"Short Cycling" is generally and indication of a flow problem. Locate the pressure switch, disconnect the two leads, jump them together and try again. If the heater stays on you either have a low pressure situation or the switch is bad. Do not continue to use the heater without correcting the problem.
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"Short Cycling" is generally and indication of a flow problem. Locate the pressure switch, disconnect the two leads, jump them together and try again. If the heater stays on you either have a low pressure situation or the switch is bad. Do not continue to use the heater without correcting the problem.