1 flash per second - onga 4352,53,95,etcPressure switch open circuit - could also be motor, or motor
3 flashes per second - onga 4352,53, 95, etcElectronic fault - sensor (most common cause) or PCB
Green flashes - Spaquip Pulsar/2095 seriesWater sensor fault - lack of water
Red/Green alternate flashes Temperature sensor fault, open circuit, or high limit tripped - push Reset
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