"The "guardian" doesn&
"The "guardian" doesn't tell you if the oil is actually getting to the motor, only if there is oil in the tank AND if the oil pump is getting power.
So you could have a situation where the oil pump fails completely, but if the tank is full and the connections are good, you don't get an alarm.
This has always bugged me that they never included a sensor to let you know if the oiler is actually pumping oil.
The 4 beeps would indicate "getting low" (along with the oil light if you have the smart gauge)in the "under the hood" oil tank and the steady alarm/safe mode (along with an oil light and check engine light) would mean the pump has lost electrical power.
The first thing I would check is the wiring to both the pump and the tank sensor - make sure a critter hasn't got under the hood and had a "munch" on the wires...."