If the compressor governor is set or sticks so that its cut-out pressure is higher than the safety valve's blow-off setting, what will happen?

1. The compressor will simply stop pumping earlier to protect the tanks
2. The safety valve will repeatedly blow off air, signalling a governor problem that must be repaired
3. The low air warning light will come on at 60 psi
4. The air dryer will stop purging moisture entirely