will ignite the gas and you should
have combustion. If this does not happen the gas valve may be defective.
If these 3 checks prove positive and the burners still will not fire, replace the gas valve.
2. If the is "NO" voltage at the Red wire, at the gas valve, test for voltage at the #1 Terminal on Module (Red Wire).
If there is 24VAC present, the Wire Harness is defective.
If there is 0 volts, the Module is defective.
Rev. C 12-1-00
1 2 3 4 5 6
PILOT FLAME - WON'T FIRE
BEFORE REPLACING THE GAS VALVE:
A. Make sure gas supply valve is on.
B. Make sure gas valve knob is on.
C. Make sure the main burner orifices are clean.
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P/N 38033