I have a Honeywell aquastat that was set at 160 on the high and 170 on the low I believe the circulator is locked out how can I manually reset that

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Something is backwards here. Typically, HIGH limit should be 180 LOW limit 160 with 10-15 degree differential, depending on boiler size, load, etc. If it is digital and you don't have the instructions go to link below. If its the old dial type you should see 3 dials. one labeled HI, one LOW and one DIFF.
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